Institute of Geophysics, University of TehranJournal of the Earth and Space Physics2538-371X32320061023The effect of solid tide in geopotential field of an elastic and inelastic earthThe effect of solid tide in geopotential field of an elastic and inelastic earth1982232FAMehdiEshaghRoyal Institute of Technology (KTH), SE 100 44, Stockholm, Sweden and Islamic Azad University, Shahr-e-Rey branch, P.O.Box 18735-334, Tehran, IranMehdiNajafi AlamdariK.N.Toosi University of Technology, P.O.Box 15875-4416,Tehran, IranJournal Article20030819In this paper the influence of solid tide on the Earth gravity field is considered. In this consideration the Earth can be regarded as either an elastic or inelastic body. Each one of these elastic and inelastic bodies has two main tidal components, frequency dependent and frequency independent components. In this article how to compute the effect of these components in the Earthâ€™s gravity field is presented. In this investigation, an attempt is made to find out whether the Earth should be regarded as an elastic or inelastic body in practical applications. Computations show equivalent effects on the gravity field due to the elastic and inelastic Earth model. The effect of the frequency dependent component of solid tide due to the elastic and inelastic Earth is much smaller than the frequency independent components. It depends on time and tidal constituents and it should be considered in precise applications. Comparisons between the solid tides due to the elastic and inelastic Earth model show that the inelastic Earth is contracted at poles about 3 mm and expanded at equator about 2.5 mm more than the elastic case.In this paper the influence of solid tide on the Earth gravity field is considered. In this consideration the Earth can be regarded as either an elastic or inelastic body. Each one of these elastic and inelastic bodies has two main tidal components, frequency dependent and frequency independent components. In this article how to compute the effect of these components in the Earthâ€™s gravity field is presented. In this investigation, an attempt is made to find out whether the Earth should be regarded as an elastic or inelastic body in practical applications. Computations show equivalent effects on the gravity field due to the elastic and inelastic Earth model. The effect of the frequency dependent component of solid tide due to the elastic and inelastic Earth is much smaller than the frequency independent components. It depends on time and tidal constituents and it should be considered in precise applications. Comparisons between the solid tides due to the elastic and inelastic Earth model show that the inelastic Earth is contracted at poles about 3 mm and expanded at equator about 2.5 mm more than the elastic case.https://jesphys.ut.ac.ir/article_82232_bf0f7206c406ab6ca1e5d9578ecfeed0.pdf