Results 191 to 200 of about 132,968 (237)

Tracing the Neovolcanic zone along the sediment-covered regions of the Red Sea Rift. [PDF]

Sci Rep
Preine J, Augustin N, Mitchell NC, van der Zwan FM, Wölfl AC, Schade M, Izzeldin YA, Osman MAM, Hübscher C.   +8 more
europepmc   +1 more source

Toxic natural pollution at Ijen crater volcano: Environmental characteristics and health risk assessment. [PDF]

Toxicol Rep
Susetyo SH, Abidin AU, Sano K, Yoneda M, Matsui Y.   +4 more
europepmc   +1 more source

Quantitative experimental modeling of fragmentation during phreatomagmatic and phreatic eruptions

, 2012
openaire   +1 more source

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Dissolved gases in hydrothermal (phreatic) and geyser eruptions at Yellowstone National Park, USA

Geology, 2016
Multiphase and multicomponent fluid flow in the shallow continental crust plays a significant role in a variety of processes over a broad range of temperatures and pressures. The presence of dissolved gases in aqueous fluids reduces the liquid stability field toward lower temperatures and enhances the explosivity potential with respect to pure water ...
Shaul Hurwitz, R Blaine Mccleskey
exaly   +2 more sources

The Onset, Middle, and Climax of Precursory Hydrothermal Intrusion of the 2018 Phreatic Eruption at Kusatsu‐Shirane Volcano

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, Akihiko Terada, Rina Noguchi, W. Kanda, Hideki Ueda, Hiroshi Aoyama, T. Ohkura, Yasuo Ogawa, T. Tanada   +8 more
semanticscholar   +1 more source

Three‐Dimensional Resistivity Structure of Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan: Relationship to Shallow Seismicity, Surface Uplift, and a Small Phreatic Eruption

Geophysical Research Letters, 2018
Iwo‐yama volcano, part of the Kirishima Volcanic Complex, has recently shown signs of unrest. We conducted a hypocenter relocation of shallow earthquakes and broadband magnetotelluric measurements around Iwo‐yama.
Kaori Tsukamoto, Koki Aizawa, Keita Chiba   +2 more
exaly   +2 more sources

The mechanism of phreatic eruptions

Journal of Geophysical Research: Solid Earth, 1995
We investigate the mechanism for initiating phreatic eruptions following the emplacement of a shallow magmatic intrusion into water‐saturated permeable rock which contains subsidiary low‐permeability crack networks and disconnected cracks. Heat from the intrusion causes the local groundwater to boil and ascend through the main permeable crack network ...
Leonid N. Germanovich, Robert P. Lowell
openaire   +1 more source

Towards monitoring phreatic eruptions using seismic noise

2023
Phreatic and hydrothermal eruptions remain among the most difficult to forecast. The frequent absence of clear precursor signals challenges volcanologists' ability to provide timely and accurate hazard advice. They remain poorly understood and have recently caused human fatalities.
Corentin Caudron, Társilo Girona, Thomas Lecocq, Alberto Ardid, David Dempsey, Alexander Yates   +5 more
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Phreatic eruptions of Ruapehu: April 1975

New Zealand Journal of Geology and Geophysics, 1979
Abstract A major phreatic eruption occurred in Ruapehu Crater Lake, North Island, New Zealand, at 1975 April 24d, 03h 59m, N.Z.S.T. Only nine minutes of volcanic-seismic activity preceded the eruption, but crater dilation had been measured by a geodetic survey two weeks earlier. Bad weather prevented observation of the eruption.
I. A. Nairn, C. P. Wood, C. A. Y. Hewson
openaire   +1 more source

Imaging the Source Region of the 2015 Phreatic Eruption at Owakudani, Hakone Volcano, Japan, Using High‐Density Audio‐Frequency Magnetotellurics

Geophysical Research Letters, 2020
Since phreatic eruptions often occur near the surface, it is important to understand the shallow subsurface structure of a volcano to clarify the eruption mechanism.
K. Seki, W. Kanda, K. Mannen, S. Takakura, T. Koyama, R. Noguchi, Y. Yukutake, M. Ishikawa, M. Fukai, M. Harada, Y. Abe   +10 more
semanticscholar   +1 more source