DSD-INT 2016 Keynote Lecture 2016: From global to local: the latest developme...Deltares
Keynote Lecture by Martin Verlaan, Delft University of Technology & Deltares, The Netherlands at the joint Delft3D User Days and the OpenDA User Day, during Delft Software Days 2016 on Tuesday, 1 November 2016, Delft.
DSD-INT 2015 - Application to bay of Cartagena de Indias (Colombia)-javier f....Deltares
This study analyzes the impact of dredging processes on turbidity in the Bay of Cartagena de Indias in Colombia. It models dredging scenarios using the Delft3D modeling system to analyze turbidity levels under different climate and seasonal conditions. The study finds that dredging increases turbidity in a localized area around the dredging zone, with concentrations depending on climate factors but generally below 0.2 kg/m3. Dredged material is dispersed in a very localized dump area with no impact on water quality in the bay. The dredging contributes less to turbidity than natural sediment flows from the Dique channel in some scenarios. The study provides information on turbidity levels and exceedance times to inform environmental management
DSD-INT 2017 Morphological river modelling in Ecuador, using Delft3D FM - BeckerDeltares
Presentation by Anke Becker, Deltares, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2015 - unique delft3 d applications in the usa- edwin eliasDeltares
Deltares is a Dutch research institute focused on water management. It has over 850 staff working on developing and applying expert knowledge to sustainable development of deltas, coasts, and rivers. Deltares has been collaborating with USGS to apply its modeling capabilities to coastal systems in the US, including the Columbia River, Puget Sound, and San Francisco Bay. Key areas of collaboration include understanding sediment processes, developing community models to assess climate change impacts, and applying models to inform management of dredging, flooding, and ecosystem restoration.
DSD-INT 2016 Keynote Lecture 2016: From global to local: the latest developme...Deltares
Keynote Lecture by Martin Verlaan, Delft University of Technology & Deltares, The Netherlands at the joint Delft3D User Days and the OpenDA User Day, during Delft Software Days 2016 on Tuesday, 1 November 2016, Delft.
DSD-INT 2015 - Application to bay of Cartagena de Indias (Colombia)-javier f....Deltares
This study analyzes the impact of dredging processes on turbidity in the Bay of Cartagena de Indias in Colombia. It models dredging scenarios using the Delft3D modeling system to analyze turbidity levels under different climate and seasonal conditions. The study finds that dredging increases turbidity in a localized area around the dredging zone, with concentrations depending on climate factors but generally below 0.2 kg/m3. Dredged material is dispersed in a very localized dump area with no impact on water quality in the bay. The dredging contributes less to turbidity than natural sediment flows from the Dique channel in some scenarios. The study provides information on turbidity levels and exceedance times to inform environmental management
DSD-INT 2017 Morphological river modelling in Ecuador, using Delft3D FM - BeckerDeltares
Presentation by Anke Becker, Deltares, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2015 - unique delft3 d applications in the usa- edwin eliasDeltares
Deltares is a Dutch research institute focused on water management. It has over 850 staff working on developing and applying expert knowledge to sustainable development of deltas, coasts, and rivers. Deltares has been collaborating with USGS to apply its modeling capabilities to coastal systems in the US, including the Columbia River, Puget Sound, and San Francisco Bay. Key areas of collaboration include understanding sediment processes, developing community models to assess climate change impacts, and applying models to inform management of dredging, flooding, and ecosystem restoration.
DSD-INT 2015 - Assessment using delft3 d of the impact of canal del dique - j...Deltares
The document discusses a coastal impact assessment of the Canal del Dique system in Colombia using the Delft3D modeling software. It summarizes key problems affecting the canal and coastal zone, including sedimentation, degradation of wetlands, and negative impacts on marine ecosystems from freshwater and sediment inflow. The study aims to assess potential environmental impacts of restoration measures in the canal and coastal zone. It details the model setup, calibration using measured tide, hydrodynamic and water quality data, and presents preliminary impact assessment results comparing sediment concentration, salinity and temperature under different alternatives.
DSD-INT 2017 Use of RIBASIM in Lesotho - PasschierDeltares
Presentation by Ron Passchier (Deltares) at the River Basin Planning and Modelling symposium, during Delft Software Days - Edition 2017. Wednesday, 25 October 2017, Delft.
DSD-INT 2018 Characterizing the drivers of coral reef hydrodynamics at the Ro...Deltares
Presentation by Camille Grimaldi, University of Western Australia, Australia, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2018 Floodplain Circulation Dynamics - van der SteegDeltares
Presentation by Shailesh van der Steeg, University of South Carolina, USA, at the Delft3D - User Days (Day 1: Hydrology and hydrodynamics), during Delft Software Days - Edition 2018. Monday, 12 November 2018, Delft.
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...Deltares
Presentation by Maarten Kleinhans, University of Utrecht, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2018 Fish migration River Afsluitdijk (FMR) - Hydrodynamic evaluation...Deltares
Presentation by Gijs van Banning, Arcadis, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2018 An Engineering Approach to construction of a Storm Surge Model f...Deltares
Presentation by Edwin Elias, Deltares USA, Inc., USA, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2017 Morphodynamic analysis of intervention scenarios at the Belgian ...Deltares
Presentation by Gerasimos Kolokythas (Flanders Hydraulics) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2015 - Effect of harbour siltation and dredged material releaseDeltares
1. The document discusses using the Delft3D modeling system to simulate the effects of harbor siltation and dredged material release on suspended sediment levels.
2. It describes different approaches to modeling mud dynamics, such as prescribing bed sediment availability or computing both bed sediment and suspended particulate matter.
3. The document also compares coupled models, where suspended sediment affects hydrodynamics, to uncoupled models for faster computation over longer timeframes.
DSD-INT 2017 Lake Kivu - Development of a 3D (500 z-layers) model to study st...Deltares
Presentation by Meinard Tiessen, Deltares, Netherlands, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2017 Coastal morphology change predictions during Hurricane Ike in Ga...Deltares
Presentation by Allison Penko, US Naval Research Laboratory, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2017 Keynote: towards using XBeach in the Dutch formal assessment of ...Deltares
This document discusses the use of the Xbeach model in the formal assessment of flood defences in the Netherlands in 2023. Currently, a 1D volume balance model called Duros+ is used, but it has limitations for certain coastal environments. Xbeach can potentially handle more complex situations like curved coastlines and structures. The challenges to using Xbeach include making it fully probabilistic, more user-friendly, continued validation, improving the wave envelope representation, and harmonizing hydraulic load calculations. Rijkswaterstaat aims to start work in 2018 to use Xbeach as the main dune erosion model by 2023, and the Ministry of Infrastructure will provide goals for the new assessment tools that year.
