Albers, Stijn; Vandorpe, Thomas; De Batist, Marc: Multibeam bathymetry processed data (NORBIT iWBMS entire dataset) from 2021, Laacher See, Germany [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.997464 (dataset in review)
Abstract:
This dataset contains a processed bathymetric data of the volcanic crater lake Laacher See in Germany recorded on 13-14 September 2021, acquired for the purpose of describing the lake sedimentary infill and volcanic degassing processes occurring in the crater. It has a coverage of 2.81 km², which corresponds to ca. 84% of the total lake surface area. The nearshore zone was not mapped due to vegetation growth limiting the data quality. Depths are expressed in meters below lake level, ranging from 2.4 m to 50.5 m. The bathymetric data was acquired using a Norbit WBMSe Wideband Multibeam Sonar from the Flanders Marine Institute (Vlaams Instituut voor de Zee, VLIZ) and the system was operated at a source frequency of 400 kHz with a maximum swath angle of 150°, transmitting 512 beams with a beam width of 0.9° x 1.9°. Sound velocity profiles were collected throughout the survey to account for temporal variations in water-column sound velocity. Processing of the raw data was done using Qimera 2.5.1 (QPS) and included correction for pitch, roll and heading offsets during acquisition, and manual removal of artefacts such as gas bubbles, vegetation and inconsistent soundings in overlapping swaths. From the processed data, a bathymetric grid with a ~1m cell size was constructed.
Supplement to:
Albers, Stijn (in review): Post-eruptive structure and sedimentary evolution of the Laacher See crater (Germany) revealed by high-resolution seismic stratigraphy and sediment cores. Sedimentary Geology
Coverage:
Latitude: 50.412962 * Longitude: 7.270453
Date/Time Start: 2021-09-13T09:38:23 * Date/Time End: 2021-09-14T10:55:21
Event(s):
Laacher_See_Survey * Latitude: 50.412962 * Longitude: 7.270453 * Date/Time Start: 2021-09-13T09:38:23 * Date/Time End: 2021-09-14T10:55:21 * Method/Device: Multibeam echo sounder, Norbit iWBMS * Comment: Event shows center location of raster file
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Albers, Stijn | |||
| 2 | Binary Object (Media Type) | Binary (Type) | Albers, Stijn | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Albers, Stijn | ||
| 4 | Binary Object (MD5 Hash) | Binary (Hash) | Albers, Stijn | |||
| 5 | Raster cell size | Raster cell size | Albers, Stijn | Extracted from file | ||
| 6 | File content | Content | Albers, Stijn | |||
| 7 | Vertical datum | Vertical datum | Albers, Stijn | |||
| 8 | Horizontal datum | Horizontal datum | Albers, Stijn | Extracted from file | ||
| 9 | Horizontal datum, projection stored in file | Horizontal datum in file | Albers, Stijn | Extracted from file | ||
| 10 | Longitude, westbound | Longitude west | Albers, Stijn | Extracted from file | ||
| 11 | Longitude, eastbound | Longitude east | Albers, Stijn | Extracted from file | ||
| 12 | Latitude, southbound | Latitude south | Albers, Stijn | Extracted from file | ||
| 13 | Latitude, northbound | Latitude north | Albers, Stijn | Extracted from file | ||
| 14 | Elevation, minimum | Elev min | m a.s.l. | Albers, Stijn | Extracted from file | |
| 15 | Elevation, maximum | Elev max | m a.s.l. | Albers, Stijn | Extracted from file | |
| 16 | Number of depth soundings | Soundings | # | Albers, Stijn | Extracted from file |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
22 data points