Mathematics – Logic
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004acasn..45...48l&link_type=abstract
Acta Astronomica Sinica, vol. 45, no. 1, p. 48-56
Mathematics
Logic
2
Astrometry, Earth'S Rotation, Chandler Wobble
Scientific paper
It is to compute hydrological excitation of Chandler wobble due to variation of soil moisture and water which is equivalent snow depth over land and to compare the result, together with atmospheric and to oceanic excitations, with astronomical observations. The result shows that the average energy of hydrological excitation in Chandler wobble frequency band is relatively smaller and can explain only about 10% of observed excitation. However, the combination of hydrological excitation with atmospheric excitation can evidently increase the squared coherence between observed excitation and combined excitation, and raise the raise the confident threshold of the coherence analysis. Therefore, the continental water storage change is also an important contributor to Chandler wobble excitation.
Chen Jing-Ling
Liao De-Chun
Liao X.-H.
Zhou Yan-Hong
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