Steep Reflections from the Earth’s Core Reveal Small-Scale Heterogeneity in the Upper Mantle

Steep Reflections from the Earth’s Core Reveal Small-Scale Heterogeneity in the Upper Mantle Selected PcP (left) and PKiKP (right) observations for the mb=5.7 earthquake located northwest of Kuril Islands and dated 02/07/2001. The broadband velocigrams are band-pass filtered between 1 and 3 Hz. The theoretical travel time prediction of PcP and PKiKP from the ak135 model is shown by solid line. The scales for PcP and PKiKP records are different to account for the space and changing slowness across the range of selected stations.
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Tau-p Depropagation of Five Regional Earthquakes Recorded by the Earthscope Usarray to Constrain the 410-km Discontinuity Velocity Gradient</p>

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