Gaide, Stefanie; Wintersteller, Paul (2020): Multibeam bathymetry processed data (EM 120 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM05/3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.919766
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Abstract:
Swath sonar bathymetry data used for that dataset was recorded during RV MARIA S. MERIAN cruise MSM05/3 using Kongsberg EM 120 multibeam echosounder . The cruise took place between 15.06.2007 and 04.07.2007 in the northwestern Barents Sea. The cruise aimed to investigate the interrelation between hydrosphere, geosphere and climate in the western Greenland coastal waters and the impact to environmental change during the Late Quaternary. For the identification of sedimentary basins the multibeam echosounder and the new parametric echosounder PARASOUND DS3 were used. In addition, multibeam bathymetric data acquisition has been deployed for the interpretation of the origin of various seabed features. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval.
Description of processed data sources:
During the MSM5/3 cruise, the hull-mounted KONGSBERG EM120 multibeam echosounder (MBES) was utilized to perform bathymetric mapping in middle to deep water depths. Two linear transducer arrays in a Mills Cross configuration transmit acoustic signals of a nominal sonar frequency of 12 kHz. The emission cone has a dimension of 130° across track and 2° along track. With a reception obtained from 191 beams, the actual beam footprint is 2° by 2°. Depending on the roughness of the seafloor, the swath width on a flat bottom is maximum six times the water depth. For further information on the system, consult https://www.km.kongsberg.com/. Throughout the whole cruise generally a swath angle of about 130° was used. Responsible person during this cruise / PI: not stated.
Description of data processing:
Postprocessing and products were conducted by the Seafloor-Imaging & Mapping group of MARUM/FB5, responsible person Paul Wintersteller (seafloor-imaging@marum.de). The open source software MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, https://www.mbari.org/products/research-software/mb-system, 2017) was utilized for this purpose. Tide and a sound velocity profile were applied to the MSM5/3 data; there were no corrections for roll, pitch and heave. Using Mbeditviz, artefacts were cleaned manually. NetCDF (GMT) grids of the edited data as well as statistics were created with mbgrid. The published bathymetric EM120 grid of the cruise MSM5/3 has a resolution of 30 m. No total propagated uncertainty (TPU) has been calculated to gather vertical or horizontal accuracy. A higher resolution is, at least partly, achievable. The grid extended with _num represents a raster dataset with the statistical number of beams/depths taken into account to create the depth of the cell. The extended _sd -grid contains the standard deviation for each cell. The DTMs projections are given in Geographic coordinate system Lat/Lon; Geodetic Datum: WGS84. All grids produced are retrievable through the PANGAEA database (www.pangaea.de).
Chief Scientist: Jan Harff
Project(s):
Coverage:
Latitude: 63.976700 * Longitude: -52.088300
Date/Time Start: 2007-06-14T00:00:00 * Date/Time End: 2007-07-04T00:00:00
Event(s):
MSM05/3-track * Latitude Start: 63.976700 * Longitude Start: -52.088300 * Latitude End: 63.976700 * Longitude End: -52.088300 * Date/Time Start: 2007-06-14T00:00:00 * Date/Time End: 2007-07-04T00:00:00 * Campaign: MSM05/3 * Basis: Maria S. Merian * Method/Device: Underway cruise track measurements (CT) * Comment: Nuuk (Greenland) - Nuuk (Greenland)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File name | File name | Wintersteller, Paul | |||
| 2 | File format | File format | Wintersteller, Paul | |||
| 3 | File size | File size | kByte | Wintersteller, Paul | ||
| 4 | Uniform resource locator/link to file | URL file | Wintersteller, Paul |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
12 data points