ADCP current measurements (38 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 38-kHz Ocean Surveyor, with the transducer was installed 6.5 m below the waterline....

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Bibliographic Details
Main Authors: Mertens, Christian, Dengler, Marcus, Lahajnar, Niko
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Acoustic Doppler Current Profiler
Acoustic Doppler Current Profiling (ADCP)
ADCP
currents
Current velocity
east-west
north-south
DATE/TIME
DEPTH
water
Echo intensity
relative
LATITUDE
LONGITUDE
North Atlantic
Pings
averaged to a double ensemble value
SO283
SO283_0_Underway-1
Sonne_2
South Atlantic
upper ocean
Vessel mounted Acoustic Doppler Current Profiler 38 kHz
VMADCP-38
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.940259
https://doi.org/10.1594/PANGAEA.940259
Description
Summary: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 38-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 55 32-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 (0.199°) and amplitude factor (1.007). The accuracy of the velocity data varies, and depends on the number of available good pings in each depth cell during one measurements interval.

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