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GEOS-3 ocean current investigation using radar altimeter profilingBoth quasi-stationary and dynamic departures from the marine geoid were successfully detected using altitude measurements from the GEOS-3 radar altimeter. The quasi-stationary departures are observed either as elevation changes in single pass profiles across the Gulf Stream or at the crowding of contour lines at the western and northern areas of topographic maps generated using altimeter data spanning one month or longer. Dynamic features such as current meandering and spawned eddies can be monitored by comparing monthly mean maps. Comparison of altimeter inferred eddies with IR detected thermal rings indicates agreement of the two techniques. Estimates of current velocity are made using derived slope estimates in conjunction with the geostrophic equation.
Document ID
19780025753
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Leitao, C. D. (NASA Wallops Flight Center Wallops Island, VA, United States)
Huang, N. E. (NASA Wallops Flight Center Wallops Island, VA, United States)
Parra, C. G. (EG and G Washington Anal. Serv. Center, Inc., Pocomoke City Md., United States)
Date Acquired
September 3, 2013
Publication Date
October 1, 1978
Subject Category
Oceanography
Report/Patent Number
NASA-TM-73280
Accession Number
78N33696
Funding Number(s)
CONTRACT_GRANT: NAS6-2730
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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