Achterberg, Eric Pieter; Kopte, Robert; Galley, Christopher G (2022): ADCP current measurements (38 kHz) during RV METEOR cruise M176/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.946027
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Upper-ocean velocities along the cruise track of RV METEOR cruise M176/2 were continuously collected by a vessel-mounted Teledyne RD Instruments 38 kHz Ocean Surveyor ADCP. The transducer was located at 5.0 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 55 bins were recorded using a pulse of 2.90 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 (0.08° +/- 0.5936°) and scale factor (1.0026 +/- 0.0090) of the Ocean Surveyor signal. The average interval was set to 120 s.
Related to:
Achterberg, Eric Pieter; Steiner, Zvi (2021): Rainbow non-boyant hydrothermal plume GEOTRACES study, Cruise No. M176/2, 01.09.2021-06.10.2021, Emden (Germany) - Emden (Germany). METEOR-Berichte, Gutachterpanel Forschungsschiffe, M176/2, 108 pp, https://doi.org/10.48433/cr_m176_2
Data processing report:
Kopte, Robert (2022): Upper-ocean acoustic Doppler current profiler (38kHz-ADCP) underway measurements during Meteor cruise MET_176_2 - Data Processing Report. Institute of Geosciences, Kiel University, met_176_2_vmadcp_38khz_01_proc_report.pdf
Standard operating procedure:
Kopte, Robert; Betz, Maximilian; Anselm, Norbert (2022): SOP 38kHz ADCP aboard of RV Meteor ( vessel:meteor:adcp_38khz_1214k). Zenodo, https://doi.org/10.5281/zenodo.7525334
Project(s):
DAM Underway Research Data (DAM_Underway)
Coverage:
Median Latitude: 37.310326 * Median Longitude: -32.042370 * South-bound Latitude: 35.996300 * West-bound Longitude: -33.997900 * North-bound Latitude: 47.395800 * East-bound Longitude: -12.200300
Date/Time Start: 2021-09-04T12:56:00 * Date/Time End: 2021-09-27T18:34:00
Minimum DEPTH, water: 53 m * Maximum DEPTH, water: 1781 m
Event(s):
M176/2_0_Underway-1 * Latitude Start: 47.369380 * Longitude Start: -12.287500 * Latitude End: 41.762370 * Longitude End: -25.129900 * Date/Time Start: 2021-09-04T13:15:45 * Date/Time End: 2021-09-07T02:25:44 * Elevation Start: -4743.0 m * Elevation End: -3545.0 m * O2A Registry URI: https://hdl.handle.net/10013/sensor.302e7de2-7193-400e-8cd5-7bff90f614bc * Location: South Atlantic Ocean * Campaign: M176/2 (GPF 21‐2_049, Rainbow Plume) * Basis: Meteor (1986) * Method/Device: Acoustic Doppler Current Profiler (ADCP)
Comment:
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.
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:
4359940 data points
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