Results 191 to 200 of about 12,890 (241)

Biological information from an Acoustic Doppler Current Profiler

Marine Biology, 1993
Acoustic Doppler Current Profilers (ADCPs) are now used routinely by physical oceanographers. A by-product of the signal processing for calculating the Doppler shift used to determine current velocity is the intensity of the acoustic backscatter, and this, in turn, is a measure of biomass.
H. S. J. Roe, G. Griffiths
openaire   +1 more source

Acoustic sampling effects on bedload quantification using acoustic Doppler current profilers

Journal of Hydraulic Research, 2020
This paper provides an evaluation of a hydro-acoustic technique for efficient quantification of the bedload transport in riverine environments.
Conevski S., Guerrero M., Winterscheid A., Rennie C. D., Ruther N.   +4 more
openaire   +2 more sources

Development of a shipboard acoustic Doppler current profiler

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
A shipboard long range acoustic Doppler current profiler (ADCP) was developed that can measure vertical profiles of ocean currents and acoustic backscattering strength in 32 layers up to a depth of 400 m and track the sea bottom up to a depth of 1000 m.
Y. Kuroda, G. Kai, K. Okuno
openaire   +1 more source

Current Profile Measurement Using Moored Acoustic Doppler Current Profiler

2008
Permanent monitoring of currents in the Adriatic coastal region is of great interest both scientifically and to the general public, because of their role in coastline sea life and their impact on economy and tourist activities. Moored ADCP is a convenient instrument for long time current studies.
Skelin, Dražan, Bublić, Ivan, Vukadin, Predrag   +2 more
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Intercomparison between acoustic Doppler current profilers

Proceedings of the IEEE Sixth Working Conference on Current Measurement (Cat. No.99CH36331), 1999
Acoustic Doppler current meters have revolutionised current measurements and the number of instrument manufacturers is rapidly increasing. On the Scandinavian scene, mainly RD Instruments and NORTEK A/S try to win the favour of the large number of potential customers.
openaire   +1 more source

Acoustic Doppler Current Profiling from Moored Subsurface Floats

OCEANS '87, 1987
A Doppler Acoustic Profiling Current Meter (DAPCM) was deployed in a sphere at the top of a subsurface mooring in the swift currents of the Strait of Gibraltar. Larger than expected currents caused vertical mooring excursions that in one case exceeded 150 m.
N. Pettigrew, J. Wood, E. Pape, G. Needell, J. Irish   +4 more
openaire   +1 more source

An intercomparison of two acoustic doppler current profilers

OCEANS '85 - Ocean Engineering and the Environment, 1985
An AMETEK Straza DCP4400 Doppler current profiler and an RD Instruments RD-SC1200 Doppler current profiler were operated simultaneously for a period of 5 days in the Port of Miami in bottom-mounted upward looking configurations. An EG&G-VMCM mooring was deployed between the two Doppler systems for the same period, and drifter experiments were also ...
G. Appell, T. Mero
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The acoustic Doppler current profiling system at AOML

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
The design and performance of the data acquisition and logging system of the acoustic Doppler current profiler on the NOAA ship Malcolm Baldrige are described. The accuracy of the absolute current measurements is limited by the ability to determine ship movement and orientation.
D. Wilson, D. Bitterman, C. Roffer
openaire   +1 more source

Water profile navigation with an Acoustic Doppler Current Profiler

OCEANS'10 IEEE SYDNEY, 2010
A novel navigation method is introduced using water current profiles measured by an Acoustic Doppler Current Profiler (ADCP) mounted on a moving vehicle. These current profiles are combined with measurements of vehicle attitude and depth to simultaneously estimate the local current and the vehicle velocity.
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Backscattered intensity profiles from horizontal Acoustic Doppler Current Profilers

2010
Horizontal Acoustic Doppler Current Profilers (HADCPs) are a relatively new instrument that can be used to measure cross-river profiles of streamwise velocity and may also provide a relative measure of particle concentration. A number of these instruments are currently installed along three French rivers at locations intermediate to power plants and ...
Moore, Stephanie A., Le Coz, Jérôme, Hurther, David, Paquier, André   +3 more
openaire   +2 more sources