Results 51 to 60 of about 624,031 (203)

Volcanic Hazard Assessment for an Eruption Hiatus, or Post-eruption Unrest Context: Modeling Continued Dome Collapse Hazards for Soufrière Hills Volcano

Frontiers in Earth Science, 2020
Effective volcanic hazard management in regions where populations live in close proximity to persistent volcanic activity involves understanding the dynamic nature of hazards, and associated risk.
Elaine T. Spiller, Robert L. Wolpert, Sarah E. Ogburn, Eliza S. Calder, James O. Berger, Abani K. Patra, E. Bruce Pitman   +6 more
doaj   +1 more source

A stress-controlled mechanism for the intensity of very large magnitude explosive eruptions [PDF]

, 2011
Large magnitude explosive eruptions are the result of the rapid and large-scale transport of silicic magma stored in the Earth's crust, but the mechanics of erupting teratonnes of silicic magma remain poorly understood.
Costa, Antonio, Gottsmann, Joachim, Melnik, Oleg, Sparks, R. S. J.   +3 more
core   +1 more source

ASHEE: a compressible, equilibrium-Eulerian model for volcanic ash plumes [PDF]

, 2015
A new fluid-dynamic model is developed to numerically simulate the non-equilibrium dynamics of polydisperse gas-particle mixtures forming volcanic plumes. Starting from the three-dimensional N-phase Eulerian transport equations for a mixture of gases and
Berselli, Luigi Carlo, Cerminara, Matteo, Ongaro, Tomaso Esposti   +2 more
core   +4 more sources

Geomorphological Classification of Monogenetic Volcanoes and Its Implication to Tectonic Stress Orientation in the Middle Atlas Volcanic Field (Morocco)

Land, 2022
The Middle Atlas Volcanic Field (MAVF) covers an area of 1500 km2, with a total erupted volume of solid products (e.g., Dense Rock Equivalent or DRE) estimated to be more than 80 km3.
Mohammed Benamrane, Károly Németh, Mohamed Jadid, El Hassan Talbi   +3 more
doaj   +1 more source

Impact of volcanism on the sedimentary record of the Neuquén rift basin, Argentina: towards a cause and effect model [PDF]

, 2018
The analysis of volcano-sedimentary infill in sedimentary basins constitutes a challenge for basin analysis and hydrocarbon exploration worldwide. In order to understand the contribution of volcanism to the sedimentary record in rift basins, we study the
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core   +1 more source

First in-situ observation of a moving natural pyroclastic density current using Doppler radar

Scientific Reports, 2019
Pyroclastic density currents are one of the most devastating volcanic hazards. Understanding their dynamics is a key to develop successful hazard mitigation strategies.
L. Scharff, M. Hort, N. Varley
semanticscholar   +1 more source

Rapid caldera subsidence and fluctuating eruption dynamics: the lithostratigraphy and structure of the Loch Bà Caldera, Isle of Mull, NW Scotland

Volcanica
Caldera-forming eruptions represent extremely hazardous events. The Loch Bà Caldera on the Isle of Mull, NW Scotland, preserves an ~120 m thick sequence of Palaeogene silicic pyroclastic rocks and collapse breccias.
Peter Nicholls, David Brown, Ross Dymock
doaj   +1 more source

Distal occurrence of mid-Holocene Whakatane Tephra on the Chatham Islands, New Zealand, and potential for cryptotephra studies [PDF]

, 2011
The Whakatane Tephra, a rhyolitic tephra erupted ca. 5500 cal. BP from Okataina Volcanic Centre, central North Island, has been identified on the Chatham Islands which lie ˜900 km east of Christchurch, New Zealand.
Hogg, Alan G., Holt, Katherine A., Lowe, David J., Wallace, R. Clel   +3 more
core   +2 more sources

Holocene volcanism at the Quetrupillán Volcanic Complex (39°30’ S, 71°43’ W), southern Chile

Volcanica, 2020
This paper provides the first detailed description of Holocene volcanism at the Quetrupillán Volcanic Complex. This volcanic complex consists of a truncated and eroded stratocone plus sixteen well-preserved satellite vents on its lower flanks.
Isla Simmons, Dave McGarvie, Joaquín Cortés, Eliza Calder, Andrés Pavez   +4 more
doaj   +1 more source

A rhinocerotid skull cooked-to-death in a 9.2 Ma-old ignimbrite flow of Turkey. [PDF]

PLoS ONE, 2012
BACKGROUND: Preservation of fossil vertebrates in volcanic rocks is extremely rare. An articulated skull (cranium and mandible) of a rhinoceros was found in a 9.2±0.1 Ma-old ignimbrite of Cappadocia, Central Turkey.
Pierre-Olivier Antoine, Maeva J Orliac, Gokhan Atici, Inan Ulusoy, Erdal Sen, H Evren Çubukçu, Ebru Albayrak, Neşe Oyal, Erkan Aydar, Sevket Sen   +9 more
doaj   +1 more source