This document summarizes recent coupled field observation and modeling work in Thai seas conducted by Dr. Tanuspong Pokavanich. It describes the setup and validation of a 3D hydrodynamic model of the Gulf of Thailand, including modeling of currents, water properties, and larval transport. Field observations of water level, temperature, salinity and currents were used to validate model results. The modeling aims to improve understanding of hydrodynamic processes and inform management of issues like water quality and fisheries in the Gulf of Thailand.
Retrospective Analysis of Antarctic Tracking DataAlison Specht
Prof. Mark Hindell from the University of Tasmania and a member of the SCAR-RAATD group of CESAB gave this talk at the 6th International Biologging conference in Germany in 2017.
Greetings all,
This month’s newsletter is devoted to Data Assimilation and its techniques and progress for operational oceanography.
Gary Brassington is first introducing this newsletter with a paper telling us about the international summer school for “observing,
assimilating and forecasting the ocean” which will be held in Perth, Western Australia in 11-22 January 2010
(http://www.bom.gov.au/bluelink/summerschool/). The course curriculum will include topics covering the leading edge science in
ocean observing systems, as well as the latest methods and techniques for analysis, data assimilation and ocean modeling.
Scientific articles about Data Assimilation are then displayed as follows: The first article by Broquet et al. is dealing with Ocean
state and surface forcing correction using the ROMS-IS4DVAR Data Assimilation System. Then, Cosme et al. are describing the
SEEK smoother as a Data Assimilation scheme for oceanic reanalyses. The next article by Brankart et al. is displaying a synthetic
literature review on the following subject: Is there a simple way of controlling the forcing function of the Ocean? Then Ferry et al.
are telling us about Ocean-Atmosphere flux correction by Ocean Data Assimilation. The last article by Oke et al. is dealing with
Data Assimilation in the Australian BlueLink System.
The next October 2009 newsletter will review the current work on ocean biology and biogeochemistry.
We wish you a pleasant reading!
Retrospective Analysis of Antarctic Tracking DataAlison Specht
Prof. Mark Hindell from the University of Tasmania and a member of the SCAR-RAATD group of CESAB gave this talk at the 6th International Biologging conference in Germany in 2017.
Greetings all,
This month’s newsletter is devoted to Data Assimilation and its techniques and progress for operational oceanography.
Gary Brassington is first introducing this newsletter with a paper telling us about the international summer school for “observing,
assimilating and forecasting the ocean” which will be held in Perth, Western Australia in 11-22 January 2010
(http://www.bom.gov.au/bluelink/summerschool/). The course curriculum will include topics covering the leading edge science in
ocean observing systems, as well as the latest methods and techniques for analysis, data assimilation and ocean modeling.
Scientific articles about Data Assimilation are then displayed as follows: The first article by Broquet et al. is dealing with Ocean
state and surface forcing correction using the ROMS-IS4DVAR Data Assimilation System. Then, Cosme et al. are describing the
SEEK smoother as a Data Assimilation scheme for oceanic reanalyses. The next article by Brankart et al. is displaying a synthetic
literature review on the following subject: Is there a simple way of controlling the forcing function of the Ocean? Then Ferry et al.
are telling us about Ocean-Atmosphere flux correction by Ocean Data Assimilation. The last article by Oke et al. is dealing with
Data Assimilation in the Australian BlueLink System.
The next October 2009 newsletter will review the current work on ocean biology and biogeochemistry.
We wish you a pleasant reading!
NUMERICAL MODELLING OF BRINE DISPERSION IN SHALLOW COASTAL WATERSIAEME Publication
Fresh water is a limited finite resource, vital for the existence of every life on earth. It is becoming a scarce commodity. This is due to population growth, climatic changes with more frequent extreme events such as droughts and floods, increased water contamination of existing supplies, inefficient use of water etc. To overcome this scarcity, creation of fresh water from sea water by the process of desalination is a effective and reliable way. Hence desalination plants are being widely used in coastal areas.
DSD-SEA 2018 Development of an operational storm surge forecasting system for...Deltares
Presentation by Mrs. Piyamarn Sisomphon, PhD., (the Hydro Agro Informatics Institute, Thailand) at the Seminar Cutting Edge Hydro Software for South-East Asia, during the Deltares Software Days South-East Asia 2018. Thursday, 6 September 2018, Yogyakarta.
