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KMID : 1024520080170020257
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Journal of the Environmental Sciences
2008 Volume.17 No. 2 p.257 ~ p.267
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Time Series and Groundwater Recharge Analyses Using Water Fluctuation Data in Mountain Geumjeong Area
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Kim Tae-Won
Hamm Se-Yeong
Cheong Jae-Yeol
Ryu Sang-Min
Lee Jeong-Hwan
Sohn Keon-Tae
Kim Nam-Hoon
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Abstract
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Groundwater recharge characteristics in a fractured granite area, Mt. Geumjeong, Korea. was interpreted using bedrock groundwater and wet-land water data. Time series analysis using autocorreclation, cross-correlation and spectral density was conducted for characterizing water level variation and recharge rate in low water and high water seasons. Autocorrelation analysis using water levels resulted in short delay time with weak linearity and memory. Cross-correlation function from cross-correlation analysis was lower in the low water season than the high water season for the bedrock groundwater. The result of water level decline analysis identified groundwater recharge rate of about 11% in the study area.
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KEYWORD
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Groundwater recharge, Recharge area, Time series analysis, Water-level decline curve
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