Constraints on energy dissipation in the Earth's body tide from satellite tracking and altimetry

Details Constraints on energy dissipation in the Earth's body tide from satellite tracking and altimetry Constraints on energy dissipation in the Earth's body tide from satellite tracking and altimetry

Feb 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001geoji.144..471r&link_type=abstract

Geophysical Journal International, Volume 144, Issue 2, pp. 471-480.

Astronomy and Astrophysics

Astronomy

17

Earth Tides, Love Number, Ocean Tides, Q, Tides

Scientific paper

The phase lag by which the Earth's body tide follows the tidal potential is estimated for the principal lunar semi-diurnal tide M2. The estimate results from combining recent tidal solutions from satellite tracking data and from Topex/Poseidon satellite altimeter data. Each data type is sensitive to the body tide lag: gravitationally for the tracking solutions, geometrically for the altimetry. Allowance is made for the lunar atmospheric tide. For the tidal potential Love number k2, we obtain a lag ɛ of 0.20°+/-0.05°, implying an effective body tide Q of 280 and body tide energy dissipation of 110+/-25GW.

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