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Chemical modification of sea water by submarine volcanism at Nishinoshima-Shintô Island |
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| Authors: | Yoshimasa Toyota Satoru Kanamori Michihiko Kodama Masahiro Furukawa Shiro Okabe |
| Institution: | 1. Faculty of Marine Science and Technology, Tokai University, 424, Shimizu, Japan 2. Water Research Institute, Nagoya University, 464, Nagoya, Japan 3. Japan Tetrapod Co., 300, Tsuchiura, Japan 4. Research Center, Kurita Industry Co., 240, Yokohama, Japan |
| Abstract: | Sea water samples, still hot from volcanic emanations were taken in a bay of Nishinoshima-Shintô Island just after volcanic activity had ceased and were analysed for borate-B, fluoride-F and bromide-Br. The hot water is considered to be formed by the conservative mixing of volcanic emanations with sea water, and the emanations containedCl, B, F andBr in the ratio of 1∶1.84×10?3∶0.474×10?3∶6.47×10?3 by weight. RatiosB/Cl andF/Cl can be used as effective measures of the contribution of volcanic emanations to sea water. |
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