Satellite-derived gravity having an impact on marine exploration
2001; Society of Exploration Geophysicists; Volume: 20; Issue: 8 Linguagem: Inglês
10.1190/1.1487298
ISSN1938-3789
AutoresJ.D. Fairhead, Chris Green, Mark E. Odegard,
Tópico(s)Inertial Sensor and Navigation
ResumoConverting sea-surface height variations, derived from satellite altimetry, to free air gravity is not new. In the early 1980s William Haxby (Lamont Doherty Geological Observatory) produced the first global marine gravity map from SeaSat satellite altimeter data using interorbital track spacing of about 180 km. Haxby's map had a significant impact on plate tectonic theory because marine free-air gravity data were able for the first time to uniformly image the tectonic fabric of the earth's oceanic crust. Since that time, much effort has been applied to improving satellite-derived gravity resolution. A major advance occurred in 1995, when the altimeter data from Geodetic Missions (GM) of GeoSat and ERS-1 satellites were released. Table 1 gives details of these satellites.
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