On the relation between melting temperature and seismic parameter P for perovskites Melting-point at the mantle/core boundary

• Autorzy: Maj, S.
• Języki publikacji: EN

Abstrakty

EN

A linear semi-empirical relation between the making temperature Tm and product F of the mean atomic weight and seismic parameter F is suggested for mineral phases with perovskite structures. Theoretical studies are based on the Sutherland-Lindemann idea of melting processes and on Debye's model of solids. In calculations, thermodynamical data of several perovskite-fluorides and -oxides were also used. It results from the above relationship that for perovskite variant of the Earth's deep interior the probable melting temperature at the mantle/core boundary is about (5085š220) ÷ (5533š235) K; the parameter F was calculated from P- and S-wave velocities at a depth of 2890 km and normalized to room temperature.

Słowa kluczowe

EN

melting temperature/melting-point; seismic parameter F; perovskites; geothermodynamics

• Czasopismo: Acta Geophysica Polonica
• Rocznik: 2002
• Tom: Vol. 50, nr 3
• Strony: 413-422
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Maj, S.

• Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,