DSD-INT 2017 Infragravity Period Oscillations In A Channel Harbor Near A Rive...Deltares
Presentation by Florian Bellafont (Université Pau & Pays de l’Adour) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Washover processes at the Wadden Island of Schiermonnikoog, The ...Deltares
This document discusses a study that used field data and XBeach modeling to analyze washover processes on the Wadden Island of Schiermonnikoog in the Netherlands. The study used XBeach's 1D mode to model wave, tide, and storm surge conditions, and its 2D mode to model sediment transport under different washover geometries. The modeling showed that currents dominate sediment transport during inundation, which is influenced by the pressure gradient between water levels in the North Sea and Wadden Sea. The study also found that small, frequent inundation events are important for long-term sediment transport, and that sediment transport is sensitive to the dimensions of washover openings.
DSD-INT 2017 Delft3D FM - validation of hydrodynamics (1D,2D,3D) - van DamDeltares
Presentation by Arthur van Dam, Deltares, Netherlands, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2015 - The future of computer modeling of coastal wetland, estuarine,...Deltares
The document summarizes a modeling project to simulate coastal wetland, estuarine, and riverine systems in Louisiana. It involved a team effort between multiple organizations. The goal was to develop a validated model to simulate morphological processes during new delta and wetland creation, as well as nutrient effects on vegetation and primary producers. The modeling approach coupled hydrodynamic, morphodynamic, and nutrient dynamic modules. Nine production runs were planned using different scenarios of sediment diversion operations and environmental conditions over 50 years. Model calibration and validation showed good performance in simulating river hydrology and morphology change. The scenarios suggested that operating multiple sediment diversions could significantly build land compared to no diversions.
DSD-INT 2017 Vegetated Flow Simulation using Delft3D for a Large-scale Outdoo...Deltares
Presentation by Un Ji, Korea Institute of Civil Engineering and Building Technology (KICT), Korea, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2021 Sea Level Rise Modeling Considerations in Land Use PlanningDeltares
Presentation by Aaron Chung Hin Chow, Research Scientist at New York University of Abu Dhabi, at the Gulf Model Community User Day (Delft3D FM Suite, ...), during Delft Software Days - Edition 2021. Tuesday, 12 October 2021.
DSD-INT 2017 Modelling net-deposition of cohesive sediments within the ETM of...Deltares
This document describes a study that used a 3D numerical model to simulate net deposition of cohesive sediments in the estuarine turbidity maximum (ETM) zone of the Weser River estuary in Germany. The model was able to reproduce observed patterns of sediment concentration in the ETM and the approximate volume of sediment deposited annually, which is similar to the volume dredged for navigation. The model results indicate a stable long-term ETM that shifts seasonally depending on river discharge. Future work could improve the model by adding more sediment fractions, incorporating waves, allowing erosion of consolidated bed sediments, and making the model fully morphodynamic.
DSD-INT 2016 Mixing of a thermal plume in a highly stratified artificial urba...Deltares
This document summarizes research using 3D modeling to study mixing in a stratified urban pond with a thermal water inflow. The model simulated conditions over 7 days in winter. It reproduced the shape of the thermal plume, vertical temperature profiles measured at various depths, and low flow velocities measured near the shore. Different vertical deflector wall configurations were tested to improve water quality by enhancing circulation, but did not significantly influence conditions. A circulation system may be considered in future modeling to test its impact on mixing.
DSD-INT 2015 - Assessment using delft3 d of the impact of canal del dique - j...Deltares
The document discusses a coastal impact assessment of the Canal del Dique system in Colombia using the Delft3D modeling software. It summarizes key problems affecting the canal and coastal zone, including sedimentation, degradation of wetlands, and negative impacts on marine ecosystems from freshwater and sediment inflow. The study aims to assess potential environmental impacts of restoration measures in the canal and coastal zone. It details the model setup, calibration using measured tide, hydrodynamic and water quality data, and presents preliminary impact assessment results comparing sediment concentration, salinity and temperature under different alternatives.
DSD-INT 2017 Use of RIBASIM in Lesotho - PasschierDeltares
Presentation by Ron Passchier (Deltares) at the River Basin Planning and Modelling symposium, during Delft Software Days - Edition 2017. Wednesday, 25 October 2017, Delft.
DSD-INT 2018 Characterizing the drivers of coral reef hydrodynamics at the Ro...Deltares
Presentation by Camille Grimaldi, University of Western Australia, Australia, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2018 Floodplain Circulation Dynamics - van der SteegDeltares
Presentation by Shailesh van der Steeg, University of South Carolina, USA, at the Delft3D - User Days (Day 1: Hydrology and hydrodynamics), during Delft Software Days - Edition 2018. Monday, 12 November 2018, Delft.
DSD-INT 2017 Biogeomorphodynamics of rivers, estuaries and their floodplains ...Deltares
Presentation by Maarten Kleinhans, University of Utrecht, Netherlands, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2018 Fish migration River Afsluitdijk (FMR) - Hydrodynamic evaluation...Deltares
Presentation by Gijs van Banning, Arcadis, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2018 An Engineering Approach to construction of a Storm Surge Model f...Deltares
Presentation by Edwin Elias, Deltares USA, Inc., USA, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
DSD-INT 2017 Morphodynamic analysis of intervention scenarios at the Belgian ...Deltares
Presentation by Gerasimos Kolokythas (Flanders Hydraulics) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Wednesday, 1 November 2017, Delft.
DSD-INT 2015 - Effect of harbour siltation and dredged material releaseDeltares
1. The document discusses using the Delft3D modeling system to simulate the effects of harbor siltation and dredged material release on suspended sediment levels.
2. It describes different approaches to modeling mud dynamics, such as prescribing bed sediment availability or computing both bed sediment and suspended particulate matter.
3. The document also compares coupled models, where suspended sediment affects hydrodynamics, to uncoupled models for faster computation over longer timeframes.
DSD-INT 2017 Lake Kivu - Development of a 3D (500 z-layers) model to study st...Deltares
Presentation by Meinard Tiessen, Deltares, Netherlands, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2017 Coastal morphology change predictions during Hurricane Ike in Ga...Deltares
Presentation by Allison Penko, US Naval Research Laboratory, USA, at the Delft3D - User Days (Day 2: Sediment transport and morphology), during Delft Software Days - Edition 2017. Tuesday, 31 October 2017, Delft.
DSD-INT 2017 Keynote: towards using XBeach in the Dutch formal assessment of ...Deltares
This document discusses the use of the Xbeach model in the formal assessment of flood defences in the Netherlands in 2023. Currently, a 1D volume balance model called Duros+ is used, but it has limitations for certain coastal environments. Xbeach can potentially handle more complex situations like curved coastlines and structures. The challenges to using Xbeach include making it fully probabilistic, more user-friendly, continued validation, improving the wave envelope representation, and harmonizing hydraulic load calculations. Rijkswaterstaat aims to start work in 2018 to use Xbeach as the main dune erosion model by 2023, and the Ministry of Infrastructure will provide goals for the new assessment tools that year.
DSD-INT 2017 Infragravity Period Oscillations In A Channel Harbor Near A Rive...Deltares
Presentation by Florian Bellafont (Université Pau & Pays de l’Adour) at the XBeach X (10th Year Anniversary) Conference, during Delft Software Days - Edition 2017. Friday, 3 November 2017, Delft.
