On the change of seismic velocities at pressure- and temperature-induced phase transitions

Details On the change of seismic velocities at pressure- and temperature-induced phase transitions On the change of seismic velocities at pressure- and temperature-induced phase transitions

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pepi...22..211s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 22, Issue 3-4, p. 211-215.

Physics

1

Scientific paper

The possible behaviour of the seismic velocities υp and υs at a polymorphic phase transition or melting transition is investigated. The starting point is the free enthalpy of an elastic continuum where a first-order phase transition takes place. The transition is described with the help of the Landau theory. The interaction between order parameter η and strain tensor uij provides correction terms to the elastic constants and in this manner the seismic velocities may change. Some examples for which the theory seems applicable are presented.

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