Grevemeyer, Ingo; Zhou, Fei; Hübscher, Christian (2026): Marine magnetic data of profile SO305/2_9-3 over the Argo transform fault at the Central Indian Ocean near 13°30'S during SONNE cruise SO305/2 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993199 (DOI registration in progress)
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Published: 2026-03-24
Abstract:
During the cruise SO305/2 of the German research vessel SONNE, we recorded densely spaced magnetic field measurement over the Argo transform fault offsetting the Central Indian Ridge near 13°30'S. The total magnetic field was measured using two SeaSpy magnetometers which were towed at 500 m and 575 m, respectively, behind the stern of the ship, sampling the data continuously at 1 Hz. The ships navigation was corrected to match the position of the sensors towed behind the vessel and data were resampled at 30 s. Uncorrected total field magnetic data are available in text/ascii format.
Related to:
Waniek, Joanna J; Prien, Ralf D; Reineccius, Janika; Serafim, Tassiana S G; Osterholz, Helena; Fensky, Ute; Fechtel, Christin; Floth-Peterson, Mareike; Mairon, Tabea N L; Witt, Kendra; Dellwig, Olaf; Köhler, Anne; Dierken, Madleen; Kolbe, Martin; Jeschek, Jenny; Gaye, Birgit; Leonhardt, Jonas; Metzke, Marc; Devey, Colin W; Bauer, Benedikt; Kreh, Janina; Kremin, Isabel; Zhou, Fei; Ziolkowski, Tobias; Xie, Zhiyong; Mi, Lijie (2024): Emerging Pollutants and Microplastic Abundance in Surface Waters of Indian Ocean, High-resolution seafloor Mapping and Magnetic field characterization of the Argo transform fault at the Central Indian Ridge, Cruise No. SO305/2, 16.07.2024-05.08.2024, Singapore (Singapore) - Port Louis (Mauritius). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO305/2, 33 pp, https://doi.org/10.48433/cr_so305_2
Funding:
Federal Ministry of Research, Technology and Space (BMFTR), grant/award no. BMFTR 03G0305TD: M2ArgoT
Coverage:
Median Latitude: -13.264725 * Median Longitude: 66.883210 * South-bound Latitude: -13.592220 * West-bound Longitude: 66.559700 * North-bound Latitude: -12.937230 * East-bound Longitude: 67.206720
Date/Time Start: 2024-07-29T09:57:31 * Date/Time End: 2024-07-31T15:09:09
Minimum Elevation: -3082.6 m * Maximum Elevation: -2512.3 m
Event(s):
SO305/2_9-3 * Latitude Start: -12.937230 * Longitude Start: 67.206720 * Latitude End: -13.592220 * Longitude End: 66.559700 * Date/Time Start: 2024-07-29T10:15:35 * Date/Time End: 2024-07-31T02:10:36 * Elevation Start: -3082.6 m * Elevation End: -2512.3 m * Campaign: SO305/2 (E‐POLIO‐T; M2Argo‐T) * Basis: Sonne_2 * Method/Device: Magnetometer (MAG)
Comment:
Two magnetometers were towed behind the RV SONNE. The first sensor was 500 m behind the stern and the second sensor at 575 m. The magnetometers themself did not record geographical coordiates. Hence the GPS position of the vessel was used to assess their location. The GPS, at the center of the vessel, was 60 m away from the stern of the vessel and therefore 560 m and 635 m away from the first and second sensor, respectively. The coordinates of the sensors were then calclated at ~30s intervals an at the same time stamp.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Grevemeyer, Ingo | Geocode | ||
| 2 | LONGITUDE | Longitude | Grevemeyer, Ingo | Geocode – Sensor 1 | ||
| 3 | LATITUDE | Latitude | Grevemeyer, Ingo | Geocode – Sensor 1 | ||
| 4 | Magnetic field, total intensity | F | nT | Grevemeyer, Ingo | Magnetometer, SeaSPY | Sensor 1 |
| 5 | LONGITUDE | Longitude | Grevemeyer, Ingo | Geocode – Sensor 2 | ||
| 6 | LATITUDE | Latitude | Grevemeyer, Ingo | Geocode – Sensor 2 | ||
| 7 | Magnetic field, total intensity | F | nT | Grevemeyer, Ingo | Magnetometer, SeaSPY | Sensor 2 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
10140 data points
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