Description: 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.
Global identifier:
Doi(
"10.1594/PANGAEA.997464",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Binary Object",
"Binary Object (File Size)",
"Binary Object (MD5 Hash)",
"Binary Object (Media Type)",
"Elevation, maximum",
"Elevation, minimum",
"File content",
"Horizontal datum",
"Horizontal datum, projection stored in file",
"Latitude, northbound",
"Latitude, southbound",
"Longitude, eastbound",
"Longitude, westbound",
"Number of depth soundings",
"Raster cell size",
"Vertical datum",
],
methods: [
"Extracted from file",
],
},
)
Tags: Vegetation ? Seen ? Vegetationszone ? Deutschland ? Geografische Koordinaten ? Sonar ? Gewässervermessung ? Projektion ? Daten ? Multibeam Echosounder ?
Bounding boxes: 7.2704532° .. 7.2704532° x 50.412962° .. 50.412962°
License: Creative Commons Namensnennung 4.0 (Data access requires registration)
Language: Englisch/English
Modified: 2026-09-21
Last harvest: 23.09.2026 02:00
Time ranges: 2021-09-13 - 2021-09-14
Accessed 1 times.