DSD-INT 2017 Washover processes at the Wadden Island of Schiermonnikoog, The ...Deltares
This document discusses a study that used field data and XBeach modeling to analyze washover processes on the Wadden Island of Schiermonnikoog in the Netherlands. The study used XBeach's 1D mode to model wave, tide, and storm surge conditions, and its 2D mode to model sediment transport under different washover geometries. The modeling showed that currents dominate sediment transport during inundation, which is influenced by the pressure gradient between water levels in the North Sea and Wadden Sea. The study also found that small, frequent inundation events are important for long-term sediment transport, and that sediment transport is sensitive to the dimensions of washover openings.
DSD-INT 2017 Delft3D FM - validation of hydrodynamics (1D,2D,3D) - van DamDeltares
Presentation by Arthur van Dam, Deltares, Netherlands, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2015 - The future of computer modeling of coastal wetland, estuarine,...Deltares
The document summarizes a modeling project to simulate coastal wetland, estuarine, and riverine systems in Louisiana. It involved a team effort between multiple organizations. The goal was to develop a validated model to simulate morphological processes during new delta and wetland creation, as well as nutrient effects on vegetation and primary producers. The modeling approach coupled hydrodynamic, morphodynamic, and nutrient dynamic modules. Nine production runs were planned using different scenarios of sediment diversion operations and environmental conditions over 50 years. Model calibration and validation showed good performance in simulating river hydrology and morphology change. The scenarios suggested that operating multiple sediment diversions could significantly build land compared to no diversions.
DSD-INT 2017 Vegetated Flow Simulation using Delft3D for a Large-scale Outdoo...Deltares
Presentation by Un Ji, Korea Institute of Civil Engineering and Building Technology (KICT), Korea, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days - Edition 2017. Monday, 30 October 2017, Delft.
DSD-INT 2021 Sea Level Rise Modeling Considerations in Land Use PlanningDeltares
Presentation by Aaron Chung Hin Chow, Research Scientist at New York University of Abu Dhabi, at the Gulf Model Community User Day (Delft3D FM Suite, ...), during Delft Software Days - Edition 2021. Tuesday, 12 October 2021.
DSD-INT 2017 Modelling net-deposition of cohesive sediments within the ETM of...Deltares
This document describes a study that used a 3D numerical model to simulate net deposition of cohesive sediments in the estuarine turbidity maximum (ETM) zone of the Weser River estuary in Germany. The model was able to reproduce observed patterns of sediment concentration in the ETM and the approximate volume of sediment deposited annually, which is similar to the volume dredged for navigation. The model results indicate a stable long-term ETM that shifts seasonally depending on river discharge. Future work could improve the model by adding more sediment fractions, incorporating waves, allowing erosion of consolidated bed sediments, and making the model fully morphodynamic.
DSD-INT 2016 Mixing of a thermal plume in a highly stratified artificial urba...Deltares
This document summarizes research using 3D modeling to study mixing in a stratified urban pond with a thermal water inflow. The model simulated conditions over 7 days in winter. It reproduced the shape of the thermal plume, vertical temperature profiles measured at various depths, and low flow velocities measured near the shore. Different vertical deflector wall configurations were tested to improve water quality by enhancing circulation, but did not significantly influence conditions. A circulation system may be considered in future modeling to test its impact on mixing.
DSD-INT 2016 Modeling invasive species in river systems_ interaction with nat...Deltares
Presentation by Mijke van Oorschot (University of Utrecht) at the Delft3D User Days, during Delft Software Days 2016. Wednesday 2 November 2016, Delft.
DSD-INT 2016 My Deltares - Compute As A Service Cloud computing and HPC - LeupeDeltares
Nerdalize builds a sustainable cloud platform by using excess computing power to heat homes, reducing energy costs. Its MyDeltares CaaS platform provides software users freedom of choice among multiple cloud providers while ensuring the best price and performance. It addresses common questions about testing compute jobs, accessing clouds, choosing providers, avoiding vendor lock-in, integrating on-premise servers, and managing costs. The platform allows deploying simulations on any cloud through a single interface and budgets project costs upfront so they are known before projects start.
DSD-INT 2016 Delft3D Flexible Mesh Suite 2017 in a nutshell - MelgerDeltares
The document provides an overview of the new Delft3D Flexible Mesh Suite 2017 software. It includes updates to the D-Flow Flexible Mesh engine for 1D, 2D, and 3D hydrodynamic modeling. It also includes updates to modules for real-time control, waves, water quality, and morphology. The document outlines the beta testing process and plans for additional development of new features. Support services are also described such as training courses, modeling services, and software code support.
DSD-INT 2015 - Recent application of Delft3D Flexible Mesh model to estuarine...Deltares
The document discusses recent applications of the DFlow-FM model to riverine environments by Technital S.p.A. It summarizes two case studies: modeling works on the lower stretch of the Tagliamento River in Italy to address hydraulic and environmental issues, and an ongoing study of the Padua-Venice waterway project to update the waterway and assess scenarios regarding flood management and freshwater inputs to the Venice Lagoon. DFlow-FM was used to model scenarios, evaluate interventions, and assess hydrodynamic and water quality impacts.
DSD-INT 2014 - Delft-FEWS Users Meeting - FEWS as a main component of BfG's f...Deltares
This document discusses the use of Delft-FEWS as the main component of the German Federal Institute of Hydrology's (BfG) forecasting services for German waterways. It describes how BfG has expanded its use of Delft-FEWS over time to cover more river basins and forecasting tasks, including water level forecasts, ice formation forecasts, and probabilistic water level forecasts. It also discusses how Delft-FEWS is used in BfG's research and development activities to improve forecasting methods and their transfer to operations.
IAHR 2015 - CFD simulations of a bubble screen, OMahoney, Deltares, 02072015Deltares
The document discusses simulations of bubble screens using computational fluid dynamics (CFD). It provides background on bubble screens and challenges modeling bubbles in CFD. It then describes the model setup using an Euler-Euler approach and RANS turbulence model. Lab scale simulations are presented validating the model against experimental data. Finally, preliminary field scale simulations are discussed along with plans for future work modeling bubble screens with salt water flow.
DSD-INT 2015 - from promise to practice - the lessons we needed to learn to m...Deltares
This document outlines 4 key lessons learned for making InSAR (Interferometric Synthetic Aperture Radar) successful for commercial applications. The lessons are: 1) thoroughly learn the client's business to identify opportunities for EO data, 2) use EO data as raw material for customized products rather than just selling the data, 3) treat pilot projects as relationship-builders by ensuring convincing results, and 4) find champions within the client organization who can help scale up use of the technology by supporting organizational changes. Examples of successful pilot projects and applications in oil & gas, infrastructure, and utilities are also provided.
