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 +2 more
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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
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Vulcanian eruptions at Sakurajima Volcano: geophysical data, numerical modelling, and petrological evidence [PDF]
Bulletin of VolcanologyAbstractWe investigated the magma conduit system beneath three active craters that have repeatedly generated Vulcanian eruptions at Sakurajima Volcano, Japan, by analysing seismic, infrasound, and tilt data. The hypocentres of the earthquakes associated with the Vulcanian eruptions are distributed separately at shallow depths of approximately 0.5 km ...
Takeshi Nishimura +4 more
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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.Abstract 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 by the explosions using visible‐ and infrared‐wavelength imagery, describing plume ...
Riccardo Simionato +6 more
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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 +4 more
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Tephra segregation profiles based on disdrometer observations and tephra dispersal modeling: Vulcanian eruptions of Sakurajima volcano, Japan [PDF]
Earth, Planets and SpaceThe profile of tephra concentration along a volcanic plume (i.e., the tephra segregation profile) is an important source parameter for the simulation of tephra transport and deposition and thus for the tephra sedimentation load.
Kosei Takishita +2 more
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Isomass and Probability Maps of Ash Fallout Due to Vulcanian Eruptions at Tungurahua Volcano (Ecuador) Deduced from Historical Forecasting [PDF]
Atmosphere, 2020 Since April of 2015, the ash dispersion and ash fallout due to Vulcanian eruptions at Tungurahua, one of the most active volcanoes in Ecuador, have been forecasted daily.
René Parra +3 more
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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 +3 more
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On the occurrence of volcanic lightning during vulcanian eruptions at Sakurajima volcano, Japan
Volcanic eruptions are enigmatic, not in the least because of volcanic lightning during eruptions, which is still not fully understood. In an effort to better constrain conditions under which electrical discharges occur, we use data from a multicomponent geophysical network installed in 2019 at Sakurajima volcano, Japan.
André Geisler +6 more
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