Hydrogen isotopic compositions of hydrogen and methane from some volcanic areas in northeastern Japan

Kiyosu, Yasuhiro

doi:10.1016/0012-821x(83)90069-9

Cited by 41 publications

(25 citation statements)

References 23 publications

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“…The water vapour con tents were always >90 vol.%. The gases can be classified into three types: high temperature fu marolic gases (>_200°C) containing HCl (Matsuo, (Matsuo, 1961;Mizutani, 1978), 2: Nigorikawa (Asada, 1993), 3: Tamagawa (Kiyosu, 1983), 4: Matsukawa (Kiyosu, 1983), 5: Takinoue (Kiyosu and Yoshida, 1988), 6: Onikobe (Kiyosu, 1986), 7: Issaikyo (Kiyosu, 1983), 8: Nasu (Kiyosu, 1983), 9: Kusatsu Shirane (Asada, 1993), 10: Myoko (Asada, 1991), 11: Tateyama (Asada, 1991(Asada, , 1993, 12: Ontake (Asada, 1993), 13: Kuju Iwoyama (Mizutani et al, 1986), and 14: Unzen (Asada, 1993). Squares, circles and triangles indicate high temperature fumarolic gases: 1, Usu (Matsuo et al, 1982), 13, Satsuma-Iwojima (Matsuo et al, 1975), low temperature fumarolic gases: 3, 7-12, 14, and geothermal gases: 2, 4, 5, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…1. More detailed information on the geol ogy and geochemistry of these areas was summa rized by Mizutani (1978), Mizutani et al (1986), Kiyosu (1983Kiyosu ( , 1986, Kiyosu and Yoshida (1988) and Asada (1993). The sampling method used was a modification of that discussed by Ozawa (1966).…”

Section: Samplingmentioning

confidence: 99%

“…The dissolved H2S was imme diately fixed as CdS in order to prevent oxidation over short time periods (Kiyosu, 1983). The fu marolic temperature at the time of the gas collec tion was determined with the use of a thermo couple and/or a mercury thermometer.…”

Section: Samplingmentioning

confidence: 99%

“…The analytical method of water, carbon dioxide, sulfur compounds (SO2, H2S), and chloride ab sorbed into KOH, has been reported in detail elsewhere (Mizutani, 1978;Viglino et al, 1985;Kiyosu, 1983). The alkali residual gases such as H2, N2, 02 and CH4 were analyzed by gas chro matography with a thermal conductivity detector (Kiyosu, 1983).…”

Section: Analytical Proceduresmentioning

confidence: 99%

“…The alkali residual gases such as H2, N2, 02 and CH4 were analyzed by gas chro matography with a thermal conductivity detector (Kiyosu, 1983). On the basis of 02 contents, a correction was made for air contamination in the gas samples.…”

Section: Analytical Proceduresmentioning

confidence: 99%

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Light hydrocarbons in volcanic gases from the Japanese island arc.

Kiyosu

Asada

1995

Geochem. J.

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Thermodynamic calculations are made for the reactions of inorganic hydrocarbons under redox condi tion governed by a variety of mineral buffer systems. The results indicate that the amounts of alkanes and alkene depend essentially on the oxygen fugacity rather than temperature or other factors such as fH2o and fco2 . The concentrations of volcanic light hydrocarbons are probably controlled by redox conditions during the discharge process as well as equilibrium with magma.

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Section: Resultsmentioning

confidence: 99%

Section: Samplingmentioning

confidence: 99%

Section: Samplingmentioning

confidence: 99%

Section: Analytical Proceduresmentioning

confidence: 99%

Section: Analytical Proceduresmentioning

confidence: 99%

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Light hydrocarbons in volcanic gases from the Japanese island arc.

Kiyosu

Asada

1995

Geochem. J.

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Hydrogen: Inorganic Chemistry

Kakiuchi

2005

Encyclopedia of Inorganic Chemistry

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The properties of behavior of hydrogen and its isotopes, and the various applications of hydrogen are presented and discussed. The natural occurrence, preparation, use, and analysis of hydrogen are described. The atomic properties of protium (H), deuterium (D), and tritium (T) and the major physical properties of isotopic molecular hydrogen and isotopic water molecules are compared, and the distribution of deuterium and tritium in nature is geochemically discussed. Isotope effects concerning the vapor pressure and the fractionation factor of hydrogen and water molecules in equilibrium are explained, and are expanded in aqueous solutions. The chemical properties of atomic and ionized hydrogen, the reactions of molecular hydrogen, and the absorption and adsorption of hydrogen are compiled. The topics of the hydrogen spectroscopy, the ortho‐ and para‐hydrogen, the hydrogen in semiconductor, and the hydrogen energy are also compiled.

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Remote determinations on fumarole outlet temperatures in an eruptive volcano

Tsunogai

Cheng

Ito

et al. 2016

Geophysical Research Letters

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Direct measurement of the fumarole outlet temperature in active volcanoes is impractical. Therefore, we used an aircraft to sample H2 in the volcanic plume ejected from Sakurajima volcano to remotely estimate the highest fumarolic temperatures of the volcano based on hydrogen isotopic fractionation between H2 and magmatic H2O. We successfully estimated that the δD of the fumarolic H2 in September and December 2014 was −135 ± 13‰ and −113 ± 11‰, respectively, and that the corresponding highest outlet temperatures were 1050 ± 120°C and 1199 ± 139°C. Although the temperatures were higher than those determined by using infrared remote sensing, we concluded that they are more reliable estimates of the highest fumarole outlet temperatures. Combined with plume sampling by using aircraft, remote temperature sensing based on the δD of H2 in volcanic plumes can be widely applied to active volcanoes to determine the highest fumarole outlet temperatures.

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Hydrogen isotopic compositions of hydrogen and methane from some volcanic areas in northeastern Japan

Cited by 41 publications

References 23 publications

Light hydrocarbons in volcanic gases from the Japanese island arc.

Light hydrocarbons in volcanic gases from the Japanese island arc.

Hydrogen: Inorganic Chemistry

Remote determinations on fumarole outlet temperatures in an eruptive volcano

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