RELATION BETWEEN HALOGEN CONTENTS OF HOT SPRING WATER [I]

Abstract

Bromine and iodine contents are compared with chlorine contents on many hot spring waters in the whole area of Beppu Spa. Interesting conditions are then appeared that various kinds of hot waters in Beppu are fundamentally formed by only one kind of underground hot water, composition of which is similar to that of boiling springs. Variations of other chemical characters may be supposed to be given chiefly in the secondary process of mixing with other groundwater or intruding sea water. In Shirahama Hot Springs, chemical character of original hot water is obtained by extracting the contribution of chemical elements from mixing sea water. The result, in which contents of iodine and chlorine for original hot water thus obtained show the similar relation as in Beppu, gives the interest supposition for causing uniformity of relation between halogen contents in the course of producing liquid state under geothermal activity. A few examples of halogen contents in other hot springs are also illustrated.