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タイトル: 貞享二、三年(1685, 1686年)の三河地震 : 吉田藩内とその近傍で書かれた新発掘史料による考察
その他のタイトル: A Few Comments on the 1685 and 1686 Mikawa Earthquakes on the Basis of Newly Discovered Historical Documents Recorded in the Toyohashi Region, Central Japan
著者: 中西, 一郎
著者(別言語): Nakanishi, Ichiro
キーワード: historical earthquakes
Nankai trough
great Hoei earthquake seismic precursors
Mikawa earthquakes
発行日: 2000年3月30日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第74冊第3/4号, 2000.3.30, pp. 301-310
抄録: It is mentioned in several earthquake catalogues of historical earthquakes that two earthquakes occurred in May, 1685 and on October 3, 1686 in the Toyohashi region, central Japan. We have recently found historical documents recording the latter earthquake in the Toyohashi region where previous studies located the epicenter of the 1686 earthquake without documents. Our analysis of the documents suggests that the 1685 earthquake did not occur. The damage recorded in the historical documents on the 1686 earthquake was large in villages on the Pacific side of the Toyohashi region. According to this evidence we consider that the epicenter of the 1686 earthquake may be located near the Pacific coast to the south of the town of Toyohashi. This large earthquake, the magnitude of which is estimated to be about 7, occurred 21 years before the great Hoei earthquake of October 28, 1707 (M=8.4). In the eastern part of Aichi prefecture, including the Toyohashi region and the offshore region of the Atsumi peninsula, moderate earthquakes have recently occurred. It is possible that the 1686 earthquake was a seismic precursor to the great 1707 earthquake. The eastern part of Aichi prefecture and the offshore region of the Atsumi peninsula in Aichi prefecture may be regions where we should carefully observe seismic activity, and other geophysical and geochemical phenomena.
URI: http://hdl.handle.net/2261/13178
ISSN: 00408972
出現カテゴリ:東京大学地震研究所彙報
東京大学地震研究所彙報

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