• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
• /
• 2006.04a
• /
• pp.82-86
• /
• 2006

조간대내 위치한 용천수에 해양의 조석이 미치는 영향을 검토하기 위하여 제주도 북제주군 조천읍 내 4개의 용천수에 대해 장 단기 모니터링 및 현장 관측 조사를 수행하였다. 이는 만조 시 해수가 용천수의 유출구를 통해 역류하거나, 혹은 다른 경로를 통해 어느정도의 영향을 받는지를 검토하기 위한 것이었다. 조사 결과 용천수의 유출은 조석에 영향을 받고 있으나 - 용천수의 유출량은 해양의 조석에 따른 수위변화에 반비례 관계 (신흥큰물 제외) - 용천수로의 역류를 통한 영향은 없는 것으로 확인되었다. 다만, 이러한 영향에 대해 정량적인 규명을 위해서는 추가적인 엄밀한 조사가 요구된다.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.10 no.8
• /
• pp.861-866
• /
• 2015

This study was aimed to detect area of Submaine Groundwater Discharged(: SGD) around Jeju island using by remote sensing. Sea Surface Temperature(SST) was identified using IR camera on Unmaned Aerial Vehicle(UAV) at Gimnyeong port in study area. Then SGD location was detected by comparing range of SGD temperature. Generally, range of SGD temperature is distributed 15 to 17 like underground water. The result, SGD location was detected by SST distribution of Gimnyeong port recorded by IR camera in the southwest of study area.

• Journal of the Korean earth science society
• /
• v.21 no.1
• /
• pp.81-92
• /
• 2000

The purpose of this study is to elucidate the characteristic of this study is of attitudinal variation of water quality for nine representative springs in the Halla mountain region. The evolutional processes of the spring water also have been studied. Results of hydrogeochemical analyses show that Gwaneumsa spring is very high in pH. The spring waters from Yungsil, Namguksunwon, Sungpanark Oremok and Gwaneumsa which springs situated lower than 1000m in altitude are relatively high concentrations in chloride, sulphate, nitrate nitrogen and sodium ions, indicating that they are affected by surrounding pollution sources. The concentrations of bicarbonate, sulphate and hydrogen ions in spring waters increase when the precipitation increases, whereas the concentrations of nitrate nitrogen, chloride and calcium ions decrease with increasing amounts of precipitation. The magnesium, sodium and electrical conductivity are nearly independent of the precipitation. The spring waters in the Halla mountain region belong to the groups of sodium or potassium type and bicarbonate type, except the Baegrogdam and Wiseorm spring water.

• Proceedings of the KAIS Fall Conference
• /
• 2010.11b
• /
• pp.576-578
• /
• 2010

현재 제주도의 주 수입원이 관광과 수자원이 되어감에 따라 용천수의 중요성이 부각되고 있다. 그러나 용천수의 관리에 문제가 발생하고 있어 이번 논문에서는 용천수 주변지역 원형 복원을 위한 송이 활용기법을 주제로 삼고 있으며 이번 실험을 통해 용천수 관리의 방안을 제시해 보고자 한다.

• Proceedings of the KAIS Fall Conference
• /
• 2010.11b
• /
• pp.583-586
• /
• 2010

최근에 제주의 생명수인 용천수에 대한 관심이 줄어들면서 이에 대한 문화적 가치가 잊혀지고, 보존이 제대로 이루어지지 않고 있다. 본 논문에서는 이러한 상황을 개선하고자 최근 각광받고 있는 위젯(Widget), 트위터(Twitter), 블로그(Blog) 등의 소셜네트워크를 통해 용천수에 대한 흥미롭고 정확한 정보를 전달하여 우리의 문화자원인 용천수를 보존하고 그 가치를 회복하는 방안을 제시하고자 한다.

• Journal of the Korean Chemical Society
• /
• v.36 no.5
• /
• pp.727-737
• /
• 1992

The water chemical characteristics and age dating of springwater in Cheju island had been investigated. C_1, C_4, C_7, C_9 springwaters were not affected by seawater intrusion by TDS and electrical conductivity, relationship of Cl and tritium, Cl and HCO_3 ratio, and total hardness and pseudo hardness. In this case only C_7 springwater was evaluated tasty and healthy mineral springwater by Hahimoto's Mineral Balance Index. On the basis of the mean tritium content of rainfalls and springwater, the average residence time of it, were calculated. Considering the hydrogeologic and hydrochemical condition, completely mixed model seems to be very fit. It was obtained the result that C_9 group springwater (C_{10}, C_{12}, C_{14}) was 1.2 months, C_7 springwater was 5.6 months, and deep groundwater C_{17} was 4 years.

