Geissler, Wolfram H (2019): MSM24 raw data of EM122 multibeam echosounder (bathymetry & beam time series) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.898378
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Multibeam echosounder (MBES) data recorded during RV MARIA S. MERIAN cruise MSM24 between 27.12.2012 and 21.01.2013 around Tristan da Cunha. The cruise MSM24 aimed to answer the question whether Tristan da Cunha classifies as a hot-spot with deep reaching asthenospheric anomalies and initiated the opening of the South Atlantic or whether Tristan da Cunha is a consequence of tectonic processes associated with more shallow anomalies. Another goal was to retrieve 26 ocean-bottom magnetotelluric stations (OBEM) and 22 broadband ocean-bottom seismometers (BBOBS) as well as two seismic and one magnetotelluric (MT) land stations from the uninhabited Nightingale Island. CI Citation: Paul Wintersteller (seafloor-imaging@marum.de) as responsible party for bathymetry raw data ingest and approval. Description of the data source: During the RV MARIA S. MERIAN cruise MSM24 the Kongsberg EM122 multibeam echosounder with a nominal sounding frequency of 11.5 to 12.5 kHz was utilized. 288 beams (and up to 864 soundings in equidistant and dual swath mode) are formed for each ping with a 2°(Tx)/2°(Rx) footprint while the seafloor is detected using amplitude and phase information for each beam sounding. For further information consult https://www.km.kongsberg.com/. The tracks were planned parallel to the tracks of the MSM20/2 cruise due to the decision to receive bathymetric information about the area of the different BBOBS and OBEM stations. In addition, bathymetric gaps in-between the old survey area around Tristan da Cunha were closed. A general swath width of 55° was used wider swath widths were tested occasionally, however, the data quality decreased dramatically for the outer beams, most probably due to the high ship speed of 12 to 13 kn. Due to some problems with the graphic card the corresponding multibeam software broke down occasionally. Responsible person during this cruise: Irena Schulten.
Chief Scientist: Wolfram H. Geissler
Further details:
Geissler, Wolfram H (2013): Raw data of continuous VM-ADCP (vessel-mounted Acoustic Doppler Current Profiler) profile during Maria S. Merian cruise MSM24 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.823160
Geissler, Wolfram H (2014): Electromagnetic, gravimetric and seismic measurements to investigate the Tristan da Cunha hot spot and its role in the opening of the South Atlantic Ocean (MARKE) - Cruise No. MSM24 - December 27, 2012 - January 21, 2013 - Walvis Bay (Namibia) - Cape Town (South Africa). MARIA S. MERIAN-Berichte, DFG-Senatskommission für Ozeanographie, MSM24, 56 pp, https://doi.org/10.2312/cr_msm24
Project(s):
Coverage:
Median Latitude: -28.423900 * Median Longitude: 16.468350 * South-bound Latitude: -33.906800 * West-bound Longitude: 14.503000 * North-bound Latitude: -22.941000 * East-bound Longitude: 18.433700
Date/Time Start: 2012-12-27T00:00:00 * Date/Time End: 2013-01-21T00:00:00
Event(s):
MSM24-track * Latitude Start: -22.941000 * Longitude Start: 14.503000 * Latitude End: -33.906800 * Longitude End: 18.433700 * Date/Time Start: 2012-12-27T00:00:00 * Date/Time End: 2013-01-21T00:00:00 * Campaign: MSM24 * Basis: Maria S. Merian * Method/Device: Underway cruise track measurements (CT) * Comment: Walvis Bay - Cape Town
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)
Status:
Curation Level: Basic curation (CurationLevelB) * Processing Level: PANGAEA data processing level 1 (ProcLevel1)
Size:
3684 data points
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