Krocker, Ralf; Gohl, Karsten (2007): Marine gravimetry along the track of POLARSTERN cruise ANT-XII/4 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.602286
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Related to:
Krocker, Ralf (2008): Korrelation von Gravimetrie und Bathymetrie zur geologischen Interpretation der Eltanin Impaktstruktur im Südpazifik (Correlation of gravimetry and bathymetry for the geologic interpretation of the Eltanin Impact Structure in the South-Pacific). Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 577, 132 pp, https://doi.org/10.2312/BzPM_0577_2008
Other version:
Project(s):
Marine Geophysics @ AWI (AWI_GeoPhy)
Coverage:
Median Latitude: -60.713471 * Median Longitude: -89.898945 * South-bound Latitude: -70.512510 * West-bound Longitude: -98.050240 * North-bound Latitude: -50.138020 * East-bound Longitude: -68.080920
Date/Time Start: 1995-03-23T00:10:00 * Date/Time End: 1995-05-11T22:50:00
Event(s):
PS35/4-track * Latitude Start: -53.144700 * Longitude Start: -70.909100 * Latitude End: -53.144700 * Longitude End: -70.909100 * Date/Time Start: 1995-03-22T12:58:00 * Date/Time End: 1995-05-11T22:51:00 * Campaign: ANT-XII/4 (PS35 06AQANTXII_4) * Basis: Polarstern * Method/Device: Underway cruise track measurements (CT)
Comment:
The gravimetric measurements have been sampled to support geophysical and geological interpretations of Peter I. Island, De Gerlache Seamounts and the Eltanin Impact Area. Gravimetry has also been accomplished to expand existing datasets.
The used gravity sensor was a KSS31 of Bodenseewerk Überlingen, Germany.
The additional measurements for gravimetric datum shift have been executed using a Lacoste & Romberg gravity meter. Referenced gravity fix points are located in Rothera, Base Station (Adelide Island) and Punta Arenas, Centro Administratum del Puerto (Chile).
Positions have been measured by three GPS-antennas, which were installed as a triangle to determine ships orientation and rotation angles as well. Positions have been corrected by SKYFIX provided 'Wide Area Differential GPS' (WADGPS) data. Heading was measured by gyro.
Simple Bouguer anomalies have been calculated by reducing Bouguerplate with density of 2.67 g/cm**3 (and density contrast of 1.64 g/cm**3 respectively). Bathymetry has been sampled with swath sonar system Hydrosweep DS2. Missing data are represented by 999999.0 (gravity) and 0.0 (bathymetry). No further corrections have been accomplished to gravimetric data. Raw data are stored in ASCII format containing a time periode of 24 hours each file.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7127 data points
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