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Tides and Modern GeodesyIn modem high-precision geodesy, and especially in modem space geodesy, every measurement that one makes contains tidal signals. Generally these signals are considered noise and must somehow be eliminated. The stringent requirements of the latest space geodetic missions place severe demands on tidal models. On the other hand, these missions provide the strongest data for improving tidal models. In particular, TOPEX/POSEIDON altimetry and LAGEOS laser ranging have improved models to such an extent that new geophysical information about the ocean and the solid Earth are coming to light. Presumably GRACE intersatellite ranging data will also add to this information. This paper discusses several of these new geophysical results, with special emphasis given to the dissipation of tidal energy. Strong constraints have recently been placed on the partitioning of energy dissipation among the ocean, atmosphere, and solid earth and between the deep and shallow ocean. The dissipation in deep water is associated with internal tides and has potentially important implications for understanding the ocean's thermohaline circulation.
Document ID
20020081318
Document Type
Conference Paper
Authors
Ray, Richard D.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Chao, Benjamin F.
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Weikko A. Heiskanen Symposium in GEODES(OH)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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