Yoshitaka Sakata

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Depth dependence of permeability can appear in any geologic setting; however, vertical trends in alluvial gravel deposits are poorly understood because of the high variability of hydraulic conductivity K in monotonic sequences. This paper examines the sensitivity of depth-decaying permeability through heat transport simulation around a river's losing reach(More)
Oikamanai Lagoon in the Tokachi coastal region of Hokkaido, Japan, opens to the ocean several times a year due to water overflow across the sand bar triggered by rainfall or snowmelt runoffs of inflowing rivers. The water-budget calculation for the lagoon under closed conditions indicates that the net groundwater output occurs as confined groundwater,(More)
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