Contributors:Geersen, Jacob, Klaucke, Ingo, Behrmann, Jan Hinrich, Kopp, Heidrun, Tréhu, Anne M, Reichert, Christian
Abstract: Multibeam bathymetric data were acquired during R/V SONNE Cruises SO104, SO244, and R/V Marcus G. Langseth Cruise MGL1610. The datasets were individually processed and gridded with grid cell sizes of 75 m. For the combined grid, depth information from SO244 was used wherever possible. If no SO244 data were available, MGL1610 data were preferred over SO104 data.
Source: Not Available
Supplemental Information: Not Availble
Coverage: EVENT LABEL: * LATITUDE: -21.000000 * LONGITUDE: -71.000000 * METHOD/DEVICE: Swath bathymetry mapping
Abstract: Not Available
Source: Not Available
Supplemental Information: Bathymetric surveys of cruise MSM20/5 and MSM37 are combined in one grid of North Pond and surroundings, (MAR).
Coverage: EVENT LABEL: * LATITUDE: 23.000000 * LONGITUDE: -46.000000 * LOCATION: North Atlantic * CAMPAIGN: MSM37 * BASIS: Maria S. Merian * METHOD/DEVICE: Multibeam
Abstract: Sustained harmonic tremor signals were recorded by the seismographs of the German Neumayer Base seismological network in western Dronning Maud Land, Antarctica. These tremor episodes, lasting up to 16 hours, were recorded up to 820 kilometers from the source. Their spectra show narrow peaks with fundamental frequencies ranging from 0.5 to 6 hertz, more than 30 integer harmonic overtones, and frequency gliding, resembling volcanic tremor. Frequency-wave number analysis suggested a moving source, which was recognized as iceberg B-09A traveling along the coast of eastern Antarctica. The most probable tremor sources are fluid-flow-induced vibrations inside the iceberg's tunnel/crevasse systems.
Source: Supplement to: Müller, Christian; Schlindwein, Vera; Eckstaller, Alfons; Miller, Heinz (2005): Singing Icebergs. Science, 310(5752), 1299, https://doi.org/10.1126/science.1117145
Supplemental Information: The fundamental frequency is around 0.5 Hz with 30+ harmonic overtones, changing from harmonic to non-harmonic and vice versa (file format: wave).
Coverage: EVENT LABEL: * LATITUDE: -70.500000 * LONGITUDE: -8.000000 * CAMPAIGN: ANT-XXIII/2 * BASIS: Polarstern * METHOD|DEVICE: Iceberg