5 - ASB Systems - World Bank Hydro-meteorlogical instrumentation in India-Sep-15

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The document summarizes a workshop on hydro-meteorological instrumentation in India that covered measuring water currents and discharge using acoustic Doppler current profilers (ADCP), measuring sediments with ADCP, underwater imaging, and measuring water parameters with multiparameter probes. ADCPs can measure water current magnitude and direction at different levels from stationary or moving platforms and the data can also be used to measure suspended sediment concentrations and discharge. Underwater imaging sonars allow monitoring in zero visibility, deployment in hard to reach areas, and capabilities like mosaicing not possible with cameras. Multiparameter probes discussed included those for profiling water from boats and autonomous buoys for environmental monitoring.

Presentations & Public Speaking

Workshop on Hydro- Meteorological instrumentation in India 15th September’14, New Delhi
ASB Systems Pvt. Ltd.,
Mumbai

Overview
Measuring Water Currents & Discharge with ADCP
Measuring Sediments with ADCP
Underwater imaging
Measuring water parameters with Multiparameter probes

Over the Years
Technology advancement
Impeller based systems for currents
Intelligent ADCP RiverRay, RiverPRO
Introduction of ADCP
Changing trends in technology

ADCP
ADCP stands for “Acoustic Doppler Current Profiler” An ADCP can measure the magnitude and direction of water currents at different levels ADCP can be deployed from stationary as well as moving platforms ADCPs can be mounted vertically or horizontally

Models – Moving Platform
RiverRay
Streampro
Riverpro
RioGrande

Models – Fixed platform
Channelmaster
V-ADCP

ADCP for Sediment load
ADCP data can be used as a surrogate to measure Suspended Sediment Concentrations (SSC)
Suspended sediment discharge can be obtained by multiplying average SSC with water discharge
Software is available that enables the user to quantify sediment concentrations using an ADCP

ADCP for Sediment load
Proven technology is available to convert the Backscatter data into Sediment concentrations
An empirical relation betn backscatter and sediment concentration allows for the calculation of the SSC values

Aquavision ViSea DAS software suite can be used to configure the ADCP and acquire, present and save ADCP and additional sensor data in real time
Allows the user to compute Total sediment flux, 3D tracking of sediment during sediment relocation, Dredge and sediment behavior studies, calculate correlation between ADCP/OBS

Aquavision Modules
Compatible with Teledyne RDI ADCPs
ViseaDAS
Survey Toolbox
Plume detection Toolbox
•Acquisition
•Playback
•Re-process
•3D viewing
•Edge estimation
•Data plots
•Measure plumes
•Sediment studies
•Quantifying flux

More about PDT…
-Lets you quantify sediment concentrations using an ADCP
-Flexible, robust and can be used in real time
-Data from ViSea DAS is sent to the PDT and converted to sediment concentrations and total sediment flux

…is like comparing an Underwater Camera with an Imaging Sonar
An imaging Sonar can do a lot more…
UNDERWATER IMAGING

Things only a Sonar can do!
Zero visibility operation
Deploy where a diver cannot go
Underwater measurements
Mosaicing

•Real-time Imaging/Video streaming
•Stationary or mobile platform
•Dual frequency models
•Acts as a Stationary Sidescan
•2D, 3D,Multibeam,Sector scanner, Microbathymetry
Features

DAM INSPECTION
MEASURING SCOUR
2D SONARS
3D SONARS
SEARCH & RESCUE
BRIDGE INSPECTION

NKE Instrumentation
NKE MAREL Estuarine Station
Measurement of:
Physico-chemical properties
Meteorological paramaters
Currents
Channel temperature
Features
Autonomous
Well suited for both Fresh water & sea water
Remote maintenance

NKE Instrumentation
NKE SMATCH (Buoy)
Measurement of:
Temperature
Pressure
Conductivity
Turbidity
DO
Fluoroscence
Features
Environmental monitoring
Wireless configuration
GPRS link

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