In March 1985 the U.S. Navy altimeter satellite GEOSAT began generating a new data set with unprecedented spatial and temporal coverage of the global oceans. The satellite carries a radar altimeter that provides a profile of sea level along the satellite groundtrack. Such records enable determination of sea level and its variability, and have application in many areas of geodesy and ocean dynamics. As suggested by the acronym GEOSAT (GEOdetic SATellite), the satellite's primary purpose was improvement of the marine gravity field. Because of the value of this information to the U.S. military, the first 18 months of observations are classified. However, the geodetic mission ended September 30, 1986, and on October 1 a series of maneuvers was begun to alter the orbit to produce sea surface profiles within a few kilometers of previously released SEASAT data tracks. This new orbit has a repeat period of about 17 days, and the mission is now referred to as the GEOSAT Exact Repeat Mission (ERM). The ERM officially became operational November 8, 1986. The contents of the report include the following: The GEOSAT altimeter mission; Geophysical data records - ocean; Geophysical data records - land and ice; Data analysis considerations.
GEOSAT Altimeter Geophysical Data Record User Handbook
1987
35 pages
Report
Keine Angabe
Englisch
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