An acoustic Doppler current profiler (ADCP) underwater Abrolhos reefs, Bahia state, Brazil

---

An acoustic Doppler current profiler (ADCP) is a hydroacoustic current meter similar to a sonar, attempting to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column. The term ADCP is a generic term for all acoustic current profilers[1] although the abbreviation originates from an instrument series introduced by RD Instruments in the 1980s. The working frequencies range of ADCPs range from 38 kHz to several Megahertz.

---

Size: 6000px × 4000px
Location: Abrolhos, Bahia, Brazil
Photo credit: © Leo Francini / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abrolhos, acoustic, adcp, area, bahia, brazil, coral, current, dive, doppler, marine, marinho, nacional, national, park, parque, profiler, protected, reef, research, scuba, studies, underwater