Krawczyk, Diana W (2025): Multibeam bathymetry processed data (Reson SeaBat 7160 entire dataset) of RV TARAJOQ during cruise TRJQ_2022-05, TRJQ_2023-05, 202310_MB_TRJQ & TRJQ_2024-05, West Greenland shelf [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974763
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Published: 2025-02-20 • DOI registered: 2025-03-21
Abstract:
High-resolution multibeam data were collected with RV Tarajoq (2022-2024) from the West Greenland shelf (Disko region to Melville Bay) as part of the seafloor mapping strategy at the Greenland Climate Research Centre. The goal of the strategy is to map and illustrate geomorphic features on the seafloor, including geohazards and ice-sculpted forms. The prominent giant pockmarks - altogether 42 features - are included in this dataset as shapefile (WGS 84) and labelled according to the pockmark ID (in Figures 3-7 and Table 2) and its corresponding figure (Krawczyk et al., 2025). Data were acquired with hull-mounted Teledyne system SeaBat 7160 operated at frequency 44 kHz. Positioning and movements of the vessel were obtained from the Applanix POS MV Ocean Master receiving data from an Inertial Motion Unit and two Trimble GNSS antennas. The accuracy of the observations is generally within 0.5 to 2 m horizontally and up to 0.03 degrees roll, pitch, and heading of the vessel. The bathymetry data were acquired with Qinsy software, SVP-corrected, and cleaned using Qimera software, and further gridded at 10 x 10 m resolution. Tide correction was not applied.
Supplement to:
Krawczyk, Diana W; Batchelor, C; Sørensen, A; Lowag, J (accepted): Giant pockmarks discovered on the West Greenland shelf. Arctic, Antarctic, and Alpine Research
Project(s):
Modelling Greenland Seafloor (MapHab)
Coverage:
Median Latitude: 70.997053 * Median Longitude: -57.418926 * South-bound Latitude: 69.706000 * West-bound Longitude: -65.341706 * North-bound Latitude: 74.870211 * East-bound Longitude: -54.778000
Date/Time Start: 2022-05-01T00:00:00 * Date/Time End: 2024-06-30T00:00:00
Event(s):
202310_MB_TRJQ_Underway-1 * Latitude: 74.870211 * Longitude: -65.341706 * Date/Time Start: 2023-10-07T00:00:00 * Date/Time End: 2023-10-21T00:00:00 * Campaign: 202310_MB_TRJQ * Basis: Tarajoq * Method/Device: Multibeam echosounder, Reson SeaBat 7160 * Comment: Center coordinates of raster file from dataset https://doi.org/10.1594/PANGAEA.969540
TRJQ_2022-05_Underway-1 * Latitude: 69.706000 * Longitude: -54.778000 * Date/Time Start: 2022-05-01T00:00:00 * Date/Time End: 2022-06-30T00:00:00 * Campaign: TRJQ_2022-05 * Basis: Tarajoq * Method/Device: Multibeam echosounder, Reson SeaBat 7160 * Comment: Center coordinates of raster file from dataset https://doi.org/10.1594/PANGAEA.974763
TRJQ_2023-05_Underway-1 * Latitude: 69.706000 * Longitude: -54.778000 * Date/Time Start: 2023-05-01T00:00:00 * Date/Time End: 2023-06-30T00:00:00 * Campaign: TRJQ_2023-05 * Basis: Tarajoq * Method/Device: Multibeam echosounder, Reson SeaBat 7160 * Comment: Center coordinates of raster file from dataset https://doi.org/10.1594/PANGAEA.974763
Comment:
These data should not be used for navigational purposes.
Acknowledgements:
Ship time funding was obtained from the Dansk Center for Havforskning (Projects no. 2021-2, 2023-04), Greenland Research Council, Nordic Council of Ministers ((256)-2023-Melville Bay), and the Greenland Institute of Natural Resources.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Krawczyk, Diana W | |||
| 2 | Raster cell size | Raster cell size | Krawczyk, Diana W | Extracted from file | ||
| 3 | File content | Content | Krawczyk, Diana W | |||
| 4 | Vertical datum | Vertical datum | Krawczyk, Diana W | |||
| 5 | Horizontal datum | Horizontal datum | Krawczyk, Diana W | Extracted from file | ||
| 6 | Horizontal datum, projection stored in file | Horizontal datum in file | Krawczyk, Diana W | Extracted from file | ||
| 7 | Longitude, westbound | Longitude west | Krawczyk, Diana W | Extracted from file | ||
| 8 | Longitude, eastbound | Longitude east | Krawczyk, Diana W | Extracted from file | ||
| 9 | Latitude, southbound | Latitude south | Krawczyk, Diana W | Extracted from file | ||
| 10 | Latitude, northbound | Latitude north | Krawczyk, Diana W | Extracted from file | ||
| 11 | UTM Zone, Universal Transverse Mercator | UTM Zone | Krawczyk, Diana W | Extracted from file | ||
| 12 | UTM Easting, Universal Transverse Mercator | UTM east | m | Krawczyk, Diana W | Extracted from file | westbound |
| 13 | UTM Easting, Universal Transverse Mercator | UTM east | m | Krawczyk, Diana W | Extracted from file | eastbound |
| 14 | UTM Northing, Universal Transverse Mercator | UTM north | m | Krawczyk, Diana W | Extracted from file | southbound |
| 15 | UTM Northing, Universal Transverse Mercator | UTM north | m | Krawczyk, Diana W | Extracted from file | northbound |
| 16 | Elevation, minimum | Elev min | m a.s.l. | Krawczyk, Diana W | Extracted from file | |
| 17 | Elevation, maximum | Elev max | m a.s.l. | Krawczyk, Diana W | Extracted from file |
Change history:
2025-11-25T11:52:09 – Shapefiles of the giant pockmarks has been added.
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:
31 data points