Wenau, Stefan; Spieß, Volkhard; Zabel, Matthias (2021): Seismic data sets from the Namibian continental slope acquired on RV METEOR & RV MARIA S. MERIAN during cruise M49/1 & MSM19/1c [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932317
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Abstract:
The data contain processed multichannel seismic data from the Namibia continental slope. Multichannel seismic data was acquired on R/V Meteor expedition M49/1 and on R/V Maria S. Merian expedition MSM19/1c using the high-resolution seismic acquisition system of the Department of Geosciences at the University of Bremen, Germany. During cruise M49/1, two Sercel GI-Guns were employed alternatingly, one with 2 x 1.7 L volume and another with 2 x 0.4 L chamber volume. The Syntron streamer used for recording consisted of a 600 m active section with 48 channels at 12.5 m spacing. During cruise MSM19/1c, the multichannel seismic data was acquired using a Sercel GI-Gun with a chamber volume of 2 x 1.7 L as seismic source. The recording unit consisted of a 100-m 16-channel Teledyne streamer with a channel spacing of 6.25 m. Shot interval was 10 s resulting in shot distances of ~25 m at a ship speed of ~5 kn. The employed seismic sources yield a frequency bandwidth of 30-400 Hz with a dominant frequency of ~150 Hz, resulting in a vertical resolution of the processed data (1/4 – 1/2 signal wavelength λ) of 2.5 - 5 m. Seismic processing was carried out with the commercial Schlumberger Vista Seismic Processing Software and interpretation with the IHS Kingdom Software package. The data were band-pass filtered, stacked and migrated with an emphasis on high resolution imaging and noise reduction. Velocity fields were picked interactively for NMO-correction and migration. CMP bin distance was set at 5 m.
Keyword(s):
Related to:
Wenau, Stefan; Spieß, Volkhard; Zabel, Matthias (2021): Giant Seafloor Depressions Caused by Slope Failures and Bottom Currents on the Namibia Continental Margin. Geochemistry, Geophysics, Geosystems, 22(7), https://doi.org/10.1029/2020GC009548
Funding:
Coverage:
Median Latitude: -28.195050 * Median Longitude: 14.062523 * South-bound Latitude: -29.616670 * West-bound Longitude: 13.103170 * North-bound Latitude: -27.201330 * East-bound Longitude: 14.461670
Date/Time Start: 2001-01-06T11:50:00 * Date/Time End: 2011-10-19T13:12:00
Event(s):
GeoB01-001 * Latitude Start: -29.616670 * Longitude Start: 13.555000 * Latitude End: -29.110000 * Longitude End: 14.461670 * Date/Time Start: 2001-01-06T11:50:00 * Date/Time End: 2001-01-06T20:31:00 * Location: South Atlantic Ocean * Campaign: M49/1 * Basis: Meteor (1986) * Method/Device: Multichannel seismics (MCSEIS)
GeoB01-003 * Latitude Start: -28.267670 * Longitude Start: 13.103170 * Latitude End: -27.201330 * Longitude End: 14.384830 * Date/Time Start: 2001-01-07T10:12:00 * Date/Time End: 2001-01-08T00:39:00 * Location: South Atlantic Ocean * Campaign: M49/1 * Basis: Meteor (1986) * Method/Device: Multichannel seismics (MCSEIS)
GeoB11-115 * Latitude Start: -27.892230 * Longitude Start: 14.142470 * Latitude End: -27.936180 * Longitude End: 14.274610 * Date/Time Start: 2011-10-18T18:33:00 * Date/Time End: 2011-10-18T20:15:00 * Campaign: MSM19/1c * Basis: Maria S. Merian * Method/Device: Multichannel seismics (MCSEIS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Wenau, Stefan | |||
| 2 | Binary Object | Binary | Wenau, Stefan | |||
| 3 | Binary Object (Media Type) | Binary (Type) | Wenau, Stefan | |||
| 4 | Binary Object (File Size) | Binary (Size) | Bytes | Wenau, Stefan | ||
| 5 | File content | Content | Wenau, Stefan | |||
| 6 | LATITUDE | Latitude | Wenau, Stefan | Geocode – Start | ||
| 7 | LONGITUDE | Longitude | Wenau, Stefan | Geocode – Start | ||
| 8 | LATITUDE | Latitude | Wenau, Stefan | Geocode – End | ||
| 9 | LONGITUDE | Longitude | Wenau, Stefan | Geocode – End | ||
| 10 | UTM Zone, Universal Transverse Mercator | UTM Zone | Wenau, Stefan | |||
| 11 | UTM Easting, Universal Transverse Mercator | UTM east | m | Wenau, Stefan | Start | |
| 12 | UTM Northing, Universal Transverse Mercator | UTM north | m | Wenau, Stefan | Start | |
| 13 | UTM Easting, Universal Transverse Mercator | UTM east | m | Wenau, Stefan | End | |
| 14 | UTM Northing, Universal Transverse Mercator | UTM north | m | Wenau, Stefan | End |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
70 data points