地学雑誌
Online ISSN : 1884-0884
Print ISSN : 0022-135X
内陸地震活動の統計的性質
活動期と静穏期及び大地震の続発性
青木 元吉田 明夫
著者情報
ジャーナル フリー

2002 年 111 巻 2 号 p. 200-211

詳細
抄録

We investigated statistical characteristics in a space-time distribution of large shallow inland earthquakes in Japan during the period from 1600 through 2000 using data from the following three catalogues : Chronological Scientific Tables (National Astronomical Observatory, 2001) for 1600-1884, Utsu (1979, 1982, 1985) for 1885-1925 and the catalogue of the Japan Meteorological Agency for 1926-2000. It is shown that an alternation of active and quiet periods is commonly observed for each district : inland seismicity tends to be active in the periods before and after great interplate earthquakes. Further, we show that another large earthquake is likely to occur after one during the period of 10-20 years within a distance of several tens of kilometers. We think this feature of the successiveness of large earthquakes is significant and we can utilize it for assessing seismic hazards.

著者関連情報
© Copyright (c) 東京地学協会
前の記事 次の記事
feedback
Top