TY - JOUR
T1 - Temperature derivatives of elastic moduli of MgSiO3 perovskite
AU - Aizawa, Yoshitaka
AU - Yoneda, Akira
AU - Katsura, Tomoo
AU - Ito, Eiji
AU - Saito, Toshiaki
AU - Suzuki, Isao
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2004/1/16
Y1 - 2004/1/16
N2 - Elastic properties of polycrystalline MgSiO3 perovskite were determined by means of resonance sphere technique at temperatures from 258 to 318 K under atmospheric pressure. The temperature derivatives of adiabatic bulk (∂KS/∂T)P and shear moduli (∂G/∂T)P are -0.029(2) GPa/K and -0.024(1) GPa/K, respectively. Applying the present results in interpretation of seismological observations, we suggest that the chemical composition of the earth's lower mantle is pyrolitic at the potential temperature of 1600 K.
AB - Elastic properties of polycrystalline MgSiO3 perovskite were determined by means of resonance sphere technique at temperatures from 258 to 318 K under atmospheric pressure. The temperature derivatives of adiabatic bulk (∂KS/∂T)P and shear moduli (∂G/∂T)P are -0.029(2) GPa/K and -0.024(1) GPa/K, respectively. Applying the present results in interpretation of seismological observations, we suggest that the chemical composition of the earth's lower mantle is pyrolitic at the potential temperature of 1600 K.
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U2 - 10.1029/2003GL018762
DO - 10.1029/2003GL018762
M3 - Article
AN - SCOPUS:2442630474
VL - 31
SP - L01602 1-4
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 1
ER -