Phase delay of the solid earth tide

Details Phase delay of the solid earth tide Phase delay of the solid earth tide

Jun 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970pepi....2..233s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 2, Issue 4, p. 233-238.

Physics

3

Scientific paper

Tidal strain data from Isabella, California and N~an~a, Peru have been analyzed to determine the phase shift of the M2 solid tide and the Love number combination (h-3l). The phase advance of the tidal bulge is 3.0+/-1°, and (h-3l)=0.475. Tidal strain meters appear to be more suitable for such measurements than do gravimeters. Indirect tidal effects due to ocean and atmosphere loading of the crust are minimized by performing the tidal analysis on the areal dilatation rather than on individual strain components. The lunar retarding torque calculated from this result is (5.7+/-1.7)×10-23 dyne cm which is in agreement with the value obtained from discrepancies in the lunar orbit. The tidal effective Q determined here is 10, which is entirely controlled by losses in the ocean and atmosphere and has no bearing on the anelasticity of the solid Earth.

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