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조은일,이병걸,Cho, Eun-Il,Lee, Byung-Gul 해양환경안전학회 2008 해양환경안전학회지 Vol.14 No.2
We assessed the coastal landscape of Jeju and Busan cities, respectively. In the study, we tried to estimate the coastal landscape based on the micro-scale and visualization landscape concepts. According to the estimation, the seawater pumping line causes the serious problem of coastal landscape. It means that water management treatment system of coastal region has been an important problem in Jeju city and Busan city since the slight problem was not corrected such as the distributions of pipeline of the pumping system making a bad view in coastal region. To solve the problem, we observed the pipeline distributions that were on the surface around the coastal region. we proposed two methods, that is, one is a short time treatment, the other is a long time one. The short is based on the colour treatment, which is pipeline colour changing into surround natural one. The long time is the construction design method which needs construction management method. Although the later method was very useful in Jeju island and Busan city. However, it takes a lot of time and money. Therefore, in the situation, the short time plan is more useful method than the long time one. 제주시와 부산시 해안변의 경관훼손부분에 대한 연구를 수행하였다. 해안경관은 초점경관과 경관흡수인자들에 의하여 영향을 받는 것으로 나타났다. 부산시과 제주시의 해안경관을 조사한 결과 횟집수조 내 공급되는 해수를 인근 해역에 해수 파이프를 설치하여 이용하고 있으나 무질서하게 설치된 해수 인수관으로 인하여 아름다운 해안경관의 미관을 해치고 있으며 부산시나 제주시를 찾는 관광객들의 많은 불만을 야기시키고 있음을 알 수 있었다. 이러한 결과는 해수인수관의 색상과 질감 그리고 그것을 관찰하는 행인이나 관찰자에 의한 두 가지 정보에 의하여 해안경관이 결정됨을 알 수 있었다.
제주 서부 해안 지역 염지하수 특성 및 관정 개발에 관한 연구
조은일 ( Eun-il Cho ),고택균 ( Tak-kyun Ko ),이민규 ( Min-gyu Lee ),감상규 ( Sang-kyu Kam ) 한국환경과학회 2018 한국환경과학회지 Vol.27 No.8
The purpose of this study was to minimize salt water intrusion into freshwater aquifers and limit the development of freshwater aquifers, by selecting an appropriate excavation depth of in the western coastal area of Jeju Island. The study site was mostly basaltic lava, which was mainly composed of trachy basalt. A vertical logging test was conducted to investigate the vertical distribution of the groundwater and saline groundwater interface in the study well. It was found that freshwater groundwater, saline groundwater, and freshwater groundwater are distributed from the surface to approximately 16 m, 16∼50 m, and 50∼60 m, below the ground, respectively. In order obtain saline groundwater and minimize the inflow of freshwater into this well, the drilling depth should be limited in the range of 16∼50 m from the surface. Thus, saline groundwater well development should be carried out with reference to the measurement results, which depend on the drilling depth and EC (electrical conductivity) obtained with drilling apparatus for geology and ground handling.
가막만의 환경용량 산정 ( II ) -굴양식장 환경용량 산정-
조은일,박청길,이석모,CHO Eun-Il,PARK Chung-Kil,LEE Suk-Mo 한국수산과학회 1996 한국수산과학회지 Vol.29 No.5
가막만의 굴양식장 환경용량을 산정하기 위해 생태계 모델을 이용하여 월별 기초생산력을 산정하고 년간 식물플랑크톤의 생산량을 구하여 얼굴로서의 전환계수를 사용하여 굴의 최대 생산 가능량 즉 환경용량을 산정 하였다. 1994년 6월부터 1995년 3월까지 굴양식기간 동안의 가막만 전체에서의 식물플랑크톤 생산량은 181,594 tonC이였고 최대 알굴 생산가능량은 287,033 ton이었고 단위용적당 생산가능량은 $0.29kg/m^3/year$였다. 가막만내에서 굴양식시설이 되어 있는 공간에서의 년간 최대 알굴생산 가능량은 15,443 ton이고 1994년도 실제 알굴생산량은 4,532 ton이므로 굴양식장 환경용량의 약 $29\%$에 해당되었고 1987년도 생산량은 14,592 ton이므로 환경용량의 $95\%$에 해당되었다. 따라서 다른 굴양식장 관리조건만 허용된다면 가막만에는 굴양식시설대수를 증가시키면 생산량이 더 증가할 수 있는 해역으로 평가되었다. In order to estimate the carrying capacity of oyster culture ground in Kamak Bay, primary productivity was calculated using the ecosystem model. The allowable maximum oyster production, namely, the carrying capacity of Kamak Bay was estimated by using the annual phytoplankton production and conversion coefficient to oyster meat. On the environmental conditions of oyster culture period from lune, 1994 to March, 1995, phytoplankton production, the allowable maximum oyster production were estimated to be 181,594 tons of carbon and 287,033 tons of oyster meat, respectively. The allowable maximum oyster production was estimated to be 15,443 tons in the actual culture ground where oyster culture facilities are installed in Kamak Bay. In 1994 4,532 tons of actual oyster meat production was equivalent to ra. $29\%$ of carrying capacity, and in 1987 it was 14,592 tons equivalent to ca. $95\%$.