Nobi earthquake

At around 6:38 on October 28, 1891 (Meiji 24), an earthquake occurred across Aichi and Gifu prefectures. Its magnitude was 8.0. 7,273 people died. 222,501 houses were completely or partially destroyed, 20,067 roads were destroyed, 10,392 bridges were damaged, 7,177 levees collapsed, and 10,224 landslides occurred, but the areas most affected were Mino and Owari. This earthquake created the Neodani Fault Zone, which stretches for more than 80 kilometers from north-northwest to south-southeast. In particular, the area around Midori, Neo Village, Motosu County, Gifu Prefecture (now Neo Midori, Motosu City) rose about 6 meters on the west side and shifted about 2 meters to the south-southeast. There were many aftershocks, with Gifu Prefecture seeing 720 felt aftershocks in October. This earthquake caused an increase in hot spring water over a wide area, from the Iwashiro region in western Fukushima Prefecture and the Izu region of Shizuoka Prefecture to the Mimasaka region of Okayama Prefecture in the west.

[Usami Tatsuo]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

1891年（明治24）10月28日6時38分ころ、愛知・岐阜両県にまたがって発生した地震。規模はM8.0。死者7273人。全半壊の家屋22万2501、道路破裂2万0067か所、橋梁(きょうりょう)損落1万0392、堤防崩壊7177、山崩れ1万0224か所などの被害が発生したが、もっとも被害の大きかったのは美濃(みの)と尾張(おわり)の地方であった。この地震で、北北西―南南東の方向に延長80キロメートル以上にも及ぶ根尾谷断層帯(ねおだにだんそうたい)が出現した。とくに岐阜県本巣(もとす)郡根尾村水鳥(みどり)（現、本巣市根尾水鳥）付近では西側が約6メートル隆起し、南南東方向に約2メートルずれた。余震が多く、岐阜県では10月の有感余震は720回に達した。この地震で、福島県西部岩代(いわしろ)地方、静岡県伊豆地方から西は岡山県美作(みまさか)地方に至る広域で温泉水の増量がみられた。

［宇佐美龍夫］

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