This study was aimed to know the sedimentation rate and the total suspended solid of the estuary in
relation to the implementation of melombo culture practice area. The sedimentation rate was measured using
sediment traps placed in 3 set stations and data were taken for 8 months of two weeks interval. The sediment
traps weremade of PVC pipe, 11.5 cm long and 5 cm diameter and located at 20 cm above the sea bottom.
Sediment samples were firstly soaked in freshwater for approximately 4 hours to remove salt content.
Sedimentation rate was determined as πr
2
h/time length, while Total Suspensi Solid (TSS) followed the formula
of Eaton, et al (1995). Results showed that the sediment trapped in station 1 ranged from 5.6 cm (109.9 cm3
) –
7.7 cm (151.11 cm3
) with an average of 6.61 cm (129.7 cm3
), station 2 from 5.3 cm (104 cm3
) to 8.5 cm (166.8
cm
3
) with an average of 7.18 cm (140.9 cm3
) and station 3 from 3.8 cm (74.6 cm3
) to 7.6 cm (149.2 cm3
) with an
average of 6.8 cm (133.8 cm3
), respectively. Total suspended solids (TSS) ranged from 18.28 to 50.60 with an
average of29.165 (29.59%) for station 1, 27.84 to 47.48 with an average of38.99 (39.56%) for station 2, and
18.28 to 50.60 with an average of 30.405 (30.85%) for station 3, respectively.Based upon the decree of Living
Environment Minister Numbered 51, 2004, for marine biota, the TSS has been above the standard seawater
quality.
GIS based spatial distribution of Temperature and Chlorophyll-a along Kalpakk...IJERA Editor
This paper briefly describes the status of Temperature and Chlorophyll-a trend in Kalpakkam Coast, discusses its ecological and temperature impacts recommending measures to achieve long term sustainability using advanced tools like Geographic Information System (GIS). Present study reveals the monthly spatial distribution of Temperature and Chlorophyll-a at Kalpakkam. Transect based in-situ Temperature and Chlorophyll-a collected at 200m, 500m and 1 km distance into the sea was interpolated using the Inverse Distance Weightage (IDW) method in ARC GIS. Data revealed the extent of spatial distribution of thermal effluent in Kalpakkam. It could be found that temperature range of 26.2 – 31.9°C provided substantial Chlorophyll-a concentration between 0.8 – 2.9 mg/m3 for surface and bottom waters. Further, increase of Chlorophyll-a levels did not lead to higher productivity. Combined temperature and chlorophyll a showed little synergistic effects. It is concluded that the effect of thermal discharge from the power plant into the receiving water body is quite localized and productivity of the coastal waters are not affected. From the results obtained, the spatial data has been found to be useful in determining zones of safe use of seawater and to understand the extent of relationship between the relatable parameters.
DSD-INT 2018 Tidal propagation and salt intrusion in the multi-channel estuar...Deltares
Presentation by Sepehr Eslami Arab, University of Utrecht, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
Barry Berejikian's presentation on Steelhead survival rates in Puget Sound, at the 2014 Nisqually Annual Program Review. Barry is a scientist for NOAA.
การนำเสนอบทความวิชาการในการประชุมวิชาการ 15th GMSARN International Conference 2020 on “Sustainable Energy, Environment and Climate Change Transitions in GMS” 21-22 December 2020, Krungsri River Hotel, Phra Nakhon Si Ayutthaya, Thailand. ในรูปแบบออนไลน์
หัวข้อ Prediction of Future Inflow Discharge to Sirikit Dam under Climate
and Land Use Change Projections, Upper Nan River Basin, Thailand
The energy of sea waves can be absorbed by wave energy converters in a variety of manners, but in every case
the transferred power is highly fluctuating in several time-scales, especially the wave-to-wave or the wave group
time-scales. In most devices developed or considered so far, the final product is electrical energy to be supplied
to a grid. This paper discusses the use of sea wave energy with the help of oscillating column. The mechanism
converts the wave energy in to electrical power by converting the oscillating motion of waves in to rotary
motion. Using compression ring we can store the power produced by the impact. This stored energy can be
utilized in other strokes. The sea, which covers three quarters of the world’s surface, has been little utilized to
meet the peoples’ energy needs.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
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.
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NUMERICAL MODELLING OF BRINE DISPERSION IN SHALLOW COASTAL WATERSIAEME Publication
Fresh water is a limited finite resource, vital for the existence of every life on earth. It is becoming a scarce commodity. This is due to population growth, climatic changes with more frequent extreme events such as droughts and floods, increased water contamination of existing supplies, inefficient use of water etc. To overcome this scarcity, creation of fresh water from sea water by the process of desalination is a effective and reliable way. Hence desalination plants are being widely used in coastal areas.
