Results 31 to 40 of about 22,175 (200)
Growth rates of lava domes with respect to viscosity of magmas
Annals of Geophysics, 2005 In the discussion of lava dome formation, viscosity of magma plays an important role. Measurements of viscosity of magmas in field and laboratory are briefly summarized.
I. Yokoyama
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Using the level set method to model endogenous lava dome growth [PDF]
, 2007 Modeling volcanic phenomena is complicated by free-surfaces often supporting large rheological gradients. Analytical solutions and analogue models provide explanations for fundamental characteristics of lava flows.
Balmforth +19 more
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Magma degassing and intermittent lava dome growth [PDF]
Geophysical Research Letters, 2008 After its 1980 explosive eruption, Mount St Helens developed a lava dome that grew intermittently for several years. Each growth episode was followed by a long repose, suggesting that the magma column above the reservoir was in hydrostatic equilibrium. A mechanism allowing an increasingly thicker dome is proposed.
Taisne, B., Jaupart, C.
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Dome growth, collapse, and valley fill at Soufrière Hills Volcano, Montserrat, from 1995 to 2013: Contributions from satellite radar measurements of topographic change [PDF]
, 2016 Frequent high-resolution measurements of topography at active volcanoes can provide important information for assessing the distribution and rate of emplacement of volcanic deposits and their influence on hazard.
Anderson +13 more
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Studying the influence of a solid shell on lava dome growth and evolution using the level set method [PDF]
, 2007 A finite element formulation of the level set method, a technique to trace flow fronts and interfaces without element distortion, is presented to model the evolution of the free surface of a spreading flow for a highly viscous medium on a horizontal ...
Alina Jane Hale +31 more
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Indikasi Munculnya Kubah Lava Berdasarkan Rekaman Seismik [PDF]
, 2009 Http://dx.doi.org/10.17014/ijog.vol4no2.20092In the last two decades, there are six volcanoes erupting and are ended up with the growth of lava dome at the crater. Among them, formerly there are three volcanoes that have crater lakes.
Wittiri, S. R. (S)
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The hydrothermal alteration of cooling lava domes [PDF]
Bulletin of Volcanology, 2015 Hydrothermal alteration is a recognized cause of volcanic instability and edifice collapse, including that of lava domes or dome complexes. Alteration by percolating fluids transforms primary minerals in dome lavas to weaker secondary products such as clay minerals; moreover, secondary mineral precipitation can affect the porosity and permeability of ...
Ball, Jessica L. +3 more
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Influence of conduit and topography complexity on spine extrusion at Shiveluch volcano, Kamchatka
Communications Earth & Environment, 2022 Geomorphology affects the lava extrusions and hazard directivity of dome-structure volcanoes, according to analog and numerical experiments and remote sensing photogrammetric observations of the spine-extrusion event at Shiveluch volcano, Kamchatka, 2020.
Thomas R. Walter +6 more
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Emplacement of the Rocche Rosse rhyolite lava flow (Lipari, Aeolian Islands) [PDF]
, 2018 The authors acknowledge Airbus Defence and Space for providing satellite imagery, financial support from Keele University and fieldwork grants from the Mineralogical Society of Great Britain and Ireland and the Volcanic and Magmatic Studies Group.
Bullock, Liam A +2 more
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Proceedings, 2023 Since its last eruption in 1990–1995, the Unzen volcano (Shimabara Peninsula, Japan) has been quiescent. At its summit, a complex dacitic dome spreads toward the East, in the direction of the Mizunashigawa valley.
Rikuto Daikai +4 more
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