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이병걸,최영찬 濟州大學校 海洋硏究所 2004 해양과환경연구소 연구논문집 Vol.28 No.1
To find out the horizontal and the vertical temperature structures and the current characteristics of coastal ocean around Jeju Power Plant located at north part of Jeju Island, we observed the seawater temperature in March, May, September and December, in 2003 and also 15 days long times waves using a current meter respectively. The observed results show that the seasonal variations of the horizontal and vertical temperature pattern happened. However, the horizontal temperature distribution pattern was not much changed. It means that the horizontal temperature change was not so strong due to tidal mixing effects in coastal area. So that the density current was so weak by the weak stratification effects. The surface current pattern shows that the M₂ tidal current component was relatively strong compared with K₂, K₁, 0₁ and constant flow. From the observation results, we found that the density current around Jeju Power Plant was very weak but the surface current was strong since the tidal current effects.
수치모델을 이용한 제주도 무릉리 주변해역의 조류 및 온배수확산특성
이병걸,양성기,방익찬 제주대학교 해양연구소 1996 해양자원연구소연구보고 Vol.20 No.-
The numerical models based on the shallow water wave equation and the diffusion equation were applied to the coastal mne of Murung-ri, Cheju Island to find out tidal current and thermal diffusion pheno-mena Computed maximun tidal current velocity during ebb and flood tide was almost 100 cm/sec and main directions of tidal current were South-East in flood and North-West in ebb tide, that was similar to the observation one. The thermal diffusion length of horizontal and verical directions from coastal zone were 3 km and 1 km. repectively during 1 tidal cycle based on numerical diffusion model. The diffusion pattern during tidal cycle was strongly related to tidal current velocity patterns.
GSIS 를 이용한 제주도 국토개발에 따른 환경변화에 관한 연구
이병걸,강인준 한국환경과학회 2000 한국환경과학회지 Vol.9 No.1
The purpose of this paper is to present the environment change of Cheju Island as land development process using GSIS(Geo-Spatial Information System) technique. We implemented the process based on the maps of soil color, underground water pollution points, land use, land development planning and land sight seeing supported by Cheju Province Office. To use the maps for GSIS data, first we transformed the picture data of the office into raster structured picture data using scanner. Second, the coordinate system was added to raster data using 1/50000 geographic map. Third, we estimated land planning process using GSIS technique(overlay and reclass technique). The results showed that land development effected the natural environment(forest, green field, farm land). However, the chemical pollution and land sight seeing was not so much effected by the land development that was found.
대 · 소조기변동에 따른 득량만내의 부유퇴적물의 변동 및 분포특성
이병걸,공영세,조규대 한국환경과학회 1996 한국환경과학회지 Vol.5 No.4
The temporal variations of the suspended material concentration (SMC) during spring-neap tidal cycle was investigated at more than 30 stations in Deukryang Bay, Korea, in 1 and 23 July, 1992. The averaged total SMC in spring tide was two times more than those in neap tide. It can be explained that the strong tidal current in spring tide disturbed bottom waters and induced higher SMC in the bay. The areal distributions of SMC for the surface and the bottom layers in the bay shows much different patterns during spring and neap tidal cycle. We concluded that the vertical stratification intensity of water mass is important factor of the horizonatal distribution of SMC in the bay.