The Elusive Stationary Geoid |
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Authors: | Vermeer Martin |
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Institution: | (1) Institute of Geodesy, Department of Surveying, Helsinki University of Technology, Finland |
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Abstract: | We discuss the various problems occurring when trying to fix a geoid or geopotential model using sea level observations sampled
during a limited time span from a bounded geographical domain. Such problems are on the one hand aliasing and spectral leakage,
and on the other, the non-conservation of matter over only part of the world ocean.
In the light of these issues we discuss whether it is sensible to include in a definition of the global geoid the radially
symmetric part of either the mean sea level field itself, or its linear or nonlinear time dependence, arriving at a negative
conclusion.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Stationary geoid mean sea level aliasing spectral leakage |
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