The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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A Study on Estimation of Submarine Groundwater Discharge Distribution Area using Landsat-7 ETM+ images around Jeju island

Landsat-7 ETM+ 영상을 이용한 제주 주변 해역의 해저 용출수 분포 지역 추정 연구

  • 박재문 (부경대학교 공간정보시스템공학과) ;
  • 김대현 (오션테크(주)) ;
  • 양성기 (제주대학교 토목공학과) ;
  • 윤홍주 (부경대학교 공간정보시스템공학과)
  • Received : 2014.06.21
  • Accepted : 2014.07.18
  • Published : 2014.07.31
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Abstract

This study was aimed to detect Submarine Groundwater Discharge (SGD) distribution image of Sea Surface Temperature (SST) using infrared band of Landsat-7 ETM+ around Jeju island. It is used to analyze SST distribution that DN value of satellite images converted into temperature. The estimation of SGD location is that extracting range of $15{\sim}17^{\circ}C$ from SST. The summer season images(July 28. 2006, Aug. 29. 2006 and Sep. 19. 2008) were used to analyze big difference between SST and temperature of SGD. The results, estimated SGD locations were occurred part of coastal area in northeastern of Jeju island.

본 논문은 Landsat-7 ETM+ 영상의 열적외 밴드를 이용하여 제주도 주변 해역의 해수면 온도 분포 영상을 제작하여 해저 용출수를 탐지하고자 하였다. 해수면 온도 분포 영상을 제작하기 위해 온도변환 알고리즘을 이용하여 위성영상의 DN 값을 온도 값으로 변환하여 해수면 온도 분포를 분석하였다. 해저 용출수 예상 지역 추정은 해수면 온도 분포 영상에서 해저 용출수의 온도로 판단되는 $15{\sim}17^{\circ}C$ 범위를 추출하는 것인데, 계절적으로 해수면 평균 온도와 해저 용출수 온도의 차가 많이 발생하는 여름철 영상(2006년 7월 28일과 2006년 8월 29일, 2008년 9월 19일)을 이용하였다. 그 결과 제주도의 동북부 연안에서 해저 용출수로 추정되는 지역이 일부 나타났다.

Keywords

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