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WRF/HYSPLIT 모델을 이용한 고리원전 인근 국지바람 패턴에 따른 방사성물질 대기확산 특성 KCI 등재

Atmospheric Dispersion of Radioactive Material according to the Local Wind Patterns around the Kori Nuclear Power Plant using WRF/HYSPLIT Model

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

The characteristics of atmospheric dispersion of radioactive material (i.e. 137Cs) related to local wind patterns around the Kori nuclear power plant (KNPP) were studied using WRF/HYSPLIT model. The cluster analysis using observed winds from 28 weather stations during a year (2012) was performed in order to obtain representative local wind patterns. The cluster analysis identified eight local wind patterns (P1, P2, P3, P4-1, P4-2, P4-3, P4-4, P4-5) over the KNPP region. P1, P2 and P3 accounted for 14.5%, 27.0% and 14.5%, respectively. Both P1 and P2 are related to westerly/northwesterly synoptic flows in winter and P3 includes the Changma or typhoons days. The simulations of P1, P2 and P3 with high wind velocities and constant wind directions show that 137Cs emitted from the KNPP during 0900~1400 LST (Local Standard Time) are dispersed to the east sea, southeast sea and southwestern inland, respectively. On the other hands, 5 sub-category of P4 have various local wind distributions under weak synoptic forcing and accounted for less than 10% of all. While the simulated 137Cs for P4-2 is dispersed to southwest inland due to northeasterly flows, 137Cs dispersed northward for the other patterns. The simulated average 137Cs concentrations of each local wind pattern are 564.1~1076.3 Bqm-3. The highest average concentration appeared P4-4 due to dispersion in a narrow zone and weak wind environment. On the other hands, the lowest average concentration appeared P1 and P2 due to rapid dispersion to the sea. The simulated 137Cs concentrations and dispersion locations of each local wind pattern are different according to the local wind conditions.

목차
Abstract
 1. 서 론
 2. 자료 및 연구방법
  2.1. 대상지역
  2.2. 군집분석
  2.3. 모델구성 및 입력자료
 3. 결과 및 고찰
  3.1. 국지바람 패턴분류 및 패턴별 특성
  3.2. 국지바람 패턴별 상세 바람장 분석
  3.3. 국지바람 패턴별 방사성물질 대기확산 특성
 4. 결론
 REFERENCE
저자
  • 안혜연(부산대학교 지구환경시스템학부) | Hye Yeon An (Division of Earth Environmental System, Pusan National University)
  • 강윤희(부산대학교 환경연구원) | Yoon-Hee Kang (Institute of Environmental Studies, Pusan National University)
  • 송상근(제주대학교 지구해양과학과) | Sang-Keun Song (Department of Earth and Marine Sciences, Jeju National University)
  • 방진희(울산대학교 의과대학 환경보건센터) | Jin-Hee Bang (Environmental Health Center, University of Ulsan College of Medicine)
  • 김유근(부산대학교 지구환경시스템학부) | Yoo-Keun Kim (Division of Earth Environmental System, Pusan National University) Corresponding author