Wenau, Stefan; Spieß, Volkhard; Zabel, Matthias (2021): Multibeam bathymetry processed data (EM 120 echosounder dataset compilation) of RV METEOR & RV MARIA S. MERIAN during cruise M76/1 & MSM19/1c, Namibian continental slope [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.932434
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Published: 2021-06-09 • DOI registered: 2021-07-12
Abstract:
The data contain bathymetric data from the Namibia continental slope. The data were acquired on R/V Meteor research expeditions M76/1 in 2008, and R/V Maria S. Merian expedition MSM19/1c in 2011. The purpose of the data was the exploration of the Namibian continental slope and espressially the investigation of large seafloor depressions. The bathymetric data were acquired with the 191-beam 12 kHz Kongsberg EM120 system. The data were processed using the public software package MBSystems. The loaded data were cleaned semi-automatically and manually, removing outliers and other erroneous data. Initial velocity fields were adjusted to remove artifacts from the data. Gridding was done in 10x10 m grid cells for the MSM19-1c dataset and 50x50 m for the M76 dataset using the Gaussian Weighted Mean algorithm.
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
Coverage:
Median Latitude: -25.682450 * Median Longitude: 15.485675 * South-bound Latitude: -33.906800 * West-bound Longitude: 14.503000 * North-bound Latitude: -22.941000 * East-bound Longitude: 18.433700
Date/Time Start: 2008-04-12T00:00:00 * Date/Time End: 2011-10-21T00:00:00
Event(s):
M76/1a_0_Underway-1 * Latitude Start: -33.906800 * Longitude Start: 18.433700 * Latitude End: -22.941000 * Longitude End: 14.503000 * Date/Time Start: 2008-04-12T00:00:00 * Date/Time End: 2008-04-25T00:00:00 * Location: off Namibia * Campaign: M76/1a * Basis: Meteor (1986) * Method/Device: Swath-mapping system Simrad EM-120 (Kongsberg Maritime AS)
MSM19/1c_0_Underway-1 * Latitude Start: -22.941000 * Longitude Start: 14.503000 * Latitude End: -22.941000 * Longitude End: 14.503000 * Date/Time Start: 2011-10-12T00:00:00 * Date/Time End: 2011-10-21T00:00:00 * Campaign: MSM19/1c * Basis: Maria S. Merian * Method/Device: Swath-mapping system Simrad EM-120 (Kongsberg Maritime AS)
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 | Raster cell size | Raster cell size | Wenau, Stefan | |||
| 6 | File content | Content | Wenau, Stefan | |||
| 7 | Vertical datum | Vertical datum | Wenau, Stefan | |||
| 8 | Horizontal datum | Horizontal datum | Wenau, Stefan | |||
| 9 | Longitude, westbound | Longitude west | Wenau, Stefan | |||
| 10 | Longitude, eastbound | Longitude east | Wenau, Stefan | |||
| 11 | Latitude, southbound | Latitude south | Wenau, Stefan | |||
| 12 | Latitude, northbound | Latitude north | Wenau, Stefan |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
32 data points
Data
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| 1 Event | 2 Binary | 3 Binary (Type) | 4 Binary (Size) [Bytes] | 5 Raster cell size | 6 Content | 7 Vertical datum | 8 Horizontal datum | 9 Longitude west | 10 Longitude east | 11 Latitude south | 12 Latitude north |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M76/1a_0_Underway-1 | Bathymetry_M76-1a_Fig4_2_GEOTIFF_UTM.tif | image/tiff | 83.8 MBytes | 15m | Colored georeferenced image of bathymetric data of the Namibian continental slope (M76/1), GeoTIFF raster, Float32 | WGS 84 / UTM zone 33S , EPSG:32733 | 13.002513 | 14.628161 | -28.37137600 | -25.49817600 | |
| MSM19/1c_0_Underway-1 | Bathymetry_MSM19-1c_Fig4_1_GEOTIFF_UTM.tif | image/tiff | 35.4 MBytes | 42,5m | Colored georeferenced image of bathymetric data of the Namibian continental slope (MSM19/1c), GeoTIFF raster, Float32 | WGS 84 / UTM zone 33S , EPSG:32733 | 13.984945 | 14.354238 | -28.13371500 | -27.74919400 | |
| M76/1a_0_Underway-1 | M76-1a_Bathy_South.xyz | text/plain | 34.8 MBytes | Longitude, latitude, elevation data (xyz) of the Namibian continental slope (M76/1) / / negative values in meters for depth measurements | MSL (mean sea level) | 13.002513 | 14.628161 | -28.37060331 | -25.48560331 | ||
| MSM19/1c_0_Underway-1 | MSM19-1c_NGC_Bathymetry.grd | application/x-netcdf | 115.7 MBytes | 10m | Raster image of bathymetric data of the Namibian continental slope (MSM19/1c) / negative values in meters for depth measurements | MSL (mean sea level) | WGS 84, EPSG:4326 | 13.984945 | 14.354238 | -28.13657000 | -27.51981400 |