Rhyolite lava dome growth styles at Chaitén Volcano, Chile (2008-2009): Interpretation of thermal imagery [PDF]
Andean Geology, 2013 Airborne thermal images of the Chaitén rhyolite lava dome were obtained on three occasions between January 2009 and January 2010. These images were useful for understanding the nature and pace of growth of the newly extruded lava, which formed a complex ...
Marc Bernstein +4 more
doaj +5 more sources
UAS-based tracking of the Santiaguito Lava Dome, Guatemala. [PDF]
Sci Rep, 2020 AbstractImaging growing lava domes has remained a great challenge in volcanology due to their inaccessibility and the severe hazard of collapse or explosion. Changes in surface movement, temperature, or lava viscosity are considered crucial data for hazard assessments at active lava domes and thus valuable study targets. Here, we present results from a
Zorn EU, Walter TR, Johnson JB, Mania R.
europepmc +6 more sources
What factors control superficial lava dome explosivity? [PDF]
Sci Rep, 2015 AbstractDome-forming eruption is a frequent eruptive style and a major hazard on numerous volcanoes worldwide. Lava domes are built by slow extrusion of degassed, viscous magma and may be destroyed by gravitational collapse or explosion. The triggering of lava dome explosions is poorly understood: here we propose a new model of superficial lava-dome ...
Boudon G +3 more
europepmc +5 more sources
Textural Insights Into the Evolving Lava Dome Cycles at Santiaguito Lava Dome, Guatemala [PDF]
Frontiers in Earth Science, 2018 The structures and textures preserved in lava domes reflect underlying magmatic and eruptive processes, and may provide evidence of how eruptions initiate and evolve. This study explores the remarkable cycles in lava extrusion style produced between 1922
Emma Rhodes +6 more
doaj +5 more sources
Hidden mechanical weaknesses within lava domes provided by buried high-porosity hydrothermal alteration zones [PDF]
Scientific Reports, 2022 Catastrophic lava dome collapse is considered an unpredictable volcanic hazard because the physical properties, stress conditions, and internal structure of lava domes are not well understood and can change rapidly through time.
Herlan Darmawan +9 more
doaj +2 more sources
The Chaitén rhyolite lava dome: Eruption sequence, lava dome volumes, rapid effusion rates and source of the rhyolite magma [PDF]
Andean Geology, 2013 We use geologic field mapping and sampling, photogrammetric analysis of oblique aerial photographs, and digital elevation models to document the 2008-2009 eruptive sequence at Chaitén Volcano and to estimate volumes and effusion rates for the lava dome ...
John Stith Pallister +7 more
doaj +3 more sources
Blowing off steam: Tuffisite formation as a regulator for lava dome eruptions [PDF]
Frontiers in Earth Science, 2016 Tuffisites are veins of variably sintered, pyroclastic particles that form in conduits and lava domes as a result of localized fragmentation events during gas-and-ash explosions.
Jackie Evan Kendrick +5 more
doaj +6 more sources
Laboratory Simulation of Earthquake-Induced Damage in Lava Dome Rocks
Tektonika, 2023 Earthquakes can impart varying degrees of damage and permanent, inelastic strain on materials, potentially resulting in ruptures that may promote hazards such as landslides and other collapse events.
Lauren Schaefer +7 more
doaj +2 more sources
POST-ERUPTION LAVA DOME EMPLACEMENT MEASURED BY UAV PHOTOGRAMMETRY: AN INVESTIGATION ONE YEAR AFTER THE 2017–2019 MT. AGUNG ERUPTIONS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 We present an observation of morphological changes at Mt. Agung lava dome one year after the 2017–2019 eruption crisis using UAV-photogrammetry method.
R. Andaru +4 more
doaj +1 more source
Frontiers in Earth Science, 2021 Magma extrusion, lava dome growth, collapse of domes, and associated pyroclastic flow hazards are among important volcanological studies. In this paper, we analyze the influence of the magma viscosity and discharge rates on the lava dome morphology at ...
Natalya Zeinalova +6 more
doaj +1 more source