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Jegen, Marion; Geissler, Wolfram H; Ritter, Oliver; Weckmann, Ute (2021): Magnetotelluric impedances of marine measurements conducted during Maria S. Merian cruise MSM17/1 and MSM17/2 in 2011, Walvis Ridge, Namibian Margin. PANGAEA, https://doi.org/10.1594/PANGAEA.931440

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Abstract:
The magnetotelluric impedance tensor elements and errors were calculated with the software BIRRP (Chave &Thomson, 2004; doi:10.1111/j.1365-246X.2004.02203.x). Magnetotelluric measurements were conducted from December 2010 to January 2011 at the Walvis Ridge, offshore Namibia. Coordinates of the MT stations are included in the EDI files and cover an area at ~8°E - 12°E, ~18°S-22°S. Station deployment and recovery was conducted on the two cruises MSM17/1 and MSM17/2 on German research vessel Maria S. Merian as part of the SPP1375 priority program SAMPLE. The SAMPLE project focused on the processes linked to continental margin formation.
Keyword(s):
magnetotellurics; marine; Namibia; South Atlantic
Supplement to:
Franz, Gesa; Moorkamp, Max; Jegen, Marion; Berndt, Christian; Rabbel, Wolfgang (2021): Comparison of Different Coupling Methods for Joint Inversion of Geophysical Data: A Case Study for the Namibian Continental Margin. Journal of Geophysical Research: Solid Earth, 126(12), https://doi.org/10.1029/2021JB022092
Project(s):
Priority Programme 1375 SAMPLE: South Atlantic Margin Processes and Links with Onshore Evolution (SPP1375)
Funding:
German Research Foundation (DFG), grant/award no. 61089689: Priority Programme 1375 SAMPLE: South Atlantic Margin Processes and Links with Onshore Evolution
Coverage:
Median Latitude: -19.776339 * Median Longitude: 10.621271 * South-bound Latitude: -21.941000 * West-bound Longitude: 8.736670 * North-bound Latitude: -18.136833 * East-bound Longitude: 11.831500
Date/Time Start: 2010-12-04T15:34:00 * Date/Time End: 2011-01-06T14:28:59
Minimum Elevation: -4211.9 m * Maximum Elevation: -333.5 m
Event(s):
MSM17/1_1085-2 (OBMT 01) * Latitude: -18.136833 * Longitude: 9.938167 * Date/Time: 2010-12-04T15:34:00 * Elevation: -4211.9 m * Recovery: MSM17/2_28-1 * Location: South Atlantic Ocean * Campaign: MSM17/1 * Basis: Maria S. Merian * Method/Device: Ocean Bottom EM / MT (OBMT) * Comment: Deployment
MSM17/1_1089-1 (OBMT 02) * Latitude: -18.344500 * Longitude: 10.038333 * Date/Time: 2010-12-04T19:39:00 * Elevation: -4107.9 m * Recovery: MSM17/2_27-1 * Location: South Atlantic Ocean * Campaign: MSM17/1 * Basis: Maria S. Merian * Method/Device: Ocean Bottom EM / MT (OBMT) * Comment: Deployment
MSM17/1_1092-2 (OBMT 03) * Latitude: -18.518833 * Longitude: 10.123667 * Date/Time: 2010-12-04T21:23:00 * Elevation: -4035.1 m * Recovery: MSM17/2_26-1 * Location: South Atlantic Ocean * Campaign: MSM17/1 * Basis: Maria S. Merian * Method/Device: Ocean Bottom EM / MT (OBMT) * Comment: Deployment
Comment:
EDI files are a standard technical format for Magnetotelluric data as defined by the SEG in 1988: https://www.seg.org/Portals/0/SEG/News%20and%20Resources/Technical%20Standards/seg_mt_emap_1987.pdf
This ascii files can be read with any text editor.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventJegen, MarionDeployment
2Optional event labelEvent 2Jegen, MarionDeployment
3Station labelStationJegen, MarionRecovery
4Date/time startDate/time startJegen, MarionDeployment
5Date/time endDate/time endJegen, MarionRecovery
6Binary ObjectBinaryJegen, MarionBIRRP software
7Binary Object (File Size)Binary (Size)BytesJegen, MarionBIRRP software
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
128 data points

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