Soltwedel, Thomas; Kopte, Robert (2023): ADCP current measurements (38 kHz) during RV MARIA S. MERIAN cruise MSM108 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.956600
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2023-03-16 • DOI registered: 2023-04-14
Abstract:
Upper-ocean velocities along the cruise track of Maria S. Merian cruise MSM108 were continuously collected by a vessel-mounted Teledyne RD Instruments 38 kHz Ocean Surveyor ADCP.
The transducer was located at 6.0 m below the water line. The instrument was operated in narrowband mode with 32 m bins and a blanking distance of 16.0 m, while 50 bins were recorded using a pulse of 2.81 s.
The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). 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.
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 (0.38° +/- 0.6278°) and scale factor (0.9954 +/- 0.0083) of the Ocean Surveyor signal. The average interval was set to 120 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) > 0.3.
Related to:
Soltwedel, Thomas; Asendorf, Volker; Barthelmeß, Theresa; Barz, Jakob; Becker, Kevin W; Becker, Noah; Boehringer, Lilian; Brinkmann, Talea; Dannheim, Jennifer; Hagemann, Jonas; Hasemann, Christiane; Hoge, Ulrich; Holt, Jonas; Janssen, Felix; Klüver, Tania; Kraberg, Alexandra Claudia; Lehmenhecker, Sascha; Purser, Autun; Schnier, Jannik (2022): LTER HAUSGARTEN 2022 Long-Term Ecological Research in the Fram Strait, Cruise No. MSM108, June 06 - July 03, 2022, Tromsø (Norway) - Tromsø (Norway). MARIA S. MERIAN-Berichte, Begutachtungspanel Forschungsschiffe, MSM108, 47 pp, https://doi.org/10.48433/cr_msm108
Other version:
nc file: ADCP current measurements (38 kHz) during RV MARIA S. MERIAN cruise MSM108 (2023). msm_108_vmadcp_38khz.nc
Data processing report:
Kopte, Robert (2023): Upper-ocean acoustic Doppler current profiler (38kHz-ADCP) underway measurements during MARIA S. MERIAN cruise MSM108. Institute of Geosciences, Kiel University, msm_108_vmadcp_38khz_proc_report.pdf
Standard operating procedure:
Kopte, Robert; Betz, Maximilian; Anselm, Norbert (2022): SOP 38kHz ADCP aboard of RV Maria S Merian (vessel:maria_s_merian:adcp_38khz_1207). Zenodo, https://doi.org/10.5281/zenodo.6821542
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: 78.430731 * Median Longitude: 5.498046 * South-bound Latitude: 70.574700 * West-bound Longitude: -3.038200 * North-bound Latitude: 79.739400 * East-bound Longitude: 19.394800
Date/Time Start: 2022-06-07T19:50:00 * Date/Time End: 2022-07-01T14:56:00
Minimum DEPTH, water: 150.0 m * Maximum DEPTH, water: 1622.0 m
Event(s):
MSM108_0_Underway-3 * Latitude Start: 70.571262 * Longitude Start: 19.407493 * Latitude End: 78.977061 * Longitude End: 7.179465 * Date/Time Start: 2022-06-07T19:48:00 * Date/Time End: 2022-06-17T22:02:06 * Elevation Start: -488.0 m * Elevation End: -1219.0 m * O2A Registry URI: https://hdl.handle.net/10013/sensor.aef4e051-46f9-4999-921c-8c7914866078 * Campaign: MSM108 (FRAM 2022) * Basis: Maria S. Merian * Method/Device: Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38)
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:
2176330 data points
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