Results 81 to 90 of about 139,835 (226)

Numerically Efficient Model for the Nucleation, Growth, and Coalescence of Bubbles in Magma

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract We present a numerical model to describe the nucleation, growth, and coalescence of bubbles in a decompressed magma. The new model enables us to calculate the bubble size distribution (BSD) at a low computational cost by taking the bubble mass as a variable.
Masatoshi Ohashi
wiley   +1 more source

Using Lake Sediment Cores to Improve Records of Volcanism at Aluto Volcano in the Main Ethiopian Rift

Geochemistry, Geophysics, Geosystems, 2018
Aluto is a silicic volcano in central Ethiopia, flanked by two large population centers and home to an expanding geothermal power plant. Here we present data from two lake sediment cores sampled 12 and 25 km from the volcano, which record at least 24 ...
K. McNamara, K. V. Cashman, A. C. Rust, K. Fontijn, F. Chalié, E. L. Tomlinson, G. Yirgu   +6 more
doaj   +1 more source

Common processes at unique volcanoes – a volcanological conundrum

Frontiers in Earth Science, 2014
An emerging challenge in modern volcanology is the apparent contradiction between the perception that every volcano is unique, and classification systems based on commonalities among volcano morphology and eruptive style.
Katharine eCashman, Juliet eBiggs
doaj   +1 more source

Pre-explosive conduit conditions of the 1997 Vulcanian explosions at Soufrière Hills Volcano, Montserrat: I. Pressure and vesicularity distributions [PDF]

, 2010
International audienceAn authoritative case of Vulcanian eruptive dynamics is the series of 88 explosions that occurred between August and October 1997 at Soufrière Hills volcano on Montserrat Island.
Arbaret, Laurent, Bourdier, Jean-Louis, Burgisser, Alain, Giachetti, Thomas, Poussineau, Stéphane   +4 more
core   +3 more sources

Ionospheric Disturbances During the 4 December 2015, Mt. Etna Eruption

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract This study presents the detection and characterization of co‐volcanic ionospheric disturbances (CVIDs) associated with Mt. Etna's large‐scale lava fountain (Italy). Leveraging a dense and proximal GNSS network, we identify local Total Electron Content (TEC) perturbations extending up to ∼ ${\sim} $200 km south/southwest of the vent.
F. Ferrara, M. Ravanelli, A. Bonforte, V. Capparelli, V. Carbone, S. Scollo, L. Mereu, A. Cannata   +7 more
wiley   +1 more source

The color systematics of volcanic ashfall samples in estimating eruption sequences: a case study of the 2017–2018 eruption at Shinmoe-dake, Kirishima volcano, Southwest Japan

Earth, Planets and Space
The color of pyroclasts is fundamental, because it reflects various magma properties and eruption processes, including particle morphology, chemistry, and petrological characteristics.
Taketo Shimano, Yuki Suzuki, Atsushi Yasuda, Fukashi Maeno, Takahiro Miwa, Masashi Nagai, Setsuya Nakada, Michihiko Nakamura   +7 more
doaj   +1 more source

Stronger or longer: Discriminating between Hawaiian and Strombolian eruption styles [PDF]

, 2016
The weakest explosive volcanic eruptions globally, Strombolian explosions and Hawaiian fountaining, are also the most common. Yet, despite over a hundred years of observations, no classifications have offered a convincing, quantitative way of demarcating
Andronico, D, Carey, RJ, Edmonds, M, Gaudin, D, Gonnermann, HM, Houghton, BF, Orr, TR, Patrick, MR, Pistolesi, M, Scarlato, P, Swanson, DA, Taddeucci, J   +11 more
core   +3 more sources

Enhanced Continental Weathering Contributed to the Termination of the Middle Miocene Climatic Optimum

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract The Middle Miocene Climatic Optimum (MMCO, ca. 17.0 to 14.7 million years (Myr) ago) is a period of global warming that could be relevant to future projections for 2100 AD. However, the mechanism of atmospheric CO2 removal during this interval, particularly, whether silicate weathering is critically involved, is currently unclear.
Jiabin Wu, Licheng Guo, Shangfa Xiong, Shiling Yang, Xiaoxiao Yang, Yu Zhang, Man Zhang, Qiaowen Zhang, Jingyi Cui, Wenying Jiang, Bin Zhang   +10 more
wiley   +1 more source

Transition from magmatic to phreatomagmatic eruptions in Young Ciremai volcano, Indonesia: insights from stratigraphy, componentry, and textural analysis of tephra deposits

Earth, Planets and Space
Vulcanian eruptions, characterized by intermediate magma compositions, pose significant hazards due to their potential for both magmatic and phreatomagmatic fragmentation.
Wildan N. Hamzah, Tsukasa Ohba, Muhammad Andriansyah Gurusinga, Mradipta L. A. Moktikanana, Jananda N. Indriyanto, Takashi Hoshide, Mirzam Abdurrahman, Idham A. Kurniawan, Fadlin   +8 more
doaj   +1 more source

Ceboruco hazard map: part I - definition of hazard scenarios based on the eruptive history

Journal of Applied Volcanology, 2019
Of the 48 volcanoes in Mexico listed as potentially active by the National Center for Disaster Prevention (CENAPRED), Ceboruco, located in the western Trans-Mexican Volcanic Belt, is considered among the 5 most hazardous.
Katrin Sieron, Dolors Ferres, Claus Siebe, Lucia Capra, Robert Constantinescu, Javier Agustín-Flores, Karime González Zuccolotto, Harald Böhnel, Laura Connor, Charles B. Connor, Gianluca Groppelli   +10 more
doaj   +1 more source