Abstract
We summarize recent results of our work on inversion for laterally heterogeneous earth structure using the Direct Solution Method (DSM). We obtained a 3-D upper mantle S-wave velocity model, PUM0 (Preliminary Upper Mantle model, version 0) by iterative linearized waveform inversion of surface wave data. The deep roots of ridges and cratons can be identified as the geological features responsible for the lateral heterogeneity of PUM0 at depths of 300-400km. We discuss the necessity of iterative linearized waveform inversion based on our calculations. We also discuss the future prospects for application of the DSM to waveform inversion of body wave data for the 3-D structure of the earth's deep interior.
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Schedule a callMore From: Zisin (Journal of the Seismological Society of Japan. 2nd ser.)
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