著者
楠本 成寿 福田 洋一 竹村 恵二 竹本 修三
出版者
学術雑誌目次速報データベース由来
雑誌
地學雜誌 (ISSN:0022135X)
巻号頁・発行日
vol.110, no.1, pp.32-43, 2001
参考文献数
35
被引用文献数
1 6

In order to solve a mechanical inconsistency that the Osaka Bay basin exists between the Median Tectonic Line (MTL) and Arima-Takatsuki Tectonic Line (ATTL) (right-lateral left-stepping faults), we attempted to investigate and evaluate the basin forming mechanism at the termination of right-lateral left-stepping faults by means of the dislocation modeling.<BR>The results of the numerical simulations show that the sedimentary basin can be formed at the termination of the right-lateral left-stepping faults develop, if the secondary fault caused by the rightlateral motion is a reverse fault and its displacement is larger than 20% of the lateral motion. We applied this model to the fault distribution in the Kinki district, and found that tectonic structures around the Osaka Bay can be explained by combination of 1) the right-lateral motion of the MTL and ATTL and 2) the reverse motion of their secondary faults, <I>i.e</I>., Nara-Toh'en Fault, Ikoma Fault and Rokko-Awaji Fault Systems.

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今朝の大阪府北部の地震は、右横ずれと逆断層型の断層変位が複合して生じたようだ。右横ずれを主体する断層の動きが大阪湾周辺の大地形の形成に寄与したという論文。 https://t.co/PadRW4YhnZ 今回の地震も数百万年の時間… https://t.co/Hna380VBwU

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