Core heat flux is critical in constructing Earth's thermal history, but
remains largely uncertain because mineral physics and thermodynamic
arguments place impractical bounds on its value. We attempt to constrain
this important quantity through a seismological determination of velocity
gradients in D" for both P and S waves. The figure for the western Pacific
is 45 mW/m**2, and the global core heat flux is 10 TW assuming that the
western Pacific is intermediate in the style of lower mantle dynamics.
Implications for the thermal history of the Earth from this rate of heat
loss from the core will be discussed.
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主催：愛媛大学地球深部ダイナミクス研究センター