Open AccessBody tides on an elliptical, rotating, elastic and oceanless earth
Author(s) -
Wahr John M.
Publication year - 1981
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1981.tb02690.x
Subject(s) - earth's rotation , tidal force , stratification (seeds) , rotation (mathematics) , earth model , mantle (geology) , tidal waves , geology , geophysics , tidal acceleration , geodesy , tidal heating , day length , physics , mechanics , geometry , astrophysics , mathematics , medicine , seed dormancy , photoperiodism , germination , botany , dormancy , planet , biology
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.