DSD-SEA 2018 Development of an operational storm surge forecasting system for...Deltares
Presentation by Mrs. Piyamarn Sisomphon, PhD., (the Hydro Agro Informatics Institute, Thailand) at the Seminar Cutting Edge Hydro Software for South-East Asia, during the Deltares Software Days South-East Asia 2018. Thursday, 6 September 2018, Yogyakarta.
This study was aimed to know the sedimentation rate and the total suspended solid of the estuary in
relation to the implementation of melombo culture practice area. The sedimentation rate was measured using
sediment traps placed in 3 set stations and data were taken for 8 months of two weeks interval. The sediment
traps weremade of PVC pipe, 11.5 cm long and 5 cm diameter and located at 20 cm above the sea bottom.
Sediment samples were firstly soaked in freshwater for approximately 4 hours to remove salt content.
Sedimentation rate was determined as πr
2
h/time length, while Total Suspensi Solid (TSS) followed the formula
of Eaton, et al (1995). Results showed that the sediment trapped in station 1 ranged from 5.6 cm (109.9 cm3
) –
7.7 cm (151.11 cm3
) with an average of 6.61 cm (129.7 cm3
), station 2 from 5.3 cm (104 cm3
) to 8.5 cm (166.8
cm
3
) with an average of 7.18 cm (140.9 cm3
) and station 3 from 3.8 cm (74.6 cm3
) to 7.6 cm (149.2 cm3
) with an
average of 6.8 cm (133.8 cm3
), respectively. Total suspended solids (TSS) ranged from 18.28 to 50.60 with an
average of29.165 (29.59%) for station 1, 27.84 to 47.48 with an average of38.99 (39.56%) for station 2, and
18.28 to 50.60 with an average of 30.405 (30.85%) for station 3, respectively.Based upon the decree of Living
Environment Minister Numbered 51, 2004, for marine biota, the TSS has been above the standard seawater
quality.
GIS based spatial distribution of Temperature and Chlorophyll-a along Kalpakk...IJERA Editor
This paper briefly describes the status of Temperature and Chlorophyll-a trend in Kalpakkam Coast, discusses its ecological and temperature impacts recommending measures to achieve long term sustainability using advanced tools like Geographic Information System (GIS). Present study reveals the monthly spatial distribution of Temperature and Chlorophyll-a at Kalpakkam. Transect based in-situ Temperature and Chlorophyll-a collected at 200m, 500m and 1 km distance into the sea was interpolated using the Inverse Distance Weightage (IDW) method in ARC GIS. Data revealed the extent of spatial distribution of thermal effluent in Kalpakkam. It could be found that temperature range of 26.2 – 31.9°C provided substantial Chlorophyll-a concentration between 0.8 – 2.9 mg/m3 for surface and bottom waters. Further, increase of Chlorophyll-a levels did not lead to higher productivity. Combined temperature and chlorophyll a showed little synergistic effects. It is concluded that the effect of thermal discharge from the power plant into the receiving water body is quite localized and productivity of the coastal waters are not affected. From the results obtained, the spatial data has been found to be useful in determining zones of safe use of seawater and to understand the extent of relationship between the relatable parameters.
DSD-INT 2018 Tidal propagation and salt intrusion in the multi-channel estuar...Deltares
Presentation by Sepehr Eslami Arab, University of Utrecht, The Netherlands, at the Delft3D - User Days (Day 2: Hydrodynamics), during Delft Software Days - Edition 2018. Tuesday, 13 November 2018, Delft.
Barry Berejikian's presentation on Steelhead survival rates in Puget Sound, at the 2014 Nisqually Annual Program Review. Barry is a scientist for NOAA.
การนำเสนอบทความวิชาการในการประชุมวิชาการ 15th GMSARN International Conference 2020 on “Sustainable Energy, Environment and Climate Change Transitions in GMS” 21-22 December 2020, Krungsri River Hotel, Phra Nakhon Si Ayutthaya, Thailand. ในรูปแบบออนไลน์
หัวข้อ Prediction of Future Inflow Discharge to Sirikit Dam under Climate
and Land Use Change Projections, Upper Nan River Basin, Thailand
The energy of sea waves can be absorbed by wave energy converters in a variety of manners, but in every case
the transferred power is highly fluctuating in several time-scales, especially the wave-to-wave or the wave group
time-scales. In most devices developed or considered so far, the final product is electrical energy to be supplied
to a grid. This paper discusses the use of sea wave energy with the help of oscillating column. The mechanism
converts the wave energy in to electrical power by converting the oscillating motion of waves in to rotary
motion. Using compression ring we can store the power produced by the impact. This stored energy can be
utilized in other strokes. The sea, which covers three quarters of the world’s surface, has been little utilized to
meet the peoples’ energy needs.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
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.
