PANGAEA_992813 Shipboard ADCP current measurements (75 kHz) during RV SONNE cruise SO314 Kopte, Robert; Frank, Martin; Kopp, Heidrun Shipboard ADCP current measurements (75 kHz) during RV SONNE cruise SO314 2026-03-09 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.992813 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 Echo intensity, cleaned Backscatter, relative Pings, averaged to a double ensemble value Percent good pings geoscientificInformation SO314 SO314_0_Underway-1 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 2025-08-18 2025-10-03 Complete -23.235 -14.0581 -132.8503 -74.41730000000001 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

Leobener Str.

Bremen Bremen 28359 Germany online 19315314 data points text/tab-separated-values Frank, Martin; Kopp, Heidrun; Arndt, Iris; Bartels, Thies; Bauer, Benedikt; Berkholz, Martha; Berndt, Janine; Chen, Zhongxing; Crosby, Ani Jang; Dale, Andrew; Dannowski, Anke; Evers, Florian; Fessler, Sebastian; Filbrandt, Christian; Frederichs, Thomas; Friedrich, Annalena; Glock, Nicolaas; Haas, Peter; Hilgenfeldt, Christian; Hofmann, Jannes; Kahler, Merit; Lange, Dietrich; Lippert, Antina; Murray, Kenneth; Raddatz, Jacek; Rohde, Lea; Sange, Oliver; Schätzel, Julia; Schmülling, Bendikt; Siegburg, Melanie; Timm, Christian; Verdurme, Pauline; Warnatz, Julia; Warwel, Arne; Zindorf, Mark (2025): Testing Solid Earth - Climate Connections and Generation of Crust at the Fast-Spreading Southeast Pacific Rise using time series, Cruise No. SO314, 13th August 2025 - 5th October 2025, Pepeete (French Polynesia) - Antofagasta (Chile). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO314, 152 pp, https://doi.org/10.48433/cr_so314 Kopte, Robert; Frank, Martin; Kopp, Heidrun (2026): Shipboard ADCP current measurements (38 kHz) during RV SONNE cruise SO314 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.992815 nc file: ADCP current measurements (75 kHz) during RV SONNE cruise SO314 (2025). https://store.pangaea.de/Publications/Kopte_SO314_75kHz/so_314_vmadcp_75khz.nc Kopte, Robert (2026): Upper-ocean acoustic Doppler current profiler (75kHz-ADCP) underway measurements during SONNE cruise SO314. Institute of Geosciences, Kiel University, https://download.pangaea.de/reference/138265/attachments/so_314_vmadcp_75khz_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

Current velocities of the upper water column along the cruise track of R/V Sonne cruise SO314 were collected by a vessel-mounted 75 kHz RDI Ocean Surveyor ADCP. The ADCP transducer was located at 6.0 m below the water line. The instrument was operated in narrowband mode (WM10) with a bin size of 8.00 m, a blanking distance of 8.00 m, and a total of 100 bins, covering the depth range between 22.0 m and 814.0 m. Attitude data from the ship's motion reference unit were used by the data acquisition software VmDAS internally to convert ADCP beam velocities to geographic coordinates. The Python toolbox OSADCP (version 2.2.0) was used for data post-processing. Acoustic Interferences were identified based on outliers in the ADCP echo intensity data. Echo intensity data were cleaned accordingly and affected velocity cells were flagged to be removed prior ensemble-averaging. The ship's velocity was calculated from position fixes obtained by the Global Navigation Satellite System (GNSS), taking into account lever arms of ADCP transducer and GNSS antenna. Accuracy of the derived water 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 processing included water track calibration of the misalignment angle (-45.2170° +/- 0.7029°) and scale factor (0.9979 +/- 0.0103) of the measured velocities. The velocity data were averaged in time using an average interval of 60 s. Depth cells with ensemble-averaged percent-good values below 25% are marked as 'bad data'. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.992813"!

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/10.48433/cr_so314 SO314 https://doi.org/10.48433/cr_so314 Testing Solid Earth - Climate Connections and Generation of Crust at the Fast-Spreading Southeast Pacific Rise using time series, Cruise No. SO314, 13th August 2025 - 5th October 2025, Pepeete (French Polynesia) - Antofagasta (Chile) https://doi.org/10.5281/zenodo.7022767 SOP 75kHz ADCP aboard of RV Sonne (vessel:sonne:adcp_75khz_647271) https://doi.pangaea.de/10.1594/PANGAEA.992815 Shipboard ADCP current measurements (38 kHz) during RV SONNE cruise SO314 https://helmholtz.software/projects/datahub DataHub https://store.pangaea.de/Publications/Kopte_SO314_75kHz/so_314_vmadcp_75khz.nc nc file: ADCP current measurements (75 kHz) during RV SONNE cruise SO314 https://uol.de/icbm/forschungsplattformen-schiffe/sonne Sonne_2 https://www.allianz-meeresforschung.de/kernbereiche/datenmanagement-und-digitalisierung#unterwegs 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 2026-03-09 2026-03-30