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Sandwell, DT, Ruiz MB.  1992.  Along-Track Gravity-Anomalies from Geostat and Seasat Altimetry - Gebco Overlays. Marine Geophysical Researches. 14:165-205.   10.1007/bf01270629   AbstractWebsite

To provide easy access to the large number of Seastat and Geosat altimeter observations collected over the last decade, we have plotted these satellite altimeter profiles as overlays to the General Bathymetric Chart of the Oceans (GEBCO). Each of the 32 overlays displays along-track gravity anomalies for either ascending (southeast to northwest) or descending (northeast to southwest) altimeter passes. Where Seasat and Geosat profiles coincide, only the more accurate Geosat profiles were plotted. In poorly charted southern ocean areas, satellite altimeter profiles reveal many previously undetected features of the seafloor.