DSD-INT 2016 Urban water modelling - MeijerDeltares
Presentation by Didrik Meijer, Deltares, The Netherlands, at the Delft3D - User Days (Day 1: Hydrodynamics), during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
Construction of Maasvlakte 2 began in 2009 and involved extracting 300 million cubic meters of sand from a borrow area 10 km offshore using a Trailing Suction Hopper Dredger. An environmental impact assessment was conducted and identified potential effects from increased turbidity caused by sand extraction such as reduced primary production, less growth of marine life, and insufficient food for protected bird species. Monitoring of silt concentrations was required every two weeks during construction at three cross sections, but a new "Model Supported Modelling of Suspended Matter" approach using remote sensing data and validation with in-situ measurements was proposed to the authorities and produced silt atlases from 2003-2011.
DSD-INT2016 Mathematical modeling of the influence of a navigable sea channel...Deltares
This document describes research on modeling the influence of a proposed navigable sea channel in the Gulf of Ob on the hydrodynamic and thermohaline regime of the Ob estuary. It discusses:
1) The selection of the Delft3D modeling system and model setup including grid resolution.
2) Collection and preparation of input meteorological, river discharge, and hydrological data from various sources to create databases.
3) Model verification against observational data from research expeditions from 1993, 2005, and 2010.
4) Predictive scenario modeling of intrusion of salinity into the Gulf of Ob under extreme low river discharge conditions both with and without the proposed navigable channel.
DSD-INT 2016 Calibration and scenario generation of hydrodynamics and water -...Deltares
Presentation by Fernando Aguilar Gómez (Instituto de Fisica de Cantabria) at the Delft3D User Days, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
DSD-INT 2015 - Photogrammetric workflows and use of UA VS, Francesco nex, E-s...Deltares
The document discusses the use of unmanned aerial vehicles (UAVs) for earth observation applications. It provides an overview of UAV classification systems and discusses photogrammetric workflows using UAV imagery. Common applications described include urban monitoring, environmental monitoring, agriculture/forestry, and archaeological documentation. Both pros and cons of UAVs for earth observation are presented, noting their flexibility but also technological and regulatory limitations.
DSD-INT 2016 Hydrodynamic modeling and resource-device suitability analysis o...Deltares
Presentation by Oliver Dan de Luna, University of the Philippines - Marine Science Institute, Philippines, at the Delft3D User Days during Delft Software Days 2016 on Tuesday, 1 November 2016, Delft.
This thesis investigates the chemistry, physics, and biology of salinity gradient solar ponds and how they influence pond clarity, stability, and efficiency. A solar pond is a relatively inexpensive solar energy collector and storage system. It works by trapping sunlight in a layer of highly saline water below a top layer that insulates and protects the heat. The thesis aims to share technical expertise with other researchers on maintaining pond clarity through controlling algae, bacteria, phosphates, and iron while removing suspended solids. It examines natural and chemical clarity maintenance methods and outlines the specific research objectives, questions, methodology, and anticipated outcomes of the study.
Salinity is caused by excess water seeping down to the water table and causing it to rise, which can be addressed through careful irrigation and land management practices. Gardeners can help fight salinity by mulching beds, choosing low-water plants, using efficient watering methods, reducing lawn areas, and establishing more perennials to limit watering needs and runoff that contributes to rising water tables.
The document discusses osmotic power, a sustainable energy source that uses differences in salt concentrations between freshwater and saltwater to generate electricity. It notes that Norway built the first osmotic power plant, which is 13 times more efficient than current sustainable options and produces energy through an osmotic process that involves freshwater and saltwater at different salt concentrations and pressures, generating 1.62 megawatts of power emission-free. However, the technology also has high costs and requires frequent filter changes and emptying/refilling of containers.
The document discusses modeling of seawater intrusion in coastal aquifers. It provides background on seawater intrusion as a natural process driven by density differences between fresh and saltwater. It describes various numerical models that can be used to simulate variable density groundwater flow and solute transport, including SEAWAT, SUTRA and MODFLOW. As an example application, it summarizes a study that used SUTRA to model seawater intrusion and the influence of tides on the fresh water resources of Nauru Island. The study found tidal forcing significantly reduced the size of the freshwater lens.
The document summarizes several projects related to sea level rise adaptation for the Ports of San Francisco and Oakland. It discusses analyzing vulnerable areas to coastal inundation under scenarios of 15 inches and 55 inches of sea level rise by 2050 and 2100, respectively. It also describes raising levees at the Port of Oakland and identifying existing and future flood risks at the Port of San Francisco. The document provides tables showing increased water levels and decreased return periods under climate change scenarios, highlighting the need to consider both sea level rise and climate change impacts in planning.
The document summarizes current groundwater investigations at Texas A&M University-Corpus Christi. It examines precipitation, streamflow, and groundwater patterns in relation to climate indicators like ENSO. Methods like geophysics, geochemistry, and isotopic analysis are used to study groundwater discharge to estuaries and the Nueces River. Thermal profilers and time-lapse resistivity help analyze groundwater-surface water interaction. Stable isotopes and methane signatures help distinguish natural from anthropogenic methane sources and recharge sources. The long-term goal is developing a better understanding of regional groundwater and its relationship to climate, surface water, and other factors.
Numerical modeling in support of the characterization and remediation of impacted sediments can be a challenging task, particularly in environments where multiple physical processes influence sediment fate and transport. The interaction of various controls is particularly complex in estuarine settings, where riverine input, water levels, waves, and other coastal processes combine to create a seasonally dynamic environment. Modeling of such environments requires a comprehensive and integrated approach such that the effects of each process can be assessed individually, as these processes can be allowed to interact to reproduce the natural environment as faithfully as possible
Approach and Activities
This contribution describes the development and calibration of an integrated Delft3D numerical model that includes flow, sediment transport, wave processes, and vegetation. The model boundary conditions are based on data collected during a comprehensive field program. Field data were also used to calibrate various model input parameters (such as bed and vegetation roughness). The model was used to understand erosion and deposition during both low and high flow regimes, and thus to aid in understanding important controls on sedimentary dynamics during these predominant regimes.
Results and Lessons Learned
The integrated numerical model predictions capture important sedimentation, erosion, velocity, and water level patterns. Model predictions indicate that during periods of low riverine input, velocity patterns and sediment transport associated with periodic water level changes dominate. During riverine flood conditions flow and sedimentation patterns are controlled by the river itself. Integrated modeling of this setting, including calibration to field data provides a valuable tool for assessment of future conditions, and thus for remediating impacted sediments.
This document provides an overview of the central Texas hydrogeology and Edwards Aquifer. It discusses that the aquifer is important for supplying drinking water to over 4 million people in the region but faces sustainability challenges from population growth, urbanization, and climate change intensifying drought conditions. The aquifer has unique karst geology that allows both conduit and matrix groundwater flow, making it vulnerable to surface contamination from urban runoff. Management requires understanding the aquifer's structure and flow paths through mapping techniques like dye tracing to protect this critical water source.
