既存のスペクトルインバージョン結果と震源インバージョン結果から推定されるアスペリティの実効応力と断層タイプおよび深さとの経験的関係

概要

論文の詳細を見る
Empirical relations of the effective stress on the asperity to the fault type and the depth were examined for more accurate prediction of strong ground motions from a future earthquake. The existing spectrum inversion results showed that the level of the acceleration source spectrum in a short period range, called short period level in this paper, varied several hundred percent as a function of the fault type (inland earthquake, subduction earthquake, and slab earthquake) and 10 percent as a function of the focal depth. The effective stress on the asperity, inferred from the short period level, had the same feature as the short period level. The existing variable-slip rupture models showed that the effective stress on the subfaults in the asperity varied several hundred percent as a function of the fault type (strike slip fault with a surface rupture, reverse fault with a buried rupture, and oblique slip fault with a buried rupture) and 10 to 30 percent as a function of the depth of the subfault.
社団法人日本建築学会の論文
2003-03-30