한국지구과학회지 (Journal of the Korean earth science society)

  • 제24권3호
  • /
  • Pages.181-189
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  • 2003
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  • 1225-6692(pISSN)
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  • 2287-4518(eISSN)
한국지구과학회 (The Korean Earth Science Society)
권호 표지

일본 중서부지방에서 발생하는 동계 뇌 방전의 특징

The Characteristics of Winter Lightning Observed in the Mid-western Part of Japan

  • Lee, Jong-Ho (Remote Sensing Division, Korea Meteorological Administration) ;
  • Kawasaki, Z. (Department of Electrical Engineering, Osaka University) ;
  • Ryu, Chan-Su (Department of Earth Science, Chosun University)
  • 발행 : 2003.04.30
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초록

이 연구는 일본 중서부 지방에서 1996년 겨울철에 발생한 뇌우의 관측 자료를 분석한 것이다. 관측기간 중 35 회의 뇌우가 발생하였으며 발생된 뇌 방전 수는 4426개였다. 관측된 뇌 방전 수를 뇌 방전 종별로 구분하여 그 발생비율을 구하였고, 뇌 방전의 종류와 기압배치와의 관계도 분석하였다. 그 결과 구름 뇌 방전의 비율은 약 78%이었으며, 양극성 낙뢰가 42.3%로 나타났다. 동계의 낙뢰활동은 미약하나 0${\sim}$5시에 가장 강하였다. 또한, 낙뢰는 북서 계절풍이 강한 경우에 활발하게 발생되고 있음을 알 수 있었다. 다중뇌와 다지점 낙뢰의 분석결과 평균 다중도는 1.4이고, 평균 다지점 낙뢰는 1.2로 나타났다.

This study analyzes the results of thunderstorm data observed in the mid-western part of Japan during the winter of 1996-1997. There were 35 instances of thunderstorms with 4,426 instances of lightning detected during the observation period. This study estimates the frequency of lightning occurrence through classification of detected lightning into two types, and analyzes the relationship between lightning types and synoptic pattern. According to the analyzed results, cloud-to-cloud discharge and positive polarity occupied 78% and 42.3% of total discharge, respectively. It is rare for lightning to occur in the winter season, usually occuring during the night (midnight to 5 a.m.). Lightning frequently occurs when there is a prevailing synoptic wind from the norhwest. According to the analyzed results of multiplicity and multi-point lightning, the mean values of multiplicity and multi-point lightning are 1.4 and 1.2, respectively.

키워드

참고문헌

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