PANGAEA_946319 ADCP current measurements (75 kHz) during RV SONNE cruise SO289 Achterberg, Eric Pieter; Kopte, Robert; Galley, Christopher G ADCP current measurements (75 kHz) during RV SONNE cruise SO289 2022-07-13 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.946319 Investigator Robert Kopte robert.kopte@ifg.uni-kiel.de Earth Science DATE/TIME LATITUDE LONGITUDE DEPTH, water Current velocity, east-west Current velocity, north-south Quality flag, current velocity Echo intensity, relative Pings, averaged to a double ensemble value geoscientificInformation SO289 SO289_0_Underway-1 SO289_0_Underway-5 Vessel mounted Acoustic Doppler Current Profiler [75 kHz] Vessel mounted Acoustic Doppler Current Profiler [75 kHz] Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) Sonne_2 2022-02-17 2022-04-03 Complete -36.6312 -25.7166 171.9973 -71.72910000000002 22.0 m (DEPTH, water) 814.0 m (DEPTH, water) DAM_Underway DAM Underway Research Data DataHub DataHub Earth and Environment of the Helmholtz Association unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 11688975 data points text/tab-separated-values nc file: ADCP current measurements (75 kHz) during RV SONNE cruise 289 [dataset]. https://download.pangaea.de/reference/114674/attachments/so_289_vmadcp_75khz_01.nc Kopte, Robert (2022): Upper-ocean acoustic Doppler current profiler (75kHz-ADCP) underway measurements during Sonne cruise SO_289 - Data Processing Report. Institute of Geosciences, Kiel University, https://download.pangaea.de/reference/114673/attachments/so_289_vmadcp_75khz_01_proc_report.pdf Kopte, Robert; Betz, Maximilian; Anselm, Norbert (2022): SOP 75kHz ADCP aboard of RV Sonne (vessel:sonne:adcp_75khz_647271). Zenodo, https://doi.org/10.5281/zenodo.7022767

Upper-ocean velocities along the cruise track of RV SONNE cruise SO289 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 1.43 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 (-0.13° +/- 0.3581°) and scale factor (0.9969 +/- 0.0071) of the Ocean Surveyor signal. The average interval was set to 120 s. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.946319"! ** 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.

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.5281/zenodo.7022767 SOP 75kHz ADCP aboard of RV Sonne (vessel:sonne:adcp_75khz_647271) https://helmholtz.software/projects/datahub DataHub https://uol.de/icbm/forschungsplattformen-schiffe/sonne Sonne_2 https://www.allianz-meeresforschung.de/en/activities/data-management-and-digitalisation/underway-research-data DAM_Underway https://www.seadatanet.org/content/download/596/file/SeaDataNet_QC_procedures_V2_%28May_2010%29.pdf Seadatanet flag: Data quality control procedures according to SeaDataNet (2010) DIF 9.4 2022-07-13 2026-07-22