Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama: Part 1. The isotopic and chemical characteristics of the hot spring water

Takafumi Furukawa; Akira Ueda

doi:10.1016/j.jvolgeores.2021.107179

Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama: Part 1. The isotopic and chemical characteristics of the hot spring water

Takafumi Furukawa, Akira Ueda^*

^*Corresponding author for this work

Faculty of Science

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Isotopic (D, ³H, ¹⁸O, and ³⁴S) and chemical studies on the hyper-acidic hot spring waters (Obuki; pH 1.1), other hot spring waters, and fumarolic gases taken in 1990–1992 at Tamagawa Hot Spring, Akita, Japan were undertaken to investigate the source and behavior of sulfur compounds. The Obuki hot spring water discharges after mixing of magmatic gas with meteoric water and underground vapor–liquid separation. SO₄²⁻ and H₂S was formed by the disproportionation reaction of SO₂ at around 220 °C. Tritium concentration indicated that the subsurface residence time of the Obuki hot spring water is 13–25 years. In the downstream of the Obuki hot spring, there are many hyper-acidic hot springs that are diluted by meteoric water and flow as a river (Yukawa).

Original language	English
Article number	107179
Journal	Journal of Volcanology and Geothermal Research
Volume	412
DOIs	https://doi.org/10.1016/j.jvolgeores.2021.107179
State	Published - 2021/04

Keywords

Disproportionation
Hyper-acidic hot spring
Isotope
Source
Sulfur

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

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10.1016/j.jvolgeores.2021.107179

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title = "Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama: Part 1. The isotopic and chemical characteristics of the hot spring water",

abstract = "Isotopic (D, 3H, 18O, and 34S) and chemical studies on the hyper-acidic hot spring waters (Obuki; pH 1.1), other hot spring waters, and fumarolic gases taken in 1990–1992 at Tamagawa Hot Spring, Akita, Japan were undertaken to investigate the source and behavior of sulfur compounds. The Obuki hot spring water discharges after mixing of magmatic gas with meteoric water and underground vapor–liquid separation. SO42− and H2S was formed by the disproportionation reaction of SO2 at around 220 °C. Tritium concentration indicated that the subsurface residence time of the Obuki hot spring water is 13–25 years. In the downstream of the Obuki hot spring, there are many hyper-acidic hot springs that are diluted by meteoric water and flow as a river (Yukawa).",

keywords = "Disproportionation, Hyper-acidic hot spring, Isotope, Source, Sulfur",

author = "Takafumi Furukawa and Akira Ueda",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = apr,

doi = "10.1016/j.jvolgeores.2021.107179",

language = "英語",

volume = "412",

journal = "Journal of Volcanology and Geothermal Research",

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publisher = "Elsevier B.V.",

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T2 - Part 1. The isotopic and chemical characteristics of the hot spring water

AU - Furukawa, Takafumi

AU - Ueda, Akira

PY - 2021/4

Y1 - 2021/4

N2 - Isotopic (D, 3H, 18O, and 34S) and chemical studies on the hyper-acidic hot spring waters (Obuki; pH 1.1), other hot spring waters, and fumarolic gases taken in 1990–1992 at Tamagawa Hot Spring, Akita, Japan were undertaken to investigate the source and behavior of sulfur compounds. The Obuki hot spring water discharges after mixing of magmatic gas with meteoric water and underground vapor–liquid separation. SO42− and H2S was formed by the disproportionation reaction of SO2 at around 220 °C. Tritium concentration indicated that the subsurface residence time of the Obuki hot spring water is 13–25 years. In the downstream of the Obuki hot spring, there are many hyper-acidic hot springs that are diluted by meteoric water and flow as a river (Yukawa).

AB - Isotopic (D, 3H, 18O, and 34S) and chemical studies on the hyper-acidic hot spring waters (Obuki; pH 1.1), other hot spring waters, and fumarolic gases taken in 1990–1992 at Tamagawa Hot Spring, Akita, Japan were undertaken to investigate the source and behavior of sulfur compounds. The Obuki hot spring water discharges after mixing of magmatic gas with meteoric water and underground vapor–liquid separation. SO42− and H2S was formed by the disproportionation reaction of SO2 at around 220 °C. Tritium concentration indicated that the subsurface residence time of the Obuki hot spring water is 13–25 years. In the downstream of the Obuki hot spring, there are many hyper-acidic hot springs that are diluted by meteoric water and flow as a river (Yukawa).

KW - Disproportionation

KW - Hyper-acidic hot spring

KW - Isotope

KW - Source

KW - Sulfur

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U2 - 10.1016/j.jvolgeores.2021.107179

DO - 10.1016/j.jvolgeores.2021.107179

M3 - 学術論文

AN - SCOPUS:85100631172

SN - 0377-0273

VL - 412

JO - Journal of Volcanology and Geothermal Research

JF - Journal of Volcanology and Geothermal Research

M1 - 107179

ER -

Tamagawa hyper-acidic hot spring and phreatic eruptions at Mt. Akita-Yakeyama: Part 1. The isotopic and chemical characteristics of the hot spring water

Abstract

Keywords

ASJC Scopus subject areas

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