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이용두,함진규 제주대학교 환경연구소 2000 환경연구논문집 : 제주대 Vol.8 No.-
Based on the analysis and findmgs of the continuative measurement of the groundwater level data on three observation wells located at esatem part in the mid-mountain area, Jeju Island, the purpose of this study was to clarify the fluctuation characteristics of groundwater level response to rainfalls and groundwater recharge rate in the study area. According to the analysis of the groundwater levels rising with responses to rainfalls, it showed that began to rise between the 7th and 13th days after the rainfall, and then, continued to go up with the value of 1.9m to 8.3m for 15 to 16 days. This result suggested that infiltration occurs slowly in the recharge area rather than the coast area. Based o n the value of both the amount of net groundLvater recharge and infiltration rate; the recharge rate of well I is high with the amount of 32 % under the groundwater level is below 85m, the recharge rate of well II is 65% under the level is below 90m, the recharge rate of well Ill is 50% under the level is below 85m . This result shows that when the groundwater level rises above a certain level, the rising amount of level becomes low in spite of heavy rain.