Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Characteristics of Damaging Earthquakes Occurred in Seoul Metropolitan Area for the Last Two Thousand Years

과거 2000년간 서울 및 수도권에서 발생한 피해 지진의 특성

  • Kyung, Jai Bok (Department of Earth Science Education, Korea National University of Education)
  • 경재복 (한국교원대학교 지구과학교육과)
  • Received : 2012.11.23
  • Accepted : 2012.12.24
  • Published : 2012.12.31
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Abstract

The Seoul metropolitan area is densely populated with 40 percent of Korean people and quite weak to the seismic hazard. According to the analysis of historical documents, the largest earthquake occurred in this area is MMI VIII-IX acompanying with a large shaking, collapse of stone walls, collapse of houses, and many casualties. Two times of damaging earthquakes occurred in the first century (A.D. 27, 89), and there was a long quiet period of about 1430 years. Another big earthquakes re-occurred three times in the 16-17 century (1518, 1613, 1692) and then a quiet period has continued to the present time. Just after Seoul earthquake in 1518, aftershocks occurred almost 19 days consecutively and many triggered earthquakes occurred not only in Seoul metropolitan area but also in Hwanghae province, northern Korea. It indicates that the largest potential earthquake in and around Seoul is MMI VIII-IX with a long occurrence period of about 1400-1500 years.

서울을 비롯한 수도권 일대는 우리나라 인구의 약 40%가 집중되어 갑작스럽게 닥치는 지진재해에 매우 취약한 곳이다. 역사문헌 분석에 의하면 과거 2000여 년간 서울 지역에서 발생한 피해 지진의 최대 크기는 MMI 진도 VIII-IX로 평가되며, 이들 지진으로 건물의 큰 흔들림, 담장과 성첩의 붕괴, 민가 붕괴, 다수의 사상자가 발생하였다. 서울 지역에서 MM 진도 VIII 이상의 피해지진은 1세기(A.D. 27년, 89년)에 2회 발생하였으며, 약 1430여년의 긴 휴지기 후 16-17세기(1518년, 1613년, 1692년)에 다시 3회 발생하였고, 그 후 현재 까지 휴지기 상태이다. 1518년 서울 지진(진도 VIII-IX)시에는 약 19일에 걸쳐 24회 이상의 여진이 발생하였으며, 서울 인접 지역과 황해도 지역에도 20여 일간에 걸쳐 많은 유발지진을 발생시켰다. 역사문헌에 근거한 서울 지역의 발생 가능한 최대 피해 지진은 진도 VIII-IX 이며 이러한 지진의 발생은 약 1400-1500여년의 긴 간격을 보인다.

Keywords

References

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