Nitsche, Frank; Kopte, Robert; Lobo, Bertrand; Nischik, Timo (2023): ADCP current measurements (75 kHz) during RV MARIA S. MERIAN cruise MSM114/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957639
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2023-05-10 • DOI registered: 2023-06-08
Abstract:
Upper-ocean velocities along the cruise track of Maria S. Merian cruise MSM114/2 were continuously collected by a vessel-mounted Teledyne RD Instruments 75 kHz Ocean Surveyor ADCP. The transducer was located at 6.0 m below the water line. The instrument was operated in narrowband mode with 8 m bins and a blanking distance of 8.0 m, while 100 bins were recorded using a pulse of 1.45 s. Heading, pitch and roll data from the ship's gyro platforms and the navigation data were used by the data acquisition software VmDas internally to convert ADCP velocities into earth coordinates. The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the ship's heading data. Further errors stem from a misalignment of the transducer with the ship's centerline. Data post-processing included water track calibration of the misalignment angle (0.65° +/- 0.5292°) and scale factor (1.0091 +/- 0.0089) of the Ocean Surveyor signal. The verage interval was set to 60 s. Velocity quality flagging is based on following threshold criteria: abs(UC) or abs(VC) > 1.5 m/s, rms(UC_z) or rms(VC_z) > 0.5.
Related to:
Nitsche, Frank; Kopte, Robert; Lobo, Bertrand; Nischik, Timo (2023): ADCP current measurements (38 kHz) during RV MARIA S. MERIAN cruise MSM114/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957638
Other version:
nc file: ADCP current measurements (75 kHz) during RV MARIA S. MERIAN cruise MSM114_2 (2023). msm_114_2_vmadcp_75khz.nc
Data processing report:
Kopte, Robert (2023): Upper-ocean acoustic Doppler current profiler (75kHz-ADCP) underway measurements during MARIA S. MERIAN cruise MSM114_2. Institute of Geosciences, Kiel University, msm_114_2_vmadcp_75khz_proc_report.pdf
Standard operating procedure:
Kopte, Robert; Betz, Maximilian; Anselm, Norbert (2022): SOP 75kHz ADCP aboard of RV Maria S Merian ( vessel:maria_s_merian:adcp_75khz_2096). Zenodo, https://doi.org/10.5281/zenodo.7022743
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: -9.940210 * Median Longitude: -26.769584 * South-bound Latitude: -47.547200 * West-bound Longitude: -60.739300 * North-bound Latitude: 16.358700 * East-bound Longitude: -22.780600
Date/Time Start: 2023-01-23T19:12:00 * Date/Time End: 2023-02-20T15:52:00
Minimum DEPTH, water: 22.0 m * Maximum DEPTH, water: 814.0 m
Event(s):
MSM114/2_0_Underway-9 * Latitude Start: 16.358700 * Longitude Start: -25.127800 * Latitude End: -47.547200 * Longitude End: -60.739300 * Date/Time Start: 2023-01-23T19:12:00 * Date/Time End: 2023-02-20T15:52:00 * O2A Registry URI: hdl:10013/sensor.698c50c3-bf18-4fc8-aef6-1ef23736c590 * Campaign: MSM114/2 (ARC) * Basis: Maria S. Merian * Method/Device: Vessel mounted Acoustic Doppler Current Profiler [75 kHz] (VMADCP-75) * Comment: event was not logged in DSHIP
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
16272970 data points
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