NDLI: Results of a horizontally mounted ADCP under stratified conditions

Content Provider	IEEE Xplore Digital Library
Author	Kamminga, S.D. Visser, R.
Copyright Year	1999
Description	Author affiliation: Kamminga B.V., Zoetermeer, Netherlands (Kamminga, S.D.)
Abstract	Busy channels in a sea harbour do not easily allow current measurements in real time. Acoustic flow meters based on the principle of acoustic travel time have the disadvantages of their sensitivity to horizontal and vertical current variations and large costs of installation. Nevertheless, real time data of these currents is of importance for the guidance of ships as knowledge of the currents improves safety and allows a wider time window for entering and leaving the harbour. The goal is to investigate the possibility of using data of a horizontally mounted ADCP for measuring flow velocity and direction in a stratified river or channel. Measurements were performed during one month with a horizontally mounted ADCP in a 600 m wide waterway in the Port of Rotterdam. Ten transducers produce two horizontal acoustic beams pointing from one quay to the other. In order validate the system simultaneous measurements were carried out one the one hand with a vessel-mounted vertical ADCP on two transects during a tidal cycle and on the other hand with a frame-mounted vertical ADCP during a month. The authors compare the horizontal ADCP data with the data of a vessel-mounted and a frame-mounted ADCP. It has been shown that the horizontal ADCP averages flow over the upper fresher and more dynamic water layer with an accuracy of 0.15 m/s. They propose a method for real-time ship guidance by computing flow velocities averaged over the upper fresh water layer from horizontal ADCP data.
Starting Page	108
Ending Page	111
File Size	248504
Page Count	4
File Format	PDF
ISBN	0780355059
DOI	10.1109/CCM.1999.755224
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-03-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic measurements Sea measurements Marine vehicles Current measurement Costs Marine safety Fluid flow measurement Velocity measurement Rivers Performance evaluation
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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