• Journal of the Korean Society of Groundwater Environment
• /
• v.5 no.2
• /
• pp.66-79
• /
• 1998

This study purposes to elucidate the characteristics of local water quality and the evolutional process of the spring water have been studied with the samples from 55 selected springs, from the coast region to the Baegrogdam, a caldera lake of Halla mountain in Cheju Island. Results of hydrochemical analyses in the 55 spring water show that Gwaneumsa is pollued with high hydrogen concentration, and spring waters from Yusuarmchun, Jangsumul, Dukjisemmul, Sinch'onk'nmul, Youngchunsa, Woonyangchun, Harwontongmul, Dongheamul, Seakdalsengsu, Andukkyekok, Dotimul, Kinmul, Harkangmul and Jungkeummul are polluted by the pollution sources from the surface surrounding ground. Spring waters of Samyang3suwon, Meungbusa, Sernurungmul, Tosanmul, Jungkeummul, Kwakgimul, Aewolharmul, Konemul and Nokgomul are also polluted from the sea water intrusion. The electrical conductivity, pH and the concentration of nitrate nitrogen and bicarbonate increase when the precipitation increases, but the concentration of sodium, chloride and sulphate decrease when the precipitation increases. The concentrations of potassium, magnessium and calcium are nearly independent of the precipitaion. Quality characteristics of spring water show complicated group of spring water through piper's trilinear diagram. The high mountain region consists of groups of sodium or potassium type and bicarbonate type; the middle mountain region consists of groups of sodium or potassium type and no dominant type; the low mountain consists of groups of no dominant type and sulfate or nitrate type; the coast region consists of groups of sodium or potassium type and chloride type or no dominant type. These characteristics indicate that the spring waters are changed from bicarbonate type in the high and middle mountain regions into non-bicarbonate type in the coastal region, as the precipitated waters flow downslope.

• The Journal of Engineering Geology
• /
• v.34 no.2
• /
• pp.207-216
• /
• 2024

This study clarified the flow path of Choosan Spring, Nari Basin, Ulleung Island, South Korea. The orientations of faults and fractures developed on the inner edge of the caldera were identified as major factors affecting the flow path. The main flow paths include fracture zones oriented N-S and E-W. The spring also flows in a NE or NNE direction under the influence of the irregular shape of the caldera, which slopes to the NNE. Using Entrobacteriaceae species as tracers, it was found that Nari groundwater flows toward Choosan Yongchulso. However, the small number of water samples used in the analysis limits our understanding of the flow path from Sungin Valley to Nari Basin and Choosan Yongchulso.

• The Journal of Engineering Geology
• /
• v.12 no.4
• /
• pp.439-457
• /
• 2002

Sping waters at 60 sites and groundwaters at 6 wells in Mts. Geumjeong and Baekyang area were investigated for measuring nine physicochemical components (temperature, pH, Eh, EC, TDS, DO, salinity, alkalinity and discharge rate). The pH of spring waters ranges from 5.06 to 8.38, alkalinity from 7.93 to 102.21 mg/ㅣ, electrical conductance from 9.5 to $270{\;}\mu\textrm{s}/cm$, Eh from 64.2 to 685.9 mV, DO from 4.57 to 12.13 mg/l, and the discharge rate from 4.26 to 182.2 ml/s. General statistics was carried out to analyze statistical characteristics of those components. To compare the components with one another, regression analyses were carried out. And the components of spring waters were compared to those of groundwaters. Kriging was used to estimate the spatial variation of DO, pH, Eh, EC, alkalinity and discharge rate in the study area. The kriged isopleth maps were made using normalized kriged values to find anomalies of the physicochemical components and to compare anomalies of different components.

• Economic and Environmental Geology
• /
• v.44 no.2
• /
• pp.135-152
• /
• 2011

Nitrate concentrations in springs at the southern slope of Jeju Island were predicted using multiple linear regression (MLR) of spatial variables including hydrogeological parameters and land use characteristics. Springs showed wide range of nitrate concentrations from <0.02 to 86 mg/L with a mean of 20 mg/L. Spatial variables were generated for the circular buffer when the optimal buffer radius was assigned as 400 m. Selected regression models were tested using the p values and Durbin-Watson statistics. Explanatory variables were selected using the adjusted $R^2$, Cp (total squared error) and AIC (Akaike's Information Criterion), and significance. In addition, mutual linear relations between variables were also considered. Small portion of springs, usually <10% of total samples, were identified as outliers indicating limitations of MLR using circular buffers. Adjusted $R^2$ of the proposed models was improved from 0.75 to 0.87 when outliers were eliminated. In particular, the areal proportion of natural area had the greatest influence on the nitrate concentrations in springs. Among anthropogenic land uses, the influence of nitrate contamination is diminishing in the following order of orchard, residential area, and dry farmland. It is apparent quality of springs in the study area is likely to be controlled by land uses instead of hydrogeological parameters. Most of all, it is worth highlighting that the contamination susceptibility of springs is highly sensitive to nearby land uses, in particular, orchard.