ADCP current measurements (75 kHz) during SONNE cruise SO283


Upper-ocean current velocities were measured along the track of the cruise SO283 (19 March — 25 May 2021) using a vessel-mounted acoustic current Doppler profiler (ADCP). The instrument was a Teledyne RD Instruments 75-kHz Ocean Surveyor, with the transducer was installed 6.5 m below the waterline. The instrument was operated in narrowband mode to achieve the maximum possible range. Velocity data were recorded in 100 8-m bins. The navigational data, as well as heading, pitch and roll data, were recorded together with the velocity measurements by the data acquisition software (VmDAS). The velocity data were converted into earth coordinates and averaged into one-minute intervals. A water track calibration was used to determine misalignment angle (-0.746°) and amplitude factor (1.002). The accuracy of the velocity data varies, and depends on the number of available good pings in each depth cell during one measurements interval.

Related Identifier
Metadata Access
Creator Mertens, Christian; Dengler, Marcus; Lahajnar, Niko
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2022
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 17539368 data points
Discipline Acoustics; Engineering Sciences; Mechanical and industrial Engineering; Mechanics and Constructive Mechanical Engineering
Spatial Coverage (-24.928W, -33.753S, 17.583E, 41.620N)
Temporal Coverage Begin 2021-03-22T19:52:00Z
Temporal Coverage End 2021-05-12T09:59:00Z