Variations in Isotopic and Chemical Compositions of Fumarolic Gases from Yakedake Volcano, Honshu, Japan
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- SUGIURA Tutomu
- Department of Chemistry, Aichi Kyoiku University
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- MIZUTANI Yoshihiko
- Department of Earth Sciences, Faculty of Science, Nagoya University
Bibliographic Information
- Other Title
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- 焼岳における噴気ガスの同位体および化学組成の変化
- ヤケダケ ニ オケル フンキ ガス ノ ドウイタイ オヨビ カガク ソセイ ノ
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Abstract
Variations in temperature, chemical and isotopic compositions of fumarolic gases discharged from the summit of Yakedake volcano, Honshu, Japan, have been observed since 1965, 2 years after the 1962-63 eruption (phreatic explosions with mud flows). The temperature of 168℃ was recorded in 1965, and has been gradually decreasing since then. The existence of appreciable amounts of H2, HCl and S02 in the fumarolic gases suggests the supply of high temperature gases from magma. The hydrogen and oxygen isotopic compositions of fumarolic condensates suggest that the fumarolic gases are mixtures of magmatic gases and local meteoric water, and that the contribution of local meteoric water to the fumarolic gases has been increasing since 1965. The 1962-63 eruption was possibly caused by the supply of high temperature volcanic gases to the surface mud reservoir which had been previously formed by the fumarolic activity.
Journal
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- SECOND SERIES BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN
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SECOND SERIES BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 23 (4), 241-248, 1978
The Volcanological Society of Japan
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Details 詳細情報について
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- CRID
- 1390001206120417664
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- NII Article ID
- 110002995796
- 10010519746
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- NII Book ID
- AN10512786
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- ISSN
- 04534360
- 24330590
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- NDL BIB ID
- 2034904
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed