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http://dx.doi.org/10.5322/JES.2011.20.7.857

Variation of Groundwater Level and Recharge Volume in Jeju Island  

Park, Won-Bea (Jeju Development Institute)
Kim, Gee-Pyo (Jeju-Special Self-Governing Province Water Resource Headquarter)
Lee, Joon-Ho (Department of Earth and Marine Science, Jeju National University)
Moon, Duk-Chul (Jeju-Special Self-Governing Province Water Resource Headquarter)
Kim, Soo-Jeong (Jeju-Special Self-Governing Province Research Institute of Public Health and Environment)
Koh, Gi-Won (Jeju Leading Industry Development for Economic Region)
Pang, Sung-Jun (Department of Earth and Marine Science, Jeju National University)
Pang, Ig-Chan (Department of Earth and Marine Science, Jeju National University)
Publication Information
Journal of Environmental Science International / v.20, no.7, 2011 , pp. 857-872 More about this Journal
Abstract
The variation of groundwater level in Jeju Island is analyzed with the data of precipitation observed from 48 monitoring post and groundwater level observed from 84 monitoring wells during 2001 to 2009. The groundwater level rises in summer and falls in winter. The rise of groundwater level by precipitation is fast and small in the eastern region and slow and large in the western region. However, the speed of fall during the period of no rain is slower in the eastern region than in the western region. It tells that permeability is greater in the eastern region than in the western region. In this paper, we set up the base level of groundwater and calculate recharge volume between the base level and groundwater surface. During the period, the average recharge volume was $9.83{\times}10^9m^3$ and the maximum recharge volume was $2.667{\times}10^{10}m^3$ after the typhoon Nari. With these volume and the recharge masses obtained by applying the recharge ratio of 46.1%, estimated by Jeju Province (2003), the porous ratio over the whole Jeju Island is 16.8% in average and 4.6% in the case of maximum recharge volume just after typhoon Nari. A large difference in the two ratios is because that it takes time for groundwater permeated through the ground just after rain fall to fill up the empty porous part. Although the porous ratios over the whole Jeju Island obtained in this way has a large error, they give us the advantage to roughly estimate the amount of recharged groundwater mass directly from observing the groundwater level.
Keywords
Groundwater; Recharge volume; Groundwater base level; Porous ratio; Jeju Island;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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