著者
Takane Hori
出版者
The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan
雑誌
Journal of Physics of the Earth (ISSN:00223743)
巻号頁・発行日
vol.44, no.4, pp.349-356, 1996 (Released:2009-04-30)
参考文献数
18
被引用文献数
12 19

To evaluate the temporal variation of seismicity in the Inner Zone of Southwest Japan before and after the Nankai trough events, we introduced a statistical model and estimated the value of the model parameters. We used the data of disastrous earthquakes to estimate them. Because of the lack of spatially sufficient data, we used data from the 9th century in the case of the northern Kinki region, and in the case of the whole Inner Zone of Southwest Japan only data after the 17th century. The results show that for the northern Kinki region the seismicity has a peak before the Nankai trough events, although there is no significant change before them in the whole Inner Zone of Southwest Japan. The seismicity in the Inner Zone of Southwest Japan increases just after the Nankai trough events. We compared the obtained intensity functions with the recent JMA data from 1885 to 1995. The seismicity seems to have increased in the last 30 years. Using data from this period, we estimated the occurrence time of the next Nankai trough event. Our results show that it will occur in the 2030'S.

言及状況

外部データベース (DOI)

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南海トラフ地震の前に西日本で地震が増えるというのは堀・尾池の20数年前の研究成果で、過去の南海トラフ地震の数10年前から被害地震が増えていたという長い時間スケールの話です。地震発生の年をピンポイントで予測するのは無理、ましてや数日という精度などないです。 https://t.co/D9KnqMRziP
この件、少なくとも15年前には査読論文になってるよなあ,,, Hori and Oike 1998 JPE https://t.co/0FD1rpJ1Wy (オープンアクセス)

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