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DSD-INT 2023 Coupling RIBASIM to a MODFLOW groundwater model - BootsmaDeltares
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DSD-INT 2023 Parameterization of a RIBASIM model and the network lumping appr...Deltares
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Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
OpenFOAM solver for Helmholtz equation, helmholtzFoam / helmholtzBubbleFoamtakuyayamamoto1800
In this slide, we show the simulation example and the way to compile this solver.
In this solver, the Helmholtz equation can be solved by helmholtzFoam. Also, the Helmholtz equation with uniformly dispersed bubbles can be simulated by helmholtzBubbleFoam.
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Atelier - Innover avec l’IA Générative et les graphes de connaissancesNeo4j
Atelier - Innover avec l’IA Générative et les graphes de connaissances
Allez au-delà du battage médiatique autour de l’IA et découvrez des techniques pratiques pour utiliser l’IA de manière responsable à travers les données de votre organisation. Explorez comment utiliser les graphes de connaissances pour augmenter la précision, la transparence et la capacité d’explication dans les systèmes d’IA générative. Vous partirez avec une expérience pratique combinant les relations entre les données et les LLM pour apporter du contexte spécifique à votre domaine et améliorer votre raisonnement.
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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.
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
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✅More than 85 AI features are included in the AI pilot.
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See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-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
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
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✅Use Gemini to Build high-converting Converting Sales Video Scripts, ad copies, Trending Articles, blogs, etc.100% unique!
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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
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A Sighting of filterA in Typelevel Rite of Passage
DSD-SEA 2019 Recent coupled field observation and modeling works in Thai Seas-Pokavanich
1. Recent coupled field observation and
modeling works in Thai Seas
Dr. Tanuspong Pokavanich
Estuarine and Coastal Dynamics Modeling Laboratory (ECDM)
Department of Marine Science, Faculty of Fisheries, Kasetsart University
Email: ffistop@ku.ac.th
27 November 2019
2. ดร. ธนัสพงษ์ โภควนิช (วศ.ด.)
Dr. Tanuspong Pokavanich (D.Eng.)
อาจารย์ - ภาควิชาวิทยาศาสตร์ทางทะเล คณะประมง มหาวิทยาลัยเกษตรศาสตร์
Lecturer - Department of Marine Science, Faculty of Fisheries, Kasetsart
University
Former career
2010-2016 Associate Research Scientist (KISR-Kuwait)
2009-2010 Post- doc research (Tokyo Institute of Technology-Japan)
2003 -2004 Coastal Engineer (SEATEC-Thailand)
Education
o Bachelor of Engineering 1998 – Civil Engineering, Sirindhon International
Institute of Technology-Thammasat University
o Master of Engineering 2003 -Water Engineering and Management, Asian
Institute of Technology -Thailand
o Doctoral of Engineering 2009 – Environmental informatics, Tokyo Institute
of Technology - Japan
Expertise
Coastal oceanography, Field instrument
and measurement, Hydrodynamics and
water quality modeling
7. Problem is that we
can not measure
everywhere and
everytime !!!
We measure!!!
8. Modeling is much
better and cheaper
and safer and
…..etc.
Problem is that
how to know that
modeling results
are correct?Tidal current pattern at the Gulf of Thailand
9. The answer greatly depends on
problems (processes) that you
are looking at !!
Water level validation
Water Temperature validation Salinity validation
Ok sure, we compare
the measurements
and modeling results.
Acceptable?
Measured
Simulated
14. Tanuspong Pokavanich, Kittipong Pattananurat
Department of Marine Science
Faculty of Fisheries, Kasetsart University
Progress on Developing
3D-Hydrodynamic Model
of the Gulf of Thailand
23 September 2019
Tracer trajectory
Water circulation pattern
Special Seminar on 23 September 2019, Department of Marine
Science, Faculty of Fisheries, Kasetsart University, Thailand
15. The Gulf of
Thailand (GoT) is
a big shallow
estuary extended
from the South
China Sea (part
of Pacific Ocean).
