Hansteen, Thor H; Kopte, Robert (2022): ADCP current measurements (38 kHz) during RV METEOR cruise M175 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.946265
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2022-07-12 • DOI registered: 2022-08-11
Abstract:
Upper-ocean velocities along the cruise track of RV METEOR cruise M175 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 2.89 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 (-0.27° +/- 0.4616°) and scale factor (1.0019 +/- 0.0088) of the Ocean Surveyor signal. The average interval was set to 120 s.
Other version:
nc file: ADCP current measurements (38 kHz) during RV M175 [dataset]. met_175_vmadcp_38khz_01.nc
Data processing report:
Kopte, Robert (2022): Upper-ocean acoustic Doppler current profiler (38kHz-ADCP) underway measurements during Meteor cruise MET_175 - Data Processing Report. Institute of Geosciences, Kiel University, met_175_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: 41.706524 * Median Longitude: -23.744710 * South-bound Latitude: 35.112100 * West-bound Longitude: -34.872900 * North-bound Latitude: 47.917400 * East-bound Longitude: -10.362900
Date/Time Start: 2021-06-05T05:36:00 * Date/Time End: 2021-06-24T22:58:00
Minimum DEPTH, water: 53.0 m * Maximum DEPTH, water: 1781.0 m
Event(s):
M175_0_Underway-5 * Latitude Start: 47.917400 * Longitude Start: -10.589300 * Latitude End: 47.749100 * Longitude End: -10.362900 * Date/Time Start: 2021-06-05T05:36:00 * Date/Time End: 2021-06-24T22:58:00 * O2A Registry URI: https://hdl.handle.net/10013/sensor.302e7de2-7193-400e-8cd5-7bff90f614bc * Campaign: M175 (GPF 20-3_90, TRANSFORMERS II) * Basis: Meteor (1986) * Method/Device: Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) * Comment: event was not logged in DSHIP
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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Kopte, Robert | Geocode | ||
| 2 | LATITUDE | Latitude | Kopte, Robert | Geocode | ||
| 3 | LONGITUDE | Longitude | Kopte, Robert | Geocode | ||
| 4 | DEPTH, water | Depth water | m | Kopte, Robert | Geocode | |
| 5 | Current velocity, east-west | Cur vel U | cm/s | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 6 | Current velocity, north-south | Cur vel V | cm/s | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 7 | Quality flag, current velocity | QF cur vel | Kopte, Robert | Calculated | UV QC flag meanings= 0:unknown, 1:good_data, 2:probably_good_data, 3:potentially_correctable_bad_data, 4:bad_data, 5:not_used, 6:not_used, 7:nominal_value, 8:interpolated_value, 9:missing_value | |
| 8 | Echo intensity, relative | Echo int rel | cts | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) | |
| 9 | Pings, averaged to a double ensemble value | Pings per ens | # | Kopte, Robert | Vessel mounted Acoustic Doppler Current Profiler [38 kHz] (VMADCP-38) |
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:
1741730 data points
Download Data
View dataset as HTML (shows only first 2000 rows)