同位元素를 利用한 濟州地域 水資源에 關한 硏究 (第1報) = Environmental Isotope-Aided Studies on Water Resources in the Region of Cheju (Ⅰ)

국문 초록 (Abstract)

濟州市地域의 地下水 資源保護 및 開發을 위하여 1983年度 4, 5, 6月에 海水 3개地域, 湧泉水 3개地點, 地下水 10개地點에서 물試料를 採取하여 陽이온 및 陰이온 그리고 tritium과 deuterium含量을 分析하여 地下水의 水質 및 海水의 地下水로의 浸透如否를 調査하였다.
濟州市 中西部地域 地下水는 tritium含量이 20TU. deuterium이 -46 per mill인 NaHCO₃型 深層地下水이고, 濟州市 南部地域의 湧泉水와 地下水는 tritium含量이 15TU, deuterium이 -39 per mill인 CaHCO₃型 火山性 淺層地下水로서 降水의 영향을 비교적 많이 받는 것으로 나타났다. 濟州市 海岸地域의 地下水는 시기(5, 6月)에 따라서 NaCl型이 된것도 있으나 tritium 및 deuterium水準으로 보다 그 原因은 海水의 浸透現象이 아닌 都市下水에 의한 것으로 추정된다. 龍頭岩 근처의 海水의 水質은 湧泉水에 의하여 영향을 많이 받고 있었다.

다국어 초록 (Multilingual Abstract)

The investigation was carried out by analyzing water types and measuring the environmental isotopes(tritium and deuterium) for development of water resources and protection of ground waters from sea water intrusion. The water samples were taken monthly from April to June. 1983 from sixteen sites in the Cheju metropolitan area; three seas, three springs, and ten ground waters.
The ground water in the midwest area of the city contained 20 TU of tritium and -46 per mill of deuterium, classified as the NaHCO₃type of ground water, generally deep seated.
The spring water and ground water in the southern part of the city contained 15 TU of tritium and -39 per mill of deuterium, and appeared to be the CaHCO₃type of shallow ground water, easily affected by precipitation.
The results of tritium and deuterium analyses showed that the ground waters in the coastal area were not affected by sea water intrusion, although they changed from NaHCO₃or CaHCO₃type to NaCl type in May and June. It is condluded that the high Na and Cl content in those ground waters might come from municipal sewage. The sea water in the Yong-duam area was influenced by spring water.