Water depth (m)
17. Gulf of Thailand
Inner-Gulf of
Thailand
• Shallow (average 45 m,
maximum 80 m)
• Diurnal and mixed tide range
2.5-3.0 m
• Dominate by SW and NE
monsoonal wind
• Recipient of wastewater
discharged from big cities and
4 Thailand’s major rivers.
• Source of natural gas and oil
18. Now, the Inner-Gulf of Thailand having Serious
problems on Fisheries, Water Quality especially
during the SW monsoon (Flooding season).
Depth (m)
19.
20. Existing Problems at the GoT
Marine debris
Landed marine debris
Pore sediment quality Eutrophication and plankton bloom
More frequent massive fish-kill
Microplastics
Oil spilled
Eastern Economic Corridor (EEC)
21. 3+1 major factors that move water in
the GoT
1. Wind driven currents
2. Tidal driven currents
3. Thermohaline (or density driven) currents
+
4. Interactions between the GoT and SCS
22. What is a level of interactions
between the GoT and South-
China Sea ???
Another big question to
be investigated…
To study the current and circulation patterns and their seasonal
changes using 3D hydrodynamic model which calibrate and
validate with field observed data
Objectives
23. Numerical model setup
Setup lists 3D Gulf of Thailand model
Simulation period 1/1/2018-31/5/2019
Validation period 26/1/2018-24/5/2019, 22/1/2019-31/5/2019,
16/3/2019-31/5/2019
Type of grid Curvilinear grid in Spherical coordinate
Vertical layer 10 layers
Initial conditions 0 m water level and 0 velocity
Bottom roughness chezy 70 m1/2/s
Time step 3 minutes
Discharge data Monthly average discharge data from Hydro
and Agro Informatics Institute
Off-shore boundaries condition TPXO 9.0: Global Inverse Tide Model –Tidal
components, Salinity and Temperature Monthly
average data from JAMSTEC
*** Salinity -5 ppt
10 m Wind direction and velocity,
air pressure, 2 m air temperature,
total cloud cover, total
precipitation, relative humidity
Hourly data form ERA5 reanalysis dataset
31. Model validation – Near-surface water temperature
observationsimulation
Celsius
**Field observation from Dr. Shettapong Meksumpan’s project, KU
Apr 2017 Jul 2017 Dec 2017 Apr 2018
32. Model validation – Near-surface salinity
observationsimulation ppt
Apr 2017 Jul 2017 Dec 2017
Near-surface
Apr 2018
**Field observation from Dr. Shettapong Meksumpan’s project, KU
39. Simulated surface larval transport
-Unpublished materials-
Dr. Tanuspong Pokavanich
Dept. of Marine Science
Faculty of Fisheries,
Kasetsart University
18/12/2018
January August
40. January 2018
Dr. Tanuspong Pokavanich
Dept. of Marine Science
Faculty of Fisheries,
Kasetsart University
18/12/2018
Simulated surface
larval transport
-Preliminary results-April 2018
41. August 2018
Dr. Tanuspong Pokavanich
Dept. of Marine Science
Faculty of Fisheries,
Kasetsart University
18/12/2018
Simulated surface
larval transport
-unpublished materials-October 2017
42. Development of Satellite Drifter
The drifter aims to provide 1 hour interval self-
position for minimum 1 month.
Prototype
design
46. Seasonal Water Residence Time Investigation at
Ao Kung Krabaen Lagoon, Chantaburi Province
Tanuspong Pokavanicha* Anukul Buranaprathepratb
a Department of Marine Science, Faculty of Fisheries, Kasetsart University
2 Department of Aquatic Science, Faculty of Science, Burapha University
*Email: ffistop@ku.ac.th
27/11/2018
47. Characteristics of the Ao Kung Krabaen Lagoon
0 1 2 km
N •6.7 km2 lagoon
•Low-inflow estuary
•Avg. depth of 0.8 m
•Tidal range 1.6 m (spring tide) and
0.6 m (neap tide)
•Dominated by NE and SW
monsoonal wind
•Seagrass, mangrove, resorts, local
fishing villages and intensive
shrimp farming complex
48. Intensive shrimp farming at the AKBL
• AKBL* has started in 1986 with black tiger shrimp farming.
• Disease outbreaks in 1990 (YHV), 1994-1995 (SEMBV)
• Opened-system to closed-system
• Seawater irrigation (max. 10 m3/s)
• Deteriorated water quality
*AKBL = Ao Kung Krabaen Lagoon
Therefore, insight knowledge about
oceanography (such as currents,
circulation and water residence time)
is needed and essential for better
water management.
