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标题：ISOTOPE HYDROLOGY AND HYDROCHEMISTRY OF WATER RESOURCES IN THE BANANA PLAIN (MUNGO-DIVISION) OF THE CAMEROON VOLCANIC LINE
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作者：Andrew A. Ako ; Jun Shimada ; Kimpei Ichiyanagi 等
期刊名称：Journal of Environmental Hydrology (ältere Jahrgänge)
印刷版ISSN：1058-3912
电子版ISSN：1996-7918
出版年度：2010
卷号：18
出版社：IAEH
摘要：The isotope hydrology and hydrochemistry of surface and groundwater of the Banana Plain were studied to trace the origin of groundwaters and evaluate the major ion chemistry and geochemical processes controlling water composition. Water samples from rain, streams, lake, springs, wells and boreholes were collected and analyzed for major ions, stable isotopes, tritium and dissolved silica. ¹⁸O and ²H data indicate that groundwater has been recharged by meteoric water without significantly being affected by evaporative processes either during or after the recharge process. Evaluation of the groundwater residence time demonstrated that groundwater in the Banana Plain aquifers should be considered as a renewable water resource. In general the waters are Ca/HCO₃ and Ca-Mg-Na/HCO₃ dominated. Weathering of silicate minerals controls the concentration of major ions such as calcium, magnesium, sodium and potassium while NO₃ and Cl are of anthropogenic origin. Chemical composition of the groundwater in this area is influenced by rock-water interactions.