A floating device for stationary hydroacoustic sampling in shallow waters
Uwe Krumme
Andreas Hanning
Abstract
A floating device was designed for use in stationary hydroacoustic studies of fish movements and current–speed measurements (Acoustic Doppler Current Profiler, ADCP) in the shallow inter- and subtidal zone of mangrove waters (3–10 m depth). The floating device was a stable platform for the hydroacoustic equipment. It features adjustable depth of the transducer below the water surface and adjustable beam direction (horizontal, vertical) of the echosounder. The design is simple, robust, and rapidly bolted together. The results of the ADCP measurements in the mangrove channel at the end of the wet season were unusable even at weak neap tides because bedload transport of fine muddy substrate led to missing bottom echoes that are required for the current–velocity calculation.
Krumme U. and Hanning A. (2005) A floating device for stationary hydroacoustic sampling in shallow waters. 73(3): 377-381. 10.1016/j.fishres.2005.01.010
@article{Krumme2005,
Title = {A floating device for stationary hydroacoustic sampling in shallow waters},
Author = {Krumme, Uwe and Hanning, Andreas},
Editor = {},
Year = {2005},
Pages = {377-381},
Volume = {73},
Doi = {10.1016/j.fishres.2005.01.010},
Abstract = {A floating device was designed for use in stationary hydroacoustic studies of fish movements and current–speed measurements (Acoustic Doppler Current Profiler, ADCP) in the shallow inter- and subtidal zone of mangrove waters (3–10 m depth). The floating device was a stable platform for the hydroacoustic equipment. It features adjustable depth of the transducer below the water surface and adjustable beam direction (horizontal, vertical) of the echosounder. The design is simple, robust, and rapidly bolted together. The results of the ADCP measurements in the mangrove channel at the end of the wet season were unusable even at weak neap tides because bedload transport of fine muddy substrate led to missing bottom echoes that are required for the current–velocity calculation.},
}
TY - JOUR
AU - Krumme, Uwe
AU - Hanning, Andreas
TI - A floating device for stationary hydroacoustic sampling in shallow waters
PY - 2005
SP - 377-381
VL - 73
DO - 10.1016/j.fishres.2005.01.010
AB - A floating device was designed for use in stationary hydroacoustic studies of fish movements and current–speed measurements (Acoustic Doppler Current Profiler, ADCP) in the shallow inter- and subtidal zone of mangrove waters (3–10 m depth). The floating device was a stable platform for the hydroacoustic equipment. It features adjustable depth of the transducer below the water surface and adjustable beam direction (horizontal, vertical) of the echosounder. The design is simple, robust, and rapidly bolted together. The results of the ADCP measurements in the mangrove channel at the end of the wet season were unusable even at weak neap tides because bedload transport of fine muddy substrate led to missing bottom echoes that are required for the current–velocity calculation.
ER -
