Published by Misasa Medical Center, Okayama University Medical School
Published by Misasa Medical Center, Okayama University Medical School

<Formerly known as>
岡大三朝分院研究報告 (63号-72号) 環境病態研報告 (57号-62号)
岡山大学温泉研究所報告 (5号-56号) 放射能泉研究所報告 (1号-4号)

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Umemoto, Shunji
At Sekigane Hot-Spring, Tottori, Japan, where three hot-springs place side by side, the auther measured the variation of spring temperature, pH, Cl,- HCO(3)- and SO (4)-- content and the amount of flow, during and after, pumping suction of one hot-spring. About the variation of other hot-spring, immediately after the commencement of suction, the content of HCO(3)- decreased and that of Cl- and SO(4)-- increased. Then the increase of HCO(3)- content and the decrease of Cl- and SO(4)--contents appeared with the lapse of time. After stopping the suction, these changes in contents were reversed agaln, that is, the decrease of HCO(3)- and the increage of Cl- and SO(4)-- were observed. Immediately after the second suction was begun, HCO(3)- increased and Cl- and SO(4)-- decreased rapidly. The amount of flow increased only when the pumping suction stopped. At the hot-spring which was pumped, HCO(3)- and SO(4)-- contents decreased and the slight increase was observed in Cl- content. Of cource, only when the suction stopped, the amount of flow decreased. But at these hot-springs, the ratio of Cl-/SO(4)-- has always constant value, about 1.05. These results show that these three hot-springs belong to the same line and difference was observed only in the contamination with ground-watres.