MeSO-net連続地震観測記録にみられる関東平野西端部による盆地端部生成波の伝播特性

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  • PROPAGATION CHARACTERISTIC OF THE BASIN EDGE INDUCED WAVE AT THE WESTERN EDGE OF THE KANTO BASIN OBSERVED FROM THE CONTINUOUS RECORD OF MeSO-net

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<p>The generation process and propagation of the basin edge induced wave were observed from the continuous ground motion record by MeSO-net. The basin edge induced wave was generated at the western edge of the Kanto basin when S-wave, generated near Choshi City, arrived there. Particle motion revealed that Love wave dominates in the transverse components, while the higher mode of Rayleigh wave dominates in vertical motion. Snapshot enables to visualize the marriage of the basin edge induced wave and direct surface wave. Numerical simulation reproduced the observed basin edge induced wave. That wave significantly amplifies the displacement response.</p>

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