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Gravity anomaly and geoid undulation results in local areas from GEOS-3 altimeter dataThe adjusted GEOS-3 altimeter data, taken as averages within a data frame, have been used to construct free air anomaly and geoid undulation profiles and maps in areas of geophysical interest. Profiles were constructed across the Philippine Trench (at a latitude of 6 deg) and across the Bonin Trench (at a latitude of 28 deg). In the latter case an anomaly variation of 443 mgals in 143 km was derived from the altimeter data. These variations agreed reasonably with terrestrial estimates, considering the predicted point accuracy was about + or - 27 mgals. An area over the Patton Sea mounts was also investigated with the altimeter anomaly field agreeing well with the terrestrial data except for the point directly over the top of the sea mount. It is concluded that the GEOS-3 altimeter data is valuable not only for determining 5 deg and 1 deg x 1 deg mean anomalies, but also can be used to describe more local anomaly variations.
Document ID
19800053558
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Rapp, R. H.
(Ohio State University Columbus, Ohio, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Geophysics
Meeting Information
Meeting: The use of artificial satellites for geodesy and geodynamics. Volume 2
Location: Athens
Country: Greece
Start Date: May 29, 1978
End Date: June 2, 1978
Accession Number
80A37728
Funding Number(s)
CONTRACT_GRANT: NAS6-2484
Distribution Limits
Public
Copyright
Other

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