A Comparison Between Satellite Gravity Data (Geosat) and Marine Gravity Data Measured in the Weddell Sea, Antarctica

  • Arnold L. Brodscholl
  • Ute C. Herzfeld
  • David T. Sandwell
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 110)


The objective of this study is the analysis and comparison of gravimetric and bathymetric data from Antarctic Expeditions with R/V POLARSTERN and from satellite altimetry data from the Geosat Geodetic Mission, using methods from geostatistics and geophysical inverse theory. High-resolution gravity and bathymetric maps resulting from geostatistical evaluation of shipboard data reveal detailed structures of the Andenes Explora Escarpment at 10–20° W/70–72° S in the Weddell Sea, Antarctica. The structures of Wegener Canyon and other more prominent features appear with surprisingly good correlation also in the evaluation of Geosat data (which have much lesser resolution but cover larger areas). The good correspondence between the three data types is supported by results from spectral analysis and multivariate geostatistical analysis, indicating high covariation between satellite gravity data and shipboard gravity data and to a lesser extent bathymetric data, down to 20 km wavelength.


Gravity Anomaly Gravity Data Ordinary Kriging Digital Terrain Model Variogram Model 
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Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • Arnold L. Brodscholl
    • 2
  • Ute C. Herzfeld
    • 1
  • David T. Sandwell
    • 1
  1. 1.Scripps Institution of OceanographyUniversity of California San DiegoLa JollaUSA
  2. 2.Alfred Wegener Institute for Polar and Marine ResearchBremerhavenGermany

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