Presentation given by Joe Harrington, Cork Institute of Technology,at the workshop on Sediment Fluxes in Irish Rivers (Siltflux Workshop) = 28/10/14, UCD, Dublin 4
DSD-INT 2015 - The future of computer modeling of coastal wetland - maselheDeltares
The document summarizes the modeling approach and results of a team effort to develop an integrated modeling system for coastal Louisiana. The team used several models linked together to simulate hydrodynamics, morphodynamics, nutrient dynamics, and vegetation changes over long time periods. Validation showed the models reasonably represented water levels, salinity, sediment changes and more. Production runs examined scenarios with and without sediment diversions. The diversions led to increased land building and changes in water quality and vegetation over 50 years. The modeling effort aimed to improve understanding of coastal processes and inform restoration planning.
Streams shape the landscape through erosion and sediment transport processes. Younger streams in mountainous areas exhibit steep gradients and carve narrow V-shaped valleys through rapid erosion. Mature streams in lowland areas have gentler slopes and meander across broad floodplains, eroding the banks and depositing sediment in point bars. As streams near their mouths, they deposit large deltas and distribute sediment across coastal plains.
This document discusses surface water systems such as rivers and streams. It covers the hydrologic cycle and how streams function to remove excess surface water from continents through erosion and sediment transport. As streams evolve from young to mature, they shift from being predominantly erosional to depositional, carving landscapes and depositing new geologic formations. Key characteristics and features of streams are summarized, including drainage patterns, longitudinal profiles, and how streams are affected by changes in base level.
The document summarizes a water quality modeling project for the Lower Cape Fear River estuary. It describes:
1) The water quality model used inputs like river flows, temperatures, and point source loads to simulate dissolved oxygen, nutrients, and organic matter.
2) The model was calibrated for 2004 using monitoring data and verified against 2005 data, with good agreement found for salinity, temperature, dissolved oxygen and other constituents.
3) The partitioning of organic matter into labile and refractory components improved the model's ability to simulate long-term biochemical oxygen demand measurements in the estuary.
This document discusses various subsurface mapping techniques used in seismic interpretation, including:
- Seismic picking, fault interpretation, contouring, time structure mapping, velocity modeling, and depth conversion to analyze seismic data.
- Tools for basic seismic mapping including workstations to access large volumes of 2D and 3D seismic data.
- Methods for well tie, structural interpretation, 3D visualization, and attribute analysis of seismic volumes.
- Creating structure contour maps, depth structure maps, and 3D structural models from seismic horizon picks and velocity modeling.
- Using attributes like coherency to enhance fault and feature imaging at the limit of seismic resolution.
- Analyzing sequences, unconformities,
This document provides information about well hydraulic flow and radial flow analysis from pumping tests. It discusses key concepts like unsteady and steady state flow, assumptions of the radial flow model, and analytical solutions for confined and unconfined aquifers. Methods like Theis and Jacob are presented to analyze pumping test data to determine aquifer properties like transmissivity and storativity. Examples are given to demonstrate how these methods are applied. References on groundwater hydrology and related topics are also provided.
This document summarizes challenges and opportunities for sustainable water supply in Swedish coastal areas given climate change impacts and population concentration. It notes increasing water stress, more extreme weather like drought, and rising seas. Models project higher temperatures, precipitation changes, and more drought days by 2100. Groundwater resources are limited along the coast. The document discusses using subsurface dams to increase storage and challenges like water quality impacts from sewage infiltration. It provides examples assessing nitrate and radon pollution risks. Future research needs include better characterizing aquifers and groundwater with limited data. Developing robust assessment methods is important for local and regional planning.
PetroTeach Free Webinar by Dr. Andrew Ross on Seismic Reservoir CharacterizationPetro Teach
A reliable reservoir model is an invaluable tool for risk reduction. I will give an overview of seismic reservoir characterization and the quantitative interpretation workflow including the use of pre and post stack seismic attributes and inversion outputs for mapping reservoir properties and integration of the attribute output with petrophysical data to create quantitative reservoir models.
Similar to DSD-INT 2016 Salinity and Sediment dynamics in San Francisco Estuary - Elmilady (20)
DSD-INT 2023 Hydrology User Days - Intro - Day 3 - KroonDeltares
Presentation by Timo Kroon and Nadine Slootjes (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
Presentation by Sabrina Couvin Rodriguez (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Umit Taner (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Daan Rooze (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Approaches for assessing multi-hazard risk - WardDeltares
Presentation by Philip Ward (Deltares and IVM VU Amsterdam) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
Presentation by Andrew Warren (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Global hydrological modelling to support worldwide water assessm...Deltares
Presentation by Marc Bierkens (Utrecht University and Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Modelling implications - IPCC Working Group II - From AR6 to AR7...Deltares
Presentation by Bart van den Hurk (WGII Co-Chair, IPCC AR7, Deltares) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Knowledge and tools for Climate Adaptation - JeukenDeltares
Presentation by Ad Jeuken (Deltares, Netherlands) at the Climate Adaptation Symposium 2023, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Coupling RIBASIM to a MODFLOW groundwater model - BootsmaDeltares
Presentation by Huite Bootsma (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Create your own MODFLOW 6 sub-variant - MullerDeltares
Presentation by Mike Muller (hydrocomputing GmbH & Co. KG, Germany) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Example of unstructured MODFLOW 6 modelling in California - RomeroDeltares
Presentation by Betsy Romero Verástegui (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Challenges and developments in groundwater modeling - BakkerDeltares
Presentation by Mark Bakker (Delft University of Technology, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Demo new features iMOD Suite - van EngelenDeltares
Presentation by Joeri van Engelen (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 iMOD and new developments - DavidsDeltares
Presentation by Tess Davids (Deltares, Netherlands) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
Presentation by Christian Langevin (U.S. Geological Survey (USGS), USA) at the Hydrology Suite User Days (Day 3) - Groundwater modelling, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Thursday, 30 November 2023, Delft.
DSD-INT 2023 Hydrology User Days - Presentations - Day 2Deltares
Presentation by several speakers at the Hydrology Suite User Days (Day 2) - wflow and HydroMT, during the Delft Software Days - Edition 2023 (DSD-INT 2023). Wednesday, 29 November 2023, Delft.
DSD-INT 2023 Needs related to user interfaces - SnippenDeltares
Presentation by Edwin Snippen (Deltares, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
DSD-INT 2023 Coupling RIBASIM to a MODFLOW groundwater model - BootsmaDeltares
Presentation by Huite Bootsma (Deltares, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
DSD-INT 2023 Parameterization of a RIBASIM model and the network lumping appr...Deltares
Presentation by Harm Nomden (SWECO, Netherlands) at the Hydrology Suite User Days (Day 1) - Hydrology Suite introduction and River Basin Management software (RIBASIM), during the Delft Software Days - Edition 2023 (DSD-INT 2023). Tuesday, 28 November 2023, Delft.
E-commerce Application Development Company.pdfHornet Dynamics
Your business can reach new heights with our assistance as we design solutions that are specifically appropriate for your goals and vision. Our eCommerce application solutions can digitally coordinate all retail operations processes to meet the demands of the marketplace while maintaining business continuity.
