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GEOPHYSICAL RESEARCH LETTERS
Volume 29, Issue 9, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2001GL013747
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[1] The possibilities of a new numerical simulation method based on the coupling of the Spectral Element Method (SEM) with a modal solution method are illustrated by experiments focusing on the scattering induced by a localized plume-like inclusion in a modified PREM. The plume is represented by a vertical cylindrical inclusion extending from the surface to the 660 km discontinuity. We present seismograms computed down to 50 s and assess the limits of a first order mode perturbation (Born approximation) method against the new numerical simulation.
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