Results 181 to 190 of about 12,890 (241)

Unraveling storm wave populations in the UAE with multivariate and clustering analysis. [PDF]

open access: yesSci Rep
Makarem F   +4 more
europepmc   +1 more source

Performance of a broad-band acoustic Doppler current profiler

IEEE Journal of Oceanic Engineering, 1991
A new broadband acoustic Doppler current profiler (ADCP) is described, with a useful range comparable to that of a commercially available narrowband (incoherent) system of the same acoustic frequency, but having enhanced performance. The extra performance may be traded off among (1) reduced velocity variance, (2) reduced averaging time, and (3) finer ...
B.H. Brumley   +3 more
openaire   +3 more sources

Hydroakustische Doppler-Strömungsprofilsensoren (Acoustic Doppler Current Profiler/ADCP)

2021
Nach einer Klassifizierung von Stromungs- und Stromungsprofilsensoren wird das Wirkungsprinzip von Vertikal(V)-ADCP-Sensoren behandelt und Stromungsprofilmessungen mit einem V-ADCP, installiert auf dem Messkatamaran MESSIN I, mit weiterentwickelten Programmen der Datenauswertung auf MATLAB®-Basis dargestellt.
Jürgen Majohr, Martin Kurowski
openaire   +1 more source

Deep ocean acoustic Doppler current profiling

Proceedings of the IEEE Fourth Working Conference on Current Measurement, 1990
A standard 300-kHz self-contained acoustic Doppler current profiler (ADCP) which was mounted with a CTD on a rosette sampler and used to obtain relative velocity profiles over the full ocean depth range is described. The unknown motion of the ADCP-CTD package is removed by averaging individual vertical shear profiles in depth bins and then integrating ...
E. Firing, R.L. Gordon
openaire   +1 more source

Calibration of acoustic Doppler current profiles

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings, 2003
The National Ocean Service of NOAA has recently conducted tests and established a laboratory calibration technique for Doppler current profilers. A cooperative effort was established with the manufacturer to assess the technique and the instrument's performance.
G.F. Appell   +3 more
openaire   +1 more source

Acoustic Doppler Current Profiler Wave Sentry buoy

OCEANS 2009, 2009
The design of a small Acoustic Doppler Current Profiler (ADCP) equipped Wave Sentry buoy can provide realtime remote measurement of wave data and ocean current profiles (surface to bottom) for operational and scientific exercises. The small size and weight of the system allows for deployment from small craft and provides military forces and the ...
Richard Smith   +3 more
openaire   +1 more source

Sunrise swimmers bias acoustic Doppler current profiles

Deep Sea Research Part A. Oceanographic Research Papers, 1992
Abstract Currents over Southeast Hancock Seamount summit in the central North Pacific Ocean were measured with a vessel-mounted acoustic Doppler current profiler (ADCP) on two cruises in 1988. After removing a linear trend, about half of the velocity variance was at diurnal and semidiurnal frequencies.
C.D. Wilson, E. Firing
openaire   +1 more source

TRIAXYS ™ Acoustic Doppler Current Profiler Comparison Study

Proceedings of OCEANS 2005 MTS/IEEE, 2005
A field trial was conducted during the summer months of 2004, off the West Coast of Vancouver Island comparing ADCP measurements from a buoy-based platform and two bottom based installations in about 45m depth. The buoy-based instrument was a Nortek 600KHz Aquadopp™ Acoustic Current Profiler (ACP) downward looking unit, integrated into the hull of a 1m
R. Kashino, T. Ethier, R. Phillips
openaire   +1 more source

Broad-band acoustic Doppler current profiler

Flow Measurement and Instrumentation, 1993
Abstract The broad-band acoustic Doppler current profiler is an instrument that determines velocity based on the Doppler principle by reflecting acoustic signals off sediment particles in the water. The instrument is capable of measuring velocity magnitude and direction throughout a water column and of measuring water depth.
openaire   +1 more source

Performance of a broadband acoustic Doppler current profiler

Proceedings of the IEEE Fourth Working Conference on Current Measurement, 1990
A broadband acoustic Doppler current profiler (ADCP) with enhanced performance is described. It has a useful range comparable to that of a commercially available narrowband system of the same acoustic frequency. The extra performance may be traded off among reduced velocity variance, reduced averaging time, and finer depth resolution.
B.H. Brumley   +3 more
openaire   +1 more source

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