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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2021
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| Online Access: | https://doi.org/10.1594/PANGAEA.932317 |
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| _version_ | 1867170108312387584 |
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| author | Wenau, Stefan Spieß, Volkhard Zabel, Matthias |
| author_facet | Wenau, Stefan Spieß, Volkhard Zabel, Matthias |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_932317 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seismic data sets from the Namibian continental slope acquired on RV METEOR & RV MARIA S. MERIAN during cruise M49/1 & MSM19/1c Wenau, Stefan Spieß, Volkhard Zabel, Matthias Bathymetry; Binary Object; Binary Object (File Size); Binary Object (Media Type); Continental Slope; Event label; File content; GeoB01-001; GeoB01-003; GeoB11-115; GeoB11-121; GeoB11-123; LATITUDE; LONGITUDE; M49/1; Maria S. Merian; MCSEIS; Meteor (1986); MSM19/1c; multichannel reflection seismics; Multichannel seismics; Namibia; seafloor depressions; South Atlantic Ocean; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator; UTM Zone, Universal Transverse Mercator 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. |
| title | Seismic data sets from the Namibian continental slope acquired on RV METEOR & RV MARIA S. MERIAN during cruise M49/1 & MSM19/1c |
| topic | Bathymetry; Binary Object; Binary Object (File Size); Binary Object (Media Type); Continental Slope; Event label; File content; GeoB01-001; GeoB01-003; GeoB11-115; GeoB11-121; GeoB11-123; LATITUDE; LONGITUDE; M49/1; Maria S. Merian; MCSEIS; Meteor (1986); MSM19/1c; multichannel reflection seismics; Multichannel seismics; Namibia; seafloor depressions; South Atlantic Ocean; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator; UTM Zone, Universal Transverse Mercator |
| url | https://doi.org/10.1594/PANGAEA.932317 |