Microservice Teams - How the cloud changes the way we workSven Peters
A lot of technical challenges and complexity come with building a cloud-native and distributed architecture. The way we develop backend software has fundamentally changed in the last ten years. Managing a microservices architecture demands a lot of us to ensure observability and operational resiliency. But did you also change the way you run your development teams?
Sven will talk about Atlassian’s journey from a monolith to a multi-tenanted architecture and how it affected the way the engineering teams work. You will learn how we shifted to service ownership, moved to more autonomous teams (and its challenges), and established platform and enablement teams.
May Marketo Masterclass, London MUG May 22 2024.pdfAdele Miller
Can't make Adobe Summit in Vegas? No sweat because the EMEA Marketo Engage Champions are coming to London to share their Summit sessions, insights and more!
This is a MUG with a twist you don't want to miss.
E-commerce Development Services- Hornet DynamicsHornet Dynamics
For any business hoping to succeed in the digital age, having a strong online presence is crucial. We offer Ecommerce Development Services that are customized according to your business requirements and client preferences, enabling you to create a dynamic, safe, and user-friendly online store.
Why Mobile App Regression Testing is Critical for Sustained Success_ A Detail...kalichargn70th171
A dynamic process unfolds in the intricate realm of software development, dedicated to crafting and sustaining products that effortlessly address user needs. Amidst vital stages like market analysis and requirement assessments, the heart of software development lies in the meticulous creation and upkeep of source code. Code alterations are inherent, challenging code quality, particularly under stringent deadlines.
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-fusion-buddy-review
AI Fusion Buddy Review: Key Features
✅Create Stunning AI App Suite Fully Powered By Google's Latest AI technology, Gemini
✅Use Gemini to Build high-converting Converting Sales Video Scripts, ad copies, Trending Articles, blogs, etc.100% unique!
✅Create Ultra-HD graphics with a single keyword or phrase that commands 10x eyeballs!
✅Fully automated AI articles bulk generation!
✅Auto-post or schedule stunning AI content across all your accounts at once—WordPress, Facebook, LinkedIn, Blogger, and more.
✅With one keyword or URL, generate complete websites, landing pages, and more…
✅Automatically create & sell AI content, graphics, websites, landing pages, & all that gets you paid non-stop 24*7.
✅Pre-built High-Converting 100+ website Templates and 2000+ graphic templates logos, banners, and thumbnail images in Trending Niches.
✅Say goodbye to wasting time logging into multiple Chat GPT & AI Apps once & for all!
✅Save over $5000 per year and kick out dependency on third parties completely!
✅Brand New App: Not available anywhere else!
✅ Beginner-friendly!
✅ZERO upfront cost or any extra expenses
✅Risk-Free: 30-Day Money-Back Guarantee!
✅Commercial License included!
See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIFusionBuddyReview,
#AIFusionBuddyFeatures,
#AIFusionBuddyPricing,
#AIFusionBuddyProsandCons,
#AIFusionBuddyTutorial,
#AIFusionBuddyUserExperience
#AIFusionBuddyforBeginners,
#AIFusionBuddyBenefits,
#AIFusionBuddyComparison,
#AIFusionBuddyInstallation,
#AIFusionBuddyRefundPolicy,
#AIFusionBuddyDemo,
#AIFusionBuddyMaintenanceFees,
#AIFusionBuddyNewbieFriendly,
#WhatIsAIFusionBuddy?,
#HowDoesAIFusionBuddyWorks
Graspan: A Big Data System for Big Code AnalysisAftab Hussain
We built a disk-based parallel graph system, Graspan, that uses a novel edge-pair centric computation model to compute dynamic transitive closures on very large program graphs.
We implement context-sensitive pointer/alias and dataflow analyses on Graspan. An evaluation of these analyses on large codebases such as Linux shows that their Graspan implementations scale to millions of lines of code and are much simpler than their original implementations.
These analyses were used to augment the existing checkers; these augmented checkers found 132 new NULL pointer bugs and 1308 unnecessary NULL tests in Linux 4.4.0-rc5, PostgreSQL 8.3.9, and Apache httpd 2.2.18.
- Accepted in ASPLOS ‘17, Xi’an, China.
- Featured in the tutorial, Systemized Program Analyses: A Big Data Perspective on Static Analysis Scalability, ASPLOS ‘17.
- Invited for presentation at SoCal PLS ‘16.
- Invited for poster presentation at PLDI SRC ‘16.
Artificia Intellicence and XPath Extension FunctionsOctavian Nadolu
The purpose of this presentation is to provide an overview of how you can use AI from XSLT, XQuery, Schematron, or XML Refactoring operations, the potential benefits of using AI, and some of the challenges we face.
Revolutionizing Visual Effects Mastering AI Face Swaps.pdfUndress Baby
The quest for the best AI face swap solution is marked by an amalgamation of technological prowess and artistic finesse, where cutting-edge algorithms seamlessly replace faces in images or videos with striking realism. Leveraging advanced deep learning techniques, the best AI face swap tools meticulously analyze facial features, lighting conditions, and expressions to execute flawless transformations, ensuring natural-looking results that blur the line between reality and illusion, captivating users with their ingenuity and sophistication.
Web:- https://undressbaby.com/
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...Crescat
Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
Crescat Event for concert promoters and event agencies. Crescat Venue for music venues, conference centers, wedding venues, concert halls and more. And Crescat Festival for festivals, conferences and complex events.
With a wide range of popular features such as event scheduling, shift management, volunteer and crew coordination, artist booking and much more, Crescat is designed for customisation and ease-of-use.
Over 125,000 events have been planned in Crescat and with hundreds of customers of all shapes and sizes, from boutique event agencies through to international concert promoters, Crescat is rigged for success. What's more, we highly value feedback from our users and we are constantly improving our software with updates, new features and improvements.
If you plan events, run a venue or produce festivals and you're looking for ways to make your life easier, then we have a solution for you. Try our software for free or schedule a no-obligation demo with one of our product specialists today at crescat.io
SOCRadar's Aviation Industry Q1 Incident Report is out now!
The aviation industry has always been a prime target for cybercriminals due to its critical infrastructure and high stakes. In the first quarter of 2024, the sector faced an alarming surge in cybersecurity threats, revealing its vulnerabilities and the relentless sophistication of cyber attackers.
SOCRadar’s Aviation Industry, Quarterly Incident Report, provides an in-depth analysis of these threats, detected and examined through our extensive monitoring of hacker forums, Telegram channels, and dark web platforms.
2. Master of Science Thesis
By
Hesham M. Elmilady
UNESCO-IHE, Department of Water Science and Engineering
Coastal Engineering and Port Development
Supervisors
Prof.dr.ir. Dano Roelvink (UNESCO-IHE & Deltares)
Dr. Thijs van Kessel (Deltares)
Mentor
Dr. Mick van der Wegen (UNESCO-IHE & Deltares)
Examination Committee
Prof.dr.ir. Dano Roelvink
Dr. Thijs van Kessel
Dr. Mick van der Wegen
2nd November 2016
Salinity and Sediment Dynamics in San Francisco Estuary
3. 1. Introduction
San Francisco Estuary
Problem Definition and Research Question
2. Numerical Model
Model Domain
Forcing Conditions
3. Calibration
Salinity Calibration
Hydrodynamic Calibration
Temperature Calibration
Suspended Sediment Concentration Calibration
4. Discussions and Analysis
Residual Flows
Tracers
Interannual Variability
Sediment Budget
5. Conclusions and Recommendations
Presentation Contents
4. 1. Introduction
San Francisco Estuary
San Francisco Estuary (Google Earth)
• The largest estuary on the west coast
of the U.S.
