NDLI: Monitoring Suspended Sediment Plumes Using an Acoustic Doppler Current Profiler

Content Provider	IEEE Xplore Digital Library
Author	Wood, J.D. Boye, D.
Copyright Year	2007
Description	Author affiliation: Ocean Data Technol. Inc., Marstons Mills (Wood, J.D.)
Abstract	Monitoring suspended material plumes during dredging projects or undersea construction operations is often a fundamental requirement of state and federal Section 401/404 Water Quality Certificate regulations to protect water quality and minimize potential environmental impacts. Traditional monitoring techniques typically employ in-situ turbidity monitoring and collection of water quality samples at pre-defined locations (some distance down current of the activity) and at specified times. However, sediment plumes can have complex spatial and temporal structures, specifically small length scales (order ~10's of meters) and temporal scales (order -minutes). Applying traditional sampling techniques under these conditions can result in the underestimation of suspended sediment concentrations and the collection of water quality samples that are not representative of project related impacts. Recent environmental monitoring surveys used an acoustic Doppler current profiler (ADCP) to overcome the uncertainties associated with open-water plume tracking. As a current meter, the ADCP provides real-time current data to aid in predicting the path and arrival time of a plume at a given permit compliance distance downstream. Acoustic backscatter, or the signal strength received by the transducer, provides an indicator of suspended material concentrations in the water column, allowing the ADCP to provide continuous full water depth profiles of relative suspended sediment concentrations beneath the survey vessel. This backscatter display is an essential tool to provide a high-resolution visualization of the spatial and temporal variability of the suspended material plume. As a result, the ADCP allows for improved, or "targeted", sampling and in-situ data collection from a location and depth that accurately represents water quality conditions during a given project activity.
Starting Page	1
Ending Page	7
File Size	5366609
Page Count	7
File Format	PDF
ISBN	9780933957350
DOI	10.1109/OCEANS.2007.4449165
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-29
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Monitoring Sediments Underwater acoustics Sampling methods Backscatter Building materials Protection Uncertainty Underwater tracking Acoustic transducers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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