Results 111 to 120 of about 544 (134)
GEOCHEMICAL JOURNAL, 1994 Crater lakes with active subaqueous fumaroles often contain molten sulfur pools on the lake floor. Volcanic gases passing through the sulfur pools carry hollow spherules of solidified molten sulfur to the surface of crater lakes. This sulfur dissolves SO2 and H2S gases and releases these gases into the water. The sulfur also contains homocyclic sulfur (
Bokuichiro Takano +2 more
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Water, heat and chloride budgets of the crater lake, Yugama at Kusatsu-Shirane volcano, Japan.
GEOCHEMICAL JOURNAL, 1994 Significant changes in temperature and water chemistry were observed in Lake Yugama, a crater lake at Kusatsu-Shirane volcano, Japan, between 1988 and 1993. Heat, water and chloride budgets were evaluated with a box model. Until 1989, heat and chloride inputs into the lake were 3∼10 MW and 1∼3.5 tons/day, respectively; but these increased to 19–25 MW ...
T.Ohba, J.Hirabayashi, K.Nogami
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Long-term thermal activity revealed by magnetic measurements at Kusatsu-Shirane volcano, Japan
Journal of Volcanology and Geothermal Research, 2014Abstract Repeated geomagnetic measurements commenced around the three summit crater lakes of Kusatsu-Shirane volcano (Yugama, Mizugama and Karegama lakes) in 1976 and continuous measurements commenced in 1990. We reviewed and analyzed these geomagnetic data acquired over the 34 years starting in 1978.
Kosuke Takahashi, Ikuko Fujii
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Journal of Volcanology and Geothermal Research, 2022 Yasuo Matsunaga +4 more
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Journal of Geophysical Research: Solid Earth, 2023
Triggering intrusions of phreatic eruptions are often observed as seismic and ground deformation signals on a time scale of minutes. The current understanding of hydrothermal intrusions still needs improvement to obtain insight into the eruption scale ...
Taishi Yamada +8 more
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Triggering intrusions of phreatic eruptions are often observed as seismic and ground deformation signals on a time scale of minutes. The current understanding of hydrothermal intrusions still needs improvement to obtain insight into the eruption scale ...
Taishi Yamada +8 more
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Carbon and helium isotopic ratios at Kusatsu-Shirane Volcano, Japan
Applied Geochemistry, 1994Abstract We have measured the chemical compositions, He/Ne ratios, He and C isotopes of 14 gas samples collected from the crater lake, fumaroles and hot springs associated with Kusatsu-Shirane Volcano, Japan. The 3 He/ 4 He ratio decreases with increasing distance from the central crater of the volcano to the sampling site whereas the δ 13 C value of
Yuji Sano +3 more
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Isotope ratios of lake water in the active crater at Kusatsu-Shirane volcano, Japan
Water-Rock Interaction, 2021T. Ohba, K. Nogami, J. Hirabayashi
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