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A model of the general ocean circulation determined from a joint solution for the Earth's gravity fieldIf the geoid and the satellite position are known accurately, satellite altimetry can be used to determine the geostrophic velocity of the surface ocean currents. The purpose of this investigation is to simultaneously estimate the sea surface topography, zeta, the model for the gravity field, and the satellite orbit. Satellite tracking data from fourteen satellites were used; along with Seasat and Geosat altimeter data as well as surface gravity data for the solution. The estimated model of zeta compares well at long wavelengths with the hydrographic model of zeta. Covariance studies show that the geoid is separable from zeta up to degree 9, at which point geoid error becomes comparable to the signal of zeta.
Document ID
19900011234
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nerem, R. S. (Texas Univ. Austin, TX, United States)
Tapley, B. D. (Texas Univ. Austin, TX, United States)
Shum, C. K. (Texas Univ. Austin, TX, United States)
Yuan, D. N. (Texas Univ. Austin, TX, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1989
Publication Information
Publication: Ohio State Univ., Progress in the Determination of the Earth's Gravity Field
Subject Category
Geophysics
Accession Number
90N20550
Funding Number(s)
CONTRACT_GRANT: JPL-958122
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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