| 講演要旨(和文) | | 強震動予測のためのシミュレーションなどの際に必要となる地下構造を,モデル化するための標準的な手順を提案した.この標準的なモデル化手法は主に地質情報と,屈折法・反射法・ボーリング検層・重力探査・微動探査などの物理探査の結果を基にしているが,自然地震の波形記録やそのスペクトルを用いたチューニングも含めてある.このモデル化手法を首都圏の浅い基盤構造だけなく,深い地殻構造やフィリピン海プレートの構造にも適用して,その妥当性を検証した. |
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| | 講演要旨(英文) | | We have established a standard procedure to model a velocity structure, which is required for a numerical simulation in the prediction of strong ground motion. This modeling procedure is mostly based on results of geological surveys and geophysical explorations such as refraction, reflection, borehole, gravity and microtremor surveys, but we also introduce waveform or spectral tuning of the velocity structure using earthquake seismograms. We applied the procedure not only to the shallow basement structure, but also to the deep structures of the crust and the subducting Philippine Sea plate beneath the Tokyo metropolitan area, in order to verify its correctness. |
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