The subseismic approximation in core dynamics.

Details The subseismic approximation in core dynamics. The subseismic approximation in core dynamics.

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992geoji.108..502c&link_type=abstract

Geophysical Journal International, Vol. 108, No. 2, p. 502 - 506

Physics

8

Scientific paper

Scaling arguments have been used to justify the subseismic approximation (SSA) for analysing long-period oscillations of the Earth's liquid core. This approximation neglects the contribution of flow pressure to elastic compression relative to that of transport along the equilibrium pressure gradient. Here the authors present numerical tests of the SSA for a suite of 90 core undertones (gravity modes) in non-rotating Earth models with uniformly stable liquid cores.

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