Satellite Gravity and the Geosphere Contributions to the Study of the Solid Earth and Its Fluid Envelopes (1997) / Chapter Skim
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APPENDIX B
APPENDIX B
Pages 99-104
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From page 99... ...
In that case, we can fit the spatial pattern of the geoid to the data to obtain the amplitude. This approach involves expanding the geoid pattern as a sum of sphencal hannon~cs, and then fitting an overall amplitude of that sum to the spherical harmonic coefficients determined from We satellite data.
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From page 100... ...
As discussed In Chapter 2 and Appendix A, however, a gravity mission can provide a better result if Me averaging kernel is a Gaussian weighting function over the entire Earth, wad a full-w~dth half maximum equal to He disc's diameter framer than equal to ~ across the disc and O outside of it)
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From page 101... ...
can be used to transform geoid expansion coefficients elm and sum to mass expansion coefficients cam and Am and to construct degree amplitudes of the mass distribution in equivalent water thickness (i.e., Alice +52 )
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From page 102... ...
FIGURE B.2 Accuracy versus resolution for an annually-vaIying change in the thickness of a disc of water, averaged over 5 years, for four generic missions. The mission altitudes and durations are the same as in Figure B
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From page 103... ...
FIGURE B.4 Accuracy versus resolution for each 90-day value of the thickness of a disc of water for four generic missions. The mission altitudes are the same as in Figure B.3, but the values are calculated for a 90-day mission.
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From page 104... ...
, with model Integration results provided by Frank Bryan at the National Center for Atmospheric Research. The effects of atmospheric pressure va rations were calculated using Me archived analysis fields of the National Centers for Env~ronrnental Prediction (formerly the National Meteorological Center)
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