- Volume 39 Issue 3
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Monitoring of Tidal Sand Shoal with a Camera Monitoring System and its Morphologic Change
카메라를 활용한 조석사주 관측시스템 구축 및 지형변화
- Lee, Soong-Ji (Ocean Science, Inha University) ;
- Lee, Guan-Hong (Ocean Science, Inha University) ;
- Kang, Tae-Soon (GeoSystem Research Corperation) ;
- Kim, Young-Taeg (Ocean Research Division, Korea Hydrographic and Oceanographic Administration) ;
- Kim, Tea-Lim (Department of Ocean Science and Engineering, Kunsan National University)
- Received : 2014.10.30
- Accepted : 2015.03.25
- Published : 2015.03.31
A tidal sandshoal, called 'Puldeung' in the Daeijackdo Marine Protected Area(DMPA), is facing erosion due to sand mining in the nearby coastal region. To monitor the morphologic change and erosion of Puldeung, a camera monitoring system was established at the top of Song-Ee Mountain in Daeijack Island. The system consists of 2 Cannon digital cameras, Eye-fi memory card/Long-Term Evolution wireless network, and solar power supply. The acquired camera images were analyzed to obtain the area of Puldeung by the following methods: geometric correction of image, identification of shoreline, areal measurement of Puldeung and its error estimation. To compare the Puldeung area with previously measured area of 1.79 km2 at tidal height of 137 cm in 2008 and of 1.59 km2 at tidal height of 148 cm in 2010, we selected images with same tidal heights. The Puldeung area was 1.37 and 1.23 km2 at the tidal height of 137 and 148 cm, respectively. The erosion at DMPA is very severe and thus it is imperative to initiate the morphodynamical study on the seasonal variation and long-term evolution of Puldeung as well as the causes and measures of Puldeung erosion.
Grant : 동북아평화를 위한 상고사정립 국가전략사업단
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