NDLI: Field testing of an instrument to measure near-surface currents from offshore platforms

Content Provider	IEEE Xplore Digital Library
Author	Mullison, J. Nicholas, C. Primrose, C.
Copyright Year	2003
Description	Author affiliation: RD Instrum. Inc., San Diego, CA, USA (Mullison, J.)
Abstract	We have carried out extensive field testing of an Acoustic Doppler Current Profiler (ADCP) designed to measure surface currents at ranges of 200-300 m by profiling horizontally from its mounting. The range of vertically profiling ADCPs is well documented, but horizontal profiling from offshore platforms presents unique, less well-understood factors influencing profiling range. These include the potential for interference from other sources on the platform, and that the concentration of scatterers (typically zooplankton) is now relatively uniform over the profiling range. A 300 kHz Horizontal ADCP (H-ADCP), specifically designed with large transducers for maximum range, was deployed from an operating drill ship in the Gulf of Mexico with a stated goal of characterizing its profiling range under varying conditions. The maximum range was determined under a number of possible configurations, which included varying the cell size, bandwidth and mounting depth. The H-ADCP presents a unique, simple means for obtaining continuous, real-time horizontal profiles of the near surface currents at significant ranges from an offshore platform. These near surface measurements can not be made with a conventional vertical ADCP due to interference from the platform and its thrusters. We here present a brief review of the measurement technique followed by a description of the tests performed during the trial. We then present the results from systematic testing intended specifically to empirically characterize the performance of this instrument from an offshore platform.
Sponsorship	Dept. of the Navy Sci. and Technol. Coalition for Enhanced Marine Resources Orincon Ceros Harbour Offshore Inc
Starting Page	1504
Ending Page	1509
File Size	600189
Page Count	6
File Format	PDF
ISBN	0933957300
DOI	10.1109/OCEANS.2003.178089
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Instruments Current measurement Acoustic testing Acoustic measurements Interference Acoustic scattering Transducers Marine vehicles Bandwidth Measurement techniques
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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