49. Objective
To study in circulation, water residence time and seasonal
variation at Ao Kung Krabaen Lagoon
Scope of the Research
•Using numerical model and hydrodynamic model to simulate
current, circulation controlled by tidal wind and water density
•Simulate water residence time by analyze residence time of
conservative tracer
54. Plastic PVC pipe
Rubble ban
Plastic mesh
Known length nylon rope
WLL Data logger
HOBO-WLL (Onset,
USA) pressured
logger was deployed
btw 24 April to 13
May 2017
Water level (tide) variation data collection
inside the AKKL
WLL Data logger
Rubber ban
Plastic mesh -1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
24-Apr-17
25-Apr-17
26-Apr-17
27-Apr-17
28-Apr-17
29-Apr-17
30-Apr-17
01-May-17
02-May-17
03-May-17
04-May-17
05-May-17
06-May-17
07-May-17
08-May-17
09-May-17
10-May-17
11-May-17
12-May-17
13-May-17
14-May-17
m
Date
Measured water level
55. 20 cm/s
20 cm/s
20 cm/s
20 cm/s
Flood tide
High tide
Ebb tide
Flood tide
Current Measurement using ADCP
56. Numerical model setup
Offshore
boundaries
Item GoT (2D) Chanthaburi (3D)
Sim. Period 1 Jan to 31 Dec 2015
Mesh Curvilinear grid in spherical coordinate
No. vertical layer 1 6
Time step 5 minute 1 minute
Initial condition Uniformly rested water
Bottom roughness Chezy 65
Hor. eddy viscosity 10.0 m2/s 1 m2/s
Hor. diffusivity - 10 m2/s
Offshore boundary
condition
TPXO8.0: Global Inverse
Tide Model
GoT Model
Wind & Air pressure data
6 hourly ECMWF-ERA Interim –spatial and
temporal varying data
Air tem, Relative humidity,
Cloud cover data
6 hourly ECMWF-ERA Interim –spatial and
temporal varying data
Delft3D-FLOW
249*416
GoT model GoT model
57. Modelled Results Validation: GoT scale
Water level values
between simulated
and measured water
level at different
locations at the GoT
show comparable
results.
66. AO Bando Bay is one of the most
(maybe the most) productive
water body in Thailand.
67. Prediction of Blue Swimming Crab Laval Dispersion
at Ao Bandon Bay, Surat Thani Province
Dr. Tanuspong Pokavanich
Department of Marine Science, Faculty of Fisheries
Kasetsart University
Asst. Prof. Dr. Amornsak Sawasdee
Faculty of Science, Walailuk University
Dr. Piyamarn Srisomporn
Numerical modelling section
Hydro Informatics Institute 03/07/2561
68. Objectives
1. To examine current, circulation and oceanographic properties of
the water bodies.
2. To examine the larval transport of the BSC and changes in seasons.
Life cycle
of the BSC
10 days plankton !
84. Final Concluding Remarks
•Numerical modelling can not represent everything in
the real-world.
•Field observation although can provide best
information of the real-world but has many
limitations.
•Coupled field observation and numerical modelling
therefore can be feasible and provide realistic
information for many application.
☺
85. “ No one can whistle a symphony.
It takes a whole orchestra to play it.”
Hallford Loccok
Thank you.
86.
87.
88.
89.
90. SW monsoon NE monsoon
Averaged monthly wind vector over the Gulf of Thailand (Source:
http://www.remss.com/)
Wind rose between 2008-
2018 at BKK
99. Concluding Remarks
✓ We successfully developed a 3D hydrodynamic model of the GoT with
acceptable weekly and seasonally accuracy at the Inner-GoT.
✓ This 3D model can be used to investigate hydrodynamic characteristics
of the Inner-Gulf of Thailand.
✓ The Inner-GoT circulation is highly influenced by river-runoff and
monsoonal wind direction and the tropical storm event.
✓ Operational prediction system of the hydrodynamics of the Inner-GoT is
possible through integration of the 3D model with atmospheric model
and river run-off prediction and real-time field observation at HII.
100. Concluding remarks
•The AKBL is a smaller water body that has short water residence time.
•The residence time of the lagoon is 2-3 days and varies seasonally.
•Numerical model shows significant variation of the oceanographic condition
inside the lagoon which can affect the lagoon ecosystem.
•More field data and model calibration is needed.
•Future works should include the seawater irrigation system, shrimp farming
activities into the model and evaluate influences of them to the lagoon system.