• Its enormous watershed drains
approximately 40% of California’s
area (Kimmerer 2004).
• Only link to the Pacific Ocean is
through the Golden Gate Bridge.
• Commonly referred to as the Bay-
Delta system which includes the
Sacramento-San Joaquin Delta and
the San Francisco Bay.
• 3 main Sub-embayments:
- South Bay
- Central Bay
- North Bay
Pacific Ocean
Golden Gate
Sacramento-San Joaquin Delta
South Bay
Central Bay
Northern Bay
Map Area
5. 1. Introduction
Northern San Francisco Bay
Northern San Francisco Bay (Google Earth)
• The Northern San Francisco Bay
comprises:
1) San Pablo Bay
2) Suisun Bay
3) Carquinez Strait
• Carquinez Strait is the only
connection between San Pablo and
Suisun Bay
San Pablo Bay
Suisun Bay
Carquinez Strait
6. 1. Introduction
Northern San Francisco Bay Bathymetry
1) San Pablo Bay:
• Northern and Southern shoals dissected
by a deep shipping channel
• Connected to the Central Bay through
San Pablo Strait.
2) Carquinez Strait:
• Narrow cross-section (1000 m)
• Deep Nature (max ~35 m)
• Steep Slopes
• Complicated Geometry (Multiple Bends)
• Rocky banks
3) Suisun Bay:
• Shoals dissected by two deep channels
(Northern and Southern Channel)
• Connected to the delta through a narrow
cross section at Point Mallard
Northern San Francisco Bay
San Pablo Bay
Suisun Bay
Carquinez Strait
Delta
Southern Channel
Northern Channel
Sacramento River
San Joaquin River
7. 1. Introduction
Problem Definition
San Pablo Bay
Suisun BayCarquinez Strait
Delta
Saline Water
Fresh Water
Cross-Section
• Density Currents (Longitudinal Salinity Gradient)
9. 1. Introduction
Research Question
San Pablo Bay Suisun BayCarquinez Strait
• Salinity Stratification
How does the gravitational circulation and salinity stratification affect the
sediment exchange between San Pablo and Suisun Bay?
10. 1. Introduction
San Francisco Estuary
Problem Definition and Research Question
2. Numerical Model
Model Domain
Forcing Conditions
3. Calibration
Salinity Calibration
Hydrodynamic Calibration
Temperature Calibration
Suspended Sediment Concentration Calibration
4. Discussions and Analysis
Residual Flows
Tracers
Interannual Variability
Sediment Budget
5. Conclusions and Recommendations
Presentation Contents
11. 2. Numerical Model
Model Domain
• 3D process based numerical
model developed with the
Delft3D software.
• Curvilinear structured mesh
with variable grid resolution.
• Covers the entire Northern
San Francisco Bay and a
section of the delta with its
two main river branches.
• Vertical layering
- 15 sigma layers
- Z-layers (1m resolution)
• Online coupling of the flow
model with wave model
(SWAN).
The geographical coverage of the Model Domain (Google Earth)
Suisun Bay
Sacramento River
San Joaquin River
Napa River
Delta
12. 2. Numerical Model
Boundary Data
Richmond:
• Water Levels
• Temperature
• Salinity
Napa:
• Discharge
• Temperature
• SSC
Rio Vista:
• Discharge
• Temperature
• SSC
Jersey:
• Discharge
• Temperature
• SSC
Wind Field
Model Domain and Boundary Definition (Google Earth)
Legend:
• (Field Measurements)
• (Correlations developed
with measurements
form different Water
Years)
• (Data obtained from
Numerical Models)
13. 2. Numerical Model
Richmond:
• Water Levels
• Temperature
• Salinity
Napa:
• Discharge
• Temperature
• SSC
Rio Vista:
• Discharge
• Temperature
• SSC
Jersey:
• Discharge
• Temperature
• SSC
Wind Field
Model Domain and Boundary Definition (Google Earth)
Forcing Conditions
1) Tidal Forcing represented
by the water levels
specified at Richmond
Boundary.
2) Fresh water input
represented by the river
discharge at Napa, Rio-
Vista and Jersey.
3) Wind represented by the
spatially and temporally
varying wind field across
the model domain.
14. 1. Introduction
San Francisco Estuary
Problem Definition and Research Question
2. Numerical Model
Model Domain
Forcing Conditions
3. Calibration
Salinity Calibration
Hydrodynamic Calibration
Temperature Calibration
Suspended Sediment Concentration Calibration
4. Discussions and Analysis
Residual Flows
Tracers
Interannual Variability
Sediment Budget
5. Conclusions and Recommendations
Presentation Contents
15. 3. Calibration
Monitoring Stations (Field Measurements)
Monitoring Stations in Northern San Francisco Bay (Google Earth)
• Data from WY 2004
• Eight monitoring stations spread
along the Northern San Francisco
Bay (USGS & NOAA)
• Six stations has two sensors
(Upper and Lower sensor) that
provides an instantaneous (15-
minute interval) time series of:
1) Salinity
2) Temperature
3) Suspended Sediment
Concentration (SSC)
20. 3. Calibration
Temperature Calibration
• The model was subjected to water temperature
calibration using data from 6 monitoring stations.
• Water temperature has a small contribution to the
water density and it is included in the UNESCO
formulation for the water density computations in the
Delft3D.
• The results of the temperature calibration showed
good model performance in predicting the temperature
field.
21. 3. Calibration
SSC Calibration
Sediment Fraction τcr,e (Pa) M (kg m-2 s-1) ws (mm s-1) D50 (µm)
Silt 0.1 2.5×10-5 0.1
Flocculated clay and silt (Flocs) 0.2 5×10-5
1.5
Sand 400
Flocs
Silt
• Three sediment fractions was applied over the model domain
Sand
• Initial bed composition generated using the methodology defined
in van der Wegen et al. (2010).
Sediment Fractions
22. 3. Calibration
SSC Calibration
• SSC calibration results shows a good performance in predicting the SSC field.
• The results at the upper sensors are better than that for the lower sensor which is mainly attributed to the freshly
deposited sediment layer and the use of the sigma layers (Artificial Mixing).
