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A refined model for the influence of ocean tides on UT1 and polar motion
Author(s) -
Seiler U.,
Wünsch J.
Publication year - 1995
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2103160610
Subject(s) - polar motion , polar , amplitude , motion (physics) , physics , geodesy , geology , geophysics , earth's rotation , classical mechanics , astronomy , optics
Periodic changes in Universal Time and polar motion have been derived from a numerical ocean model for a number of small partial tides. Combined with the results reported earlier our model now includes the 34 most important constituents of degree 2 (measured by the amplitude of the tidal potential). The results show that the terms neglected in all existing models amount to 80 μs in UT1 and to 0.3 mas in polar motion.