Seismic Activity, Polar Tides and the Chandler Wobble

Details Seismic Activity, Polar Tides and the Chandler Wobble Seismic Activity, Polar Tides and the Chandler Wobble

Sep 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973natur.245...77p&link_type=abstract

Nature, Volume 245, Issue 5420, pp. 77-81 (1973).

Physics

8

Scientific paper

Earthquakes may be triggered by changes in the elastic energy which are neither too fast (~days) nor too slow (~106 yr). Such a point of view provides a qualitative understanding of suggested correlations between polar motion and the annual seismic energy release. The Chandler wobble and earthquakes may have a common excitation source-the release of elastic energy stored in the Earth-and we show that a resonant coupling between seismic activity and polar motion has the right sign and strength to explain the pumping of the Chandler wobble as a consequence of in-phase release of elastic energy.

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