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Marine Geoid, Gravity, and Bathymetry: An increasingly clear view with satellite altimetry

David McAdoo(1)

(1) NOAA, 1335 East-West Highway, Silver Spring, MD 20910, United States

Abstract

Spaceborne radar altimeters began profiling the ocean surface - albeit intermittently between 1975 and 1991 - over 30 years ago. These altimeter data have afforded the science community a revolutionary and dramatically-improving view of the global marine gravity field - and geoid. These altimetric marine gravity fields have led directly to a greatly improved understanding of global bathymetry and marine tectonics. Over the past 15 of these 30 years, this altimetric profiling has been continuous, starting with ERS-1's launch in 1991 which included the high-resolution ERS-1 geodetic mission (1994-1995) and followed by ERS-2 and Envisat, both of which continue observing today. This retrospective talk chronicles the major progress made, some lessons learned and the significance for earth science.

 

Full paper

 

                 Last modified: 07.10.03