The Journal of the Petrological Society of Korea (암석학회지)

The Petrological Society of Korea (한국암석학회)
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Analysis of Global Volcanic Activities since 2010

2010년 이후 지구에서 발생한 화산활동 분석

  • Yun, Sung-Hyo (Department of Earth Science Education, Pusan National University) ;
  • Ban, Yong-Boo (Institute of Environmental Studies, Pusan National University)
  • 윤성효 (부산대학교 지구과학교육과) ;
  • 반용부 (부산대학교 환경연구원)
  • Received : 2016.11.01
  • Accepted : 2016.11.18
  • Published : 2016.12.31
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Abstract

The number of volcanoes erupted during the past ten thousand years(Holocene period) on this planet is known to stand around 1,520. Of those volcanoes, the number of active volcanoes during the six-years and seven-month period(January 2010 through the end of July 2016) is totals 209. These findings show that an average of approximate 90 volcanoes erupted every year since 2010. It is also found that over 90 percent of those active volcanoes took place in the circum-Pacific volcanic belt, which is commonly called 'Ring of Fire'. This status coincides with the distribution maps of active volcanoes on the earth: about 80 percent on subduction zone of the convergence of lithospheric plate; 15 percent on spreading zone; 5 percent on intra-plate zone. The period given in this research during 350 weeks, the following three volcanoes showed a frequency of more than 300 times eruption: Kilauea(Hawaii, USA, 338 times), Sheveluch(Kamchatka, Russia, 337 times), and Aira(Kyushu, Japan, 301 times). According to the survey conducted during the given period, there is no conspicuous increase in the frequency of volcano activities. It rather shows that volcanic eruptions took place almost evenly every year.

지구상에서 약 1만 년 전 부터 활동하였던 홀로세의 활화산들은 대략 1,520개로 알려져 있으며, 이들 중 최근에 활동하고 있는 화산체 즉 2010년 1월부터 2016년 7월 말 까지 약 6년 7개월 동안에 걸쳐 활동하고 있는 화산은 209개이다. 이 기간 중 매년 90개 전후의 화산들이 활동 중이며, 이 기간 동안에 활동한 화산들의 90%이상이 환태평양화산대인 "불의 고리"(Ring of Fire)에 위치한다. 이는 지구상에 분포하는 활화산들의 분포가 80% 정도는 암석권 판이 수렴하는 경계부에, 나머지 15% 정도는 발산하는 경계부에, 나머지 5% 정도가 판 내부에 위치하는 것과 잘 일치한다. 이 조사 기간 6년 7개월 즉 350주 동안 300회(주 단위)이상 활동한 화산은 Kilauea(338회), Sheveluch(337회), Aira(301회)등이다. 조사 기간의 자료에 근거하면 최근 들어 화산활동이 뚜렷하게 증가하는 현상은 볼 수 없으며, 매년 비슷한 수준의 화산들이 활동하고 있는 양상을 보여 준다.

Keywords

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