Carquinez Benicia
23. 1. Introduction
San Francisco Estuary
Problem Definition and Research Question
2. Numerical Model
Model Domain
Forcing Conditions
3. Calibration
Salinity Calibration
Hydrodynamic Calibration
Temperature Calibration
Suspended Sediment Concentration Calibration
4. Discussions and Analysis
Residual Flows
Tracers
Interannual Variability
Sediment Budget
5. Conclusions and Recommendations
Presentation Contents
24. 4. Discussions and Analysis
San Pablo Bay Suisun Bay
Carquinez Cross-Section
Residual Flows
25. San Pablo Bay Suisun Bay
NoSalinityWithSalinity
Tides
Gravitational
Circulation
Tides
Flood Tide
Arrows to Scale
Landward Bottom Flow
Logarithmic Profile
4. Discussions and Analysis
Residual Flows
River Discharge
River Discharge
26. San Pablo Bay Suisun Bay
NoSalinityWithSalinity
River Discharge
& TidesGravitational
Circulation
Residual Flows Ebb Tide
Arrows to Scale
Seaward Near Surface Flow
Logarithmic Profile
SIPS (Strain-induced periodic stratification) Mechanism
4. Discussions and Analysis
River Discharge
& Tides
27. 4. Discussion
NoSalinityWithSalinity
Residual Flows
Flood Tide Ebb Tide
+ =
+ =
Tidal Cycle
Residual Flow
• Seaward near surface
residual flow.
• Landward bottom
residual flow.
• Seaward residual flow
over the entire water
column
4. Discussions and Analysis
28. 4. Discussion
Tracers (Tidal Cycle)
4. Discussions and Analysis
Time Step= 30 min
WithSalinityNoSalinity
San Pablo Bay Suisun Bay
30. 4. Discussion
Residual Flows
Salinity (psu)
4. Discussions and Analysis
San Pablo Strait San Pablo Bay Carquinez Strait Suisun Bay
SSC San Pablo Bay Sediment
SSC Boundary Sediment
33. Interannual Variability
4. Discussion
Total Cum. Suspended transport through BEN
25-Dec-2003 01-May-2004
Dry Wet Dry
760 Kt86 days 126 days 153 days
All Fractions
• Water year 2004 is a wet WY is divided to:
65% Dry season
35% Wet season
• Without Salinity, Suisun Bay exports
sediment during the whole WY.
• With Salinity, Suisun Bay:
Dry Season: Equilibrium or Import
Wet Season: Export
• The total difference between both
simulations is 760 Kt, divided:
80% Dry season
20% Wet season
• The effect of the gravitational circulation
and salinity stratification is more
pronounced in the dry season than that for
the wet season.
4. Discussions and Analysis
A
Import
Export
34. Interannual Variability
4. Discussion
San Pablo Bay sediment
• San Pablo Bay sediment is imported
to Suisun Bay for both cases during
all of the WY except for a very short
period that corresponds to the highest
peak discharges.
San Pablo FlocsSan Pablo Silt
4. Discussions and Analysis
• The system quickly recovers from the
effect of the peak river discharge and
turns to import after a short period.
• The rate of sediment import from San
Pablo Bay to Suisun Bay decreases
during the wet season.
• The effect of the gravitational
circulation and salinity stratification is
more pronounced for San Pablo Bay
Silt than that for the Flocs.
Export Export≈66 %
≈30 %
35. Available Mass (kg/m2) 01-Oct-2003 00:00Available Mass (kg/m2) 01-Oct-2003 00:00
San Pablo Bay Sediment
No Salinity With Salinity
4. Discussion
Start of Simulation
Only Shoals Shoals and Deep Channel
Interannual Variability
4. Discussions and Analysis
Bathymetry
36. Available Mass (kg/m2) 25-Dec-2003 00:00Available Mass (kg/m2) 25-Dec-2003 00:00
No Salinity With Salinity
4. Discussion
Bathymetry
End of First Dry Period
Only Shoals Shoals and Deep Channel
Interannual Variability
4. Discussions and Analysis
San Pablo Bay Sediment
38. Sediment Budget (WY 2004)
4. Discussion
BEN
MALCAR
BEN
MALCAR
BEN
MALCAR
• Suisun Bay is depositional during WY 2004.
• Wet season (Erosional):
Import from the delta
Export to Carquinez Strait and San Pablo Bay
• Dry season (Depositional):
Import from the delta, Carquinez Strait and San Pablo Bay
4. Discussions and Analysis
39. 4. Discussion
BEN
MALCAR
BEN
MALCAR
• The sediment import at the model boundaries is approximately the same for both cases (with and without salinity).
• The effect of the gravitational circulation and salinity stratification starts at Mallard and increases when going seaward.
• Suisun Bay turns from being depositional ( 20 Kt ) to erosional ( 680 kt).
• Gravitational circulation and salinity stratification not only imports sediment to Suisun Bay during the dry season but also
decreases the seaward sediment export from Suisun Bay during the wet season.
Sediment Budget (WY 2004)
4. Discussions and Analysis
(With Salinity)
40. 1. Introduction
San Francisco Estuary
Problem Definition and Research Question
2. Numerical Model
Model Domain
Forcing Conditions
3. Calibration
Salinity Calibration
Hydrodynamic Calibration
Temperature Calibration
Suspended Sediment Concentration Calibration
4. Discussions and Analysis
Residual Flows
Tracers
Interannual Variability
Sediment Budget
5. Conclusions and Recommendations
Presentation Contents
41. • A 3D modelling approach is critical for the Northern Bay as the 3D process related to the density currents
and salinity stratification has a significant effect on the sediment dynamics during the whole water year.
• The gravitational circulation and salinity stratification alters the flow patterns through Carquinez Strait:
During the dry season: During the wet season:
- Seaward near surface residual flow - Seaward residual flow over the entire water
- Landward bottom residual flow. column
• The salinity stratification and gravitational circulation is responsible for both:
A) Importing sediment to Suisun Bay during the dry season.
B) Decreasing the sediment export from Suisun Bay during the wet season.
• The effect of the gravitational circulation and salinity stratification in Carquinez Strait is more pronounced:
A) During the dry season than that for the wet season.
B) For the finest cohesive sediment (Silt) than that for coarser cohesive sediment (Flocs).
5. Conclusions and Recommendations
Conclusions
42. • Suisun Bay is deposition during WY 2004:
A) Depositional during the dry period
B) Erosional during the wet period
• The sediment exchange between San Pablo and Suisun Bay can occur through either:
- Deep Channel (Gravitational Circulation and Salinity Stratification)
- Relatively shallow areas (Hydrodynamic conditions – Tidal and Riverine Forcing)
5. Conclusions and Recommendations
Conclusions
43. • Distinguishing between the effect of the gravitational circulation and salinity stratification by
evaluating the longitudinal salinity gradient and using the horizontal Richardson number
(Monismith et al. 1996; Stacey et al. 2001).
• Distinguishing between the advective, dispersive and stokes drift flux.
• Applying the use of the Delft 3D flexible mesh to capture the system’s complicated geometry.
• The application of the fluffy layers (van Kessel et al. 2010 ) to simulate the effect of the freshly
deposited sediment layer.
• Studying the effect of the wind generated waves on the sediment transport.
• Assessing the effect of the seal-level rise on the Northern Bay.
Recommendations and Future Work
5. Conclusions and Recommendations
To be Considered for investigation
Currently under investigation