NDLI: Field evaluation of ADCP refinements for profiling shallower waters

Content Provider	IEEE Xplore Digital Library
Author	Spain, P. Devine, P. Maier, S. Vogt, M.
Copyright Year	2003
Description	Author affiliation: RD Instrum., San Diego, CA, USA (Spain, P.; Devine, P.; Maier, S.; Vogt, M.)
Abstract	During recent years, RD Instruments (RDI) has received. increasing requests for the Acoustic Doppler Current Profiler (ADCP) to be able to operate in shallower water. Providing a well-resolved velocity profile in water depths of 0.6 m required several refinements of prior ADCP capabilities. These included creating an ADCP transducer (ZedHed/spl trade/) that has reduced ringing, bottom tracking at lower altitudes, increasing the pinging rate, and operating with smaller cell sizes in both slower and faster flows. This paper describes results from a field evaluation of these engineering developments. Data were collected by colocated 1200 kHz ADCPs during a flood/ebb cycle in a shallow, tidally affected, coastal lagoon north of San Diego, California. We installed in the lagoon bed a standard ADCP operating with a high ping rate (Mode 12). A ZedHed ADCP, set to work with high precision (Mode 11), was mounted in an Oceanscience's tri-hulled River Boat. Modes 11 and 12 were demonstrated to provide the capability to profile water depths of 0.6 m when used together with the ZedHed transducer (and the shallow bottom tracking capability for moving surveys). These modes were shown to meet noise specifications even for the small cell sizes required for profiling shallow water. An interesting possibility revealed in this work was the prospect of using Error Velocity in Mode 11 as a gauge of natural variability in turbulence and mixing studies.
Sponsorship	Current Meas. Technol. Committee of the Oceanic Eng. Soc. IEEE
Starting Page	40
Ending Page	45
File Size	506133
Page Count	6
File Format	PDF
ISBN	078037813X
DOI	10.1109/CCM.2003.1194280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sea measurements Rivers Velocity measurement Current measurement Transducers Instruments Boats Fault location Frequency Bandwidth
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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