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Instrument: ADCP : Acoustic Doppler Current Profiler
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The Acoustic Doppler Current Profiler (ADCP) measures currents
beneath a ship while underway. Sound signals sent from the
moving ship bounce back to receivers aboard the ship. This
provides a profile of water movement relative to the
ship-precise modern navigation, allowing the ship's motion to be
subtracted from the data. These devices are also used on
moorings and profilers and, along with acoustic backscattering,
measure animal biomass. Particles in the path of the sound
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