Proceedings of KOSOMES biannual meeting (해양환경안전학회:학술대회논문집)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Distribution of Marine Debris collected from the Sandbar Coastline after the Passage of Typhoons, Nakdong River Estuary

태풍 내습후 낙동강 하구 사주해안의 쓰레기 분포

  • Park, Son (Dept. of ocean Engineering, Pukyong National University) ;
  • Yoon, Han-Sam (Research Center for Ocean Industrial Development, Pukyong National University)
  • 박순 (부경대학교 해양공학과) ;
  • 윤한삼 (부경대학교 해양산업개발연구소)
  • Published : 2007.11.29
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Abstract

Using field observations, this study estimated the total weight and types of marine debris along the coast of Jinu Island in the Nakdong River Estuary after typhoons Usagi and Nari had passed. A numerical wave m며el was used to calculate the spatial wave height distribution at the time of the typhoons' passage. This study found that the total accumulation of marine debris deposited on the coast after the two typhoons had passed was about $5,769.86kg/day/km^2$ at this sitε which was 14.42 times more than during normal weather. The wave height distribution in the sea off Jinu Island, based on numerical modeling， was $4.1^{\sim}3.5$ m, which was 1.0-2.5 times greater than for the case of other islands. Therefore, it is likely that the concentration of wave energy led to the deposition of marine debris.

본 연구는 최근 우리나라에 영향을 미친 태풍 우사기(USAGI)와 나리 (NARl) 내습시 낙동강 진우도 해안쓰레기량을 조사하고 그 종류 및 구성 성분을 평가하고, 수치모형실험을 통한 태풍 내습 파랑분포와의 상관성을 비교하였다. 그 결과에 따르면, (1) 태풍 내습시 낙동강 하구 진우도 해안쓰레기의 퇴적량은 $5,769.86kg/day/km^2$의 해안쓰레기가 퇴적되는 것으로 산정되었다 이는 평상시보다. 약 14.42배 많은 양이다 (2) 진우도 전면해역에서의 태풍 내습시 파고분포는 4.1- 3.5m였으며, 진우도 전면해역이 도요등 전면해역보다 파고비가 약 1.0배에서 2.5배 상승하여, 파랑에너지의 집중도가 크고, 보다 많은 양의 부유물질(쓰레기)의 밀집이 예상된다.

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