CALCULATION OF TIDAL DISPLACEMENTS AND TILTS FOR A NON-ELASTIC ROTATING EARTH

Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia

* e-mail: sp287@mail.ru

Abstract. The method for calculating tidal displacements and tilts for the Earth without an ocean and with the ocean is described. This technique basically follows the methodology given in the International Earth Rotation Service Conventions, and differs from it in small corrections to the formulas for calculating displacements for daily (21) and semi-diurnal (22) waves, as well as a different set of normal and load Love numbers. The values of gamma-factors for the Earth without an ocean are given. The results of investigations can be used to process GNSS and inclined observations. The obtained results were compared with the works of other authors, and the method of calculation was implemented in the new version of the program for predicting the parameters of the Earth tides ATLANTIDA3.1_2017.

Keywords: tidal Love numbers, Earth tides, tidal displacements of the earth's surface, tidal tilts, program for predicting the parameters of the Earth tides ATLANTIDA3.1_2017.

About the authors

SPIRIDONOV Evgeny A. – Cand. Sci. (Phys. and Math.), leading staff researcher, Schmidt Institute of the Physics of the Earth, Russian Academy of Sciences. Moscow, Russia. Tel.: +7 (915) 141-78-76. E-mail: sp287@mail.ru

VINOGRADOVA Olga Yu. – science researcher, Schmidt Institute of the Physics of the Earth, Russian Academy of Sciences. Moscow, Russia. E-mail: sp295@mail.ru

Cite this article as: Spiridonov E.A., Vinogradova O.Yu. Calculation of tidal displacements and tilts for a non-elastic rotating Earth, Geofizicheskie Protsessy i Biosfera (Geophysical Processes and Biosphere), 2019, vol. 18, no. 1, pp. 61–73 (in Russian). https://doi.org/10.21455/gpb2019.1-6

English version: Izvestiya, Atmospheric and Oceanic Physics, 2019, vol. 55, iss. 7. ISSN: 0001-4338 (Print), 1555-628X (Online). URL: https://link.springer.com/journal/volumesAndIssues/11485