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Vergleichende geostatistische Analyse von ETOPO2v2c-, Gravimetrie- und Fächerecholot-Daten für Fragestellungen zur Bathymetrie und submarine Geomorphologie am Beispiel des Scotia Meeres

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Damaske, D. (2008): Vergleichende geostatistische Analyse von ETOPO2v2c-, Gravimetrie- und Fächerecholot-Daten für Fragestellungen zur Bathymetrie und submarine Geomorphologie am Beispiel des Scotia Meeres , Bachelor thesis, Freie Universität Berlin.
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Abstract:

The seafloor of the world oceans is largely unknown. Detailed measurements of the submarine topography are costly and require a lot of time. Satellite measurements provide a low-cost and fast mean of aquiring the nessaray data. However, the satellite-derived bathymetry is of less accuracy. To value the predicted bathymetry regarding the submarine geomorphology and for the bathymetric science, predicted bathymetry (ETOPO2v2c) is compared and correlated to satellite altimetry based gravity data and multibeam echo sounder data from the central Scotia Sea (Antarctica). This is achieved by transferring the raw data with interpolation methods into a raster to apply the statistical analysis “moving window”. The results show that compared to multibeam echo sounder data the predicted bathymetry is not sufficiently accurate to be applied in submarine geomorphology when considering the submarine slope angle. However, geological interpretation can be assited by comparing multibeam echo sounder data with predicted bathymetry. The correlation of gravity and multibeam echo sounder data provides a relative measure of submarine sediment thickness. Within the scope of this thesis the analyses and discussed topoics cannot be fully adressed, but need further comprehensive studies to support its findings to be applied in general bathymetry-related scientific work.

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