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Geohydrologic interpretations of a volcanic island from environmental isotopes
Author(s) -
Davis George H.,
Lee Chang Kun,
Bradley Edward,
Payne B. R.
Publication year - 1970
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr006i001p00099
Subject(s) - volcano , groundwater , hydrology (agriculture) , geology , residence time (fluid dynamics) , isotope , residence , environmental science , geochemistry , geotechnical engineering , physics , quantum mechanics , demography , sociology
Isotopic analyses of ground waters collected from 1966 through 1968 on Cheju Island, Republic of Korea, have proved helpful in interpreting the general hydrologic relations and in developing a model of the ground‐water flow system in the permeable volcanic rocks of the island. Comparison of tritium and stable isotope (D‐ 18 O) contents provided a basis for a model of the ground‐water flow regimes. Time variability of these isotopes determined by repeated samplings provided the basis for estimates of mean residence time of ground waters, ranging from about 2 to 9 years. Although the results are only approximate because simplified models were used, they can be of substantial assistance in planning further hydrologic investigations and appraising the feasibility of ground‐water development.