Results 11 to 20 of about 139,835 (226)

Conduit processes during the February 11, 2010 Vulcanian eruption of Soufrière Hills, Montserrat

Journal of Volcanology and Geothermal Research, 2019
Abstract We analyzed pumice from the February 11, 2010 Vulcanian explosion that immediately followed a large dome collapse at Soufriere Hills volcano. We obtained pre-explosive values of porosity, pressure, and depth by combining textural analyses and glass water content determinations.
Alain Burgisser, Tonin Bechon, Laure Chevalier, Marielle Collombet, Laurent Arbaret, Mélanie Forien   +5 more
semanticscholar   +8 more sources

Diverse Eruptive Activity Revealed by Acoustic and Electromagnetic Observations of the 14 July 2013 Intense Vulcanian Eruption of Tungurahua Volcano, Ecuador [PDF]

Geophysical Research Letters, 2018
AbstractDuring the powerful July 2013 eruption of Tungurahua volcano, Ecuador, we recorded exceptionally high amplitude, long‐period infrasound (1,600‐Pa peak‐to‐peak amplitude, 5.5‐s period) on sensors within 2 km of the vent alongside electromagnetic signals from volcanic lightning serendipitously captured as interference.
Jacob F. Anderson, J. B. Johnson, Alexander Steele, Mario Ruiz, Brittany D. Brand   +4 more
semanticscholar   +4 more sources

A gas-slug model for basaltic Vulcanian eruptions at open-conduit volcanoes, constrained by textural characteristics and dynamics of the July 3rd, 2019, Stromboli eruption (Italy)

Volcanica
Stromboli is a unique open-conduit mafic volcano known for persistent Strombolian eruptions of highly porphyritic (HP) basalticshoshonite scoria. Stronger paroxysmal explosions occur once or twice per decade, ejecting low porphyritic (LP) golden pumice ...
Guido Giordano, Alessandro Vona, Teresa Oreade Grillo, Alessandro Frontoni, Laura Calabrò, Gerardo Carrasco-Núñez, Alessandro Aiuppa, Luca Caricchi, Gianfilippo De Astis, Danilo Di Genova, Giuseppe La Spina, Monica Piochi, Marco Viccaro, Riccardo Russo   +13 more
doaj   +4 more sources

Composition of volcanic gases emitted during repeating Vulcanian eruption stage of Shinmoedake, Kirishima volcano, Japan [PDF]

Earth, Planets and Space, 2013
Volcanic gas compositions of Shinmoedake, Kirishima volcano, Japan were measured by Multi-GAS during the persistent degassing period with repeating Vulcanian eruptions from March 2011 to March 2012. In order to avoid risks due to eruptions, the measurements were performed with the Unmanned Aerial Vehicles (UAV) that fly through the plume with the Multi-
Hiroshi Shinohara
semanticscholar   +3 more sources

Source mechanism of Vulcanian eruption at Tungurahua Volcano, Ecuador, derived from seismic moment tensor inversions [PDF]

Journal of Geophysical Research: Solid Earth, 2014
Source mechanisms of explosive volcanic eruptions are critical for understanding magmatic plumbing systems and magma transport. Tungurahua is a large andesitic stratovolcano where seismoacoustic data has been recorded over several years. In May 2010, an energetic eruption cycle began with a midsize Vulcanian explosion followed by swarms of explosive ...
Keehoon Kim, Jonathan M. Lees, Mario Ruiz   +2 more
semanticscholar   +3 more sources

Popocatepetl’s Plinian Versus Vulcanian Behavior: Melt Inclusions Hold Clues to Fundamental Differences in Eruption Dynamics [PDF]

Goldschmidt Abstracts, 2020
Carlos A. Angeles-De la Torre, Julie Roberge, Celestine N. Mercer, Paul Wallace   +3 more
semanticscholar   +3 more sources

Dual Infrasound Sources from a Vulcanian Eruption of Sakurajima Volcano Inferred from Cross-Array Observation [PDF]

Seismological Research Letters, 2014
The study of volcano infrasound is becoming increasingly popular (Johnson and Ripepe, 2011; Fee and Matoza, 2013) with analysis of the recorded signals contributing to our understanding of eruption dynamics and enhancing capabilities in remote monitoring of volcanoes. Multiple studies have determined the source locations of the infrasound from volcanic
A. Yokoo, Y. J. Suzuki, M. Iguchi
core   +4 more sources

Combining Visible‐ and Infrared‐Wavelength Observations With Numerical Modeling to Describe Vulcanian Eruption Plumes at Sabancaya, Peru [PDF]

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 12, December 2024.
Sabancaya volcano (Peru), is a stratovolcano in the Central Volcanic Zone of the Andes. Since November 2016, it has been in constant activity, marked by daily multiple Vulcanian explosions. In this contribution, we first characterize the plumes generated
Riccardo Simionato, Paul A. Jarvis, Eduardo Rossi, Allan Fries, Marco Pistolesi, Rigoberto Aguilar Contreras, Costanza Bonadonna   +6 more
semanticscholar   +3 more sources

The 2019 Eruption Dynamics and Morphology at Ebeko Volcano Monitored by Unoccupied Aircraft Systems (UAS) and Field Stations

Remote Sensing, 2020
Vulcanian explosions are hazardous and are often spontaneous and direct observations are therefore challenging. Ebeko is an active volcano on Paramushir Island, northern Kuril Islands, showing characteristic Vulcanian-type activity. In 2019, we started a
Thomas R. Walter, Alexander Belousov, Marina Belousova, Tatiana Kotenko, Andreas Auer   +4 more
doaj   +2 more sources

Volcanic Eruption Forecasts From Accelerating Rates of Drumbeat Long‐Period Earthquakes [PDF]

Geophysical Research Letters, 2018
Accelerating rates of quasiperiodic “drumbeat” long‐period earthquakes (LPs) are commonly reported before eruptions at andesite and dacite volcanoes, and promise insights into the nature of fundamental preeruptive processes and improved eruption ...
Andrew F. Bell, Mark Naylor, Stephen Hernandez, Ian G. Main, H. Elizabeth Gaunt, Patricia Mothes, Mario Ruiz   +6 more
doaj   +2 more sources