Determination of solid Earth tide phase lag by satellite observation data |
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Authors: | Bin Wu Yaozhong Zhu Bibo Peng |
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Institution: | (1) Institute of Gedesy and Geophysics, Chinese Academy of Sciences, 430077 Wuhan, China |
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Abstract: | The geopotential variation caused by solid Earth, ocean and atmospheric tides can be estimated from artificial satellite orbit
perturbations. It is shown that the total tidal variation in geopotential field derived from satellite tracking data, combined
with the recent accurate measurements of ocean tide obtained by Topex/Poseidon and atmospheric tide model, permits the estimates
of the solid earth tide phase lags for M2 and K1 constituents (respectively 0.12° and 0.13°). This result agrees rather well
with the result 0.16° derived from satellite data by Ray and the constrained theoretical result 0.21° given by Zschau; whereas
the results given by gravity tidal methods are rather scattering in the phase lag determination. |
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Keywords: | solid earth tide oceantide phase lag |
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