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KMID : 1024520000090030241
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Journal of the Environmental Sciences
2000 Volume.9 No. 3 p.241 ~ p.252
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Hydrochemical characteristics of ground and geothermal waters in the Haeundae hot-spring area, Pusan, Korea
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Shim Hyong-Soo
Hamm Se-Yeong
Sung Ig-Hwan
Lee Byeong-Dae
Cho Byong-Wook
Hwang Jin-Yeon
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Abstract
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Twenty-two water samples(fifteen groundwater and seven geothermal water samples) were collected to elucidate chemical characteristics of the ground and geothermal waters in the Haeundae hot spring area and its vicinity. Major and honor elements were analyzed for ground and geothermal water samples. The concentrations of , , , , , and were higher in the geothermal water samples than the groundwater samples except ions. Based on the contents of Fe, Zn, Cu, Al, Mn and Pb, some of the ground and geothermal water samples are contaminated by anthropogenic sources. The ground waters shown on the Piper diagram belong to type, while the geothermal waters Na-Cl type. The graphs of versus , indicate that the groundwater is related partly with mineral-water reaction and partly with anthropogenic contamination, while the geothermal water is related with saline water. On the phase stability diagram, groundwater and thermal water mostly fall in the field of stability of kaolinite. This indicates that the ground and geothermal waters proceed with forming kaolinite. Factor and correlation analyses were carried out to simplify the physicochemical data into grouping some factors and to find interaction between them. Based on the Na-K, Na-K-Ca and Na-K-Ca-Mg geothermometers and silica geothermometers, the geothermal reservoir is estimated to have equilibrium temperature between 125${circ}C$ and 160${circ}C$.
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KEYWORD
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Haeundae hot-spring, geochemical characteristics, water-rock interaction, factor analysis, geothermometers
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