Body tides on an elliptical, rotating, elastic and oceanless earth |
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| Authors: | John M Wahr |
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| Institution: | Cooperative Institute for Research in Environmental Sciences, University of Colorado, National Oceanic and Atmospheric Administration, Boulder, Colorado 80309, USA |
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| Abstract: | Summary. The Earth's deformation caused by the luni-solar tidal force is defined as the 'body tide'. We compute the effects of the Earth's rotation and elliptical stratification on the body tide for a number of modern elastic structural models. Rotation and ellipticity within the mantle are found to affect tidal observations by about 1 per cent. A consequence is an improved estimate for the fluid core resonance in the diurnal tidal band. Agreement between results for the different structural models is very good. As a result, the results computed here can be used to model the tidal effects of a globally averaged, oceanless, rotating, elliptical and elastic earth to an accuracy of at least one part in 300. |
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