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Steep reflections from the earth's core reveal small-scale heterogeneity in the upper mantle

Tkalcic, Hrvoje; Cormier, Vernon F; Kennett, Brian; Kuang, He

Description

We investigate arrivals of seismic phases reflected from the core-mantle boundary (PcP waves) and those reflected from the inner-core boundary (PKiKP waves) at subcritical angles, with the goal of measuring their amplitude ratios. This adds invaluable data points required to study the density jump across the inner-core boundary (ICB). One nuclear explosion and one earthquake, both with favourable focal mechanisms are identified as sources that produce an excellent and abundant record of...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/54610
Source: Physics of the Earth and Planetary Interiors
DOI: 10.1016/j.pepi.2009.08.004

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