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The analysis of GEOS-3 altimeter data in the Tasman and Coral seasA technique was developed for preprocessing GEOS-3 altimetry data to establish a model of the regional sea surface. The algorithms developed models for a 35,000,000 sq km area with an internal precision of + or - 1 m. There were discrepancies between the sea surface model so obtained and GEM6 based geoid profiles with wavelengths of approximately 2500 km and amplitudes of up to 5 m in this region. The amplitudes were smaller when compared with GEM10-based geoid determinations. However, the comparison of 14 pairs of overlapping passes in the region indicated altimeter resolution of the + or - 25 cm level if the wavelength corresponding to the Nyquist frequency were 30 km. The spectral analysis of such comparisons indicated the existence of significant signal strength in the discrepancies after least squares fitting, with wavelengths in excess of 200 km.
Document ID
19780007607
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Mather, R. S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1977
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-TM-78032
Meeting Information
Meeting: GEOS-3 Principal Investigator''s Final Meeting
Location: New Orleans
Start Date: November 18, 1977
End Date: November 19, 1977
Accession Number
78N15550
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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