著者

寺島 敦

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.43, no.2, pp.189-198, 1990

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It gives us one of the fundamental informations for the counterplan of earthquake disaster prevention to survey how inhabitants faced with strong earthquake motions behave differently, in the regions of high and low seismicities. This study is done by questionnaire about the matter mentioned above. The survey region with low seismicity is the area effected by strong motions of the earthquake (May 30, 1984, <i>M</i>: 5.6) which occurred in the southwestern part of Hyogo Prefecture. The surveys in the cases of Ohita earthquake (April 21, 1975, <i>M</i>: 6.4) and Off Miyagi Earthquake (June 12, 1978, <i>M</i>: 7.4) were already done by OMOTE and MITSuNAMI (1976) and OMOTE <i>et</i> <i>al</i>. (1980), for the regions of high seismicities, respectively. The findings of their papers are referred to the present paper to compare their findings with the results of the current questionnaire. The results are as follows: Responding to JMA intensity scale 5, one hundred percents of the inhabitants in the region of low seismicity act involuntarily and instinctively, while onle 10% of those in the region of high seismicity do so. The findings suggest that the inhabitants in the region of low seismicity are apt to cause secondary disasters such as panic, fire and the like, at lower seismic intensity than those in the region of high seismicity.