| 講演要旨(和文) | | トルコの強震観測点において実施された微動探査と表面波探査による表層地盤のS波測度構造モデルの比較を行った．両手法で用いられているレイリー波の位相速度の周波数範囲の差異がモデルの違いの原因となることを示した．それらの差異が地盤増幅特性に及ぼす影響は大きく無視できない場合が多い．より適切な地盤モデルの推定には，両者による位相速度を統合して解析することが望ましいと考えられる． |
|
|
| | 講演要旨(英文) | | Shallow S-wave profiles obtained at 13 strong motion stations in five areas in Turkey from microtremor array exploration and surface wave exploration were compared. The two kinds of the models are similar to a depth of 10meters. However, the S-wave distributions in depths more than 10meters are different, because of the different frequency range of Rayleigh phase velocity used in inversion for the models. The difference in the Vs-profiles contained large effects in the amplifications of S-waves with different dominant frequencies. The average S-wave velocities for the models are also compared. The average S-wave velocity in the top 10meters shows better agreement in the two models than those in the top 30meters. |
|
|
|
| |
|