Results 31 to 40 of about 70,364 (285)
On the dynamics of eruptive prominences [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractTo contribute to the understanding of the physical mechanisms at work during the initial phase and early evolution of erupting prominences, we analyze combined observations from ground-based and space-borne instruments. We present two case studies, which occurred at two different phases of the solar cycle, namely on March 2, 2002 and on April ...
Laura A. Balmaceda +5 more
openaire +1 more source
Geophysical Research Letters, 2023 Volcanic seismicity provides essential insights into the behavior of an active volcano across multiple time scales. However, to understand how magma moves as the eruption cycle develops, better knowledge of the geometry and physical properties of the ...
Xiaotao Yang +3 more
doaj +1 more source
Earth, Planets and Space, 2023 We review pre-eruptive dynamics and evidence of open-system behavior in the volcanic plumbing system beneath Campi Flegrei Caldera, together with estimates of magma residence time, magma ascent, and mixing-to-eruption timescales.
Maurizio Petrelli +3 more
doaj +1 more source
Dynamics of shallow hydrothermal eruptions: new insights from Vulcano’s Breccia di Commenda eruption
Bulletin of Volcanology, 2018 Understanding the dynamics and effects of hydrothermal eruptions is crucial to the hazard assessment in both volcanic and geothermal areas. Eruptions from hydrothermal centres may occur associated with magmatic phases, but also as isolated events without magmatic input, with the most recent examples being those of Te Maari (Tongariro, New Zealand) in ...
Rosi, Mauro +5 more
openaire +3 more sources
Supercomputer modeling of volcanic eruption dynamics [PDF]
, 1995 Our specific goals are to: (1) provide a set of models based on well-defined assumptions about initial and boundary conditions to constrain interpretations of observations of active volcanic eruptions--including movies of flow front velocities, satellite observations of temperature in plumes vs. time, and still photographs of the dimensions of erupting
Kieffer, S. W. +2 more
openaire +2 more sources
An analytical model for gas overpressure in slug-driven explosions:insights into Strombolian volcanic eruptions [PDF]
, 2012 Strombolian eruptions, common at basaltic volcanoes, are mildly explosive events that are driven by a large bubble of magmatic gas (a slug) rising up the conduit and bursting at the surface.
Del Bello, Elisabetta +4 more
core +1 more source
Inclusion of ash and SO2 emissions from volcanic eruptions in WRF-Chem: development and some applications [PDF]
Geoscientific Model Development, 2013 We describe a new functionality within the Weather Research and Forecasting (WRF) model with coupled Chemistry (WRF-Chem) that allows simulating emission, transport, dispersion, transformation and sedimentation of pollutants released during volcanic ...
M. Stuefer +6 more
doaj +1 more source
Liquid jet eruption from hollow relaxation [PDF]
, 2013 A cavity hollowed out on a free liquid surface is relaxing, forming an intense liquid jet. Using a model experiment where a short air pulse sculpts an initial large crater, we depict the different stages in the gravitational cavity collapse and in the ...
Antkowiak, Arnaud +2 more
core +1 more source
Fluid dynamic induced break-up during volcanic eruptions [PDF]
Nature Communications, 2019 AbstractDetermining whether magma fragments during eruption remains a seminal challenge in volcanology. There is a robust paradigm for fragmentation of high viscosity, silicic magmas, however little is known about the fragmentation behaviour of lower viscosity systems—the most abundant form of volcanism on Earth and on other planetary bodies and ...
T. J. Jones +2 more
openaire +4 more sources
Twisting/Swirling Motions During a Prominence Eruption as seen from SDO/AIA
, 2018 A quiescent prominence was observed at north-west limb of the Sun using different channels of Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO).
Banerjee, D. +4 more
core +1 more source