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タイトル: 71. 1968年十勝沖地震による東北・北海道地方の墓石の移動
その他のタイトル: 71. Translation of Grave-stones in Northeast Honshu and Hokkaido by the 1968 Off-Tokachi Earthquake
著者: 恒石, 幸正
著者(別言語): Tsuneishi, Yukimasa
発行日: 1969年3月17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46冊第6号, 1969.3.17, pp. 1415-1424
抄録: After the 1968 Off-Tokachi Earthquake of May 16, 1968, its effect on grave-stones, especially the direction of translation (sliding) of grave-stones, was examined in Northeast Honshu and Hokkaido, Japan, in order to clarify the direction of maximum acceleration of the ground vibration. The results are shown in Fig. 2 as to the directions of translation in each location and in Fig. 1 as to their relation to the epicenter of the main shock and its aftershock region. In Fig. 1 the directions of translation indicated by arrow marks are distributed in radial pattern and two different regions, centrifugal and centripetal in the direction of translation, are recognized. Field evidence reveals that Japanese standard granite grave-stones easily slide on their base-stones (Figs. 10-11, Table 2). This is also supported by the experimental result on the coefficient of friction between two granite cakes (Fig. 7) carried out by the author.
URI: http://hdl.handle.net/2261/12442
ISSN: 00408972


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