Results 61 to 70 of about 5,469 (201)

Syn-eruptive, soft-sediment deformation of deposits from dilute pyroclastic density current: triggers from granular shear, dynamic pore pressure, ballistic impacts and shock waves [PDF]

Solid Earth, 2015
Soft-sediment deformation structures can provide valuable information about the conditions of parent flows, the sediment state and the surrounding environment. Here, examples of soft-sediment deformation in deposits of dilute pyroclastic density currents
G. A. Douillet, B. Taisne, È Tsang-Hin-Sun, S. K. Müller, U. Kueppers, D. B. Dingwell   +5 more
doaj   +1 more source

Forecasting volcanic ash dispersal and coeval resuspension during the April-May 2015 Calbuco eruption [PDF]

, 2016
Atmospheric dispersion of volcanic ash from explosive eruptions or from subsequent fallout deposit resuspension causes a range of impacts and disruptions on human activities and ecosystems.
Baez, Walter Ariel, Bustos, Emilce, Collini, E., Folch Duran, Arnau, Leonardo, Mingari, Osores, María Soledad, Reckziegel, Florencia Mabel, Romero, J., Villarosa, Gustavo, Viramonte, Jose German   +9 more
core   +1 more source

Evolution of Rajabasa Volcano in Kalianda Area and Its Vicinity, South Lampung Regency

Indonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v7i1.132Rajabasa Volcano (± 1281 m) and Lampung Tuff, located in the South Lampung Regency, is the main point in order to understand the evolution of Quaternary volcanism in the area.
Sutikno Bronto, P. Asmoro, G. Hartono, Sulistiyono Sulistiyono   +3 more
doaj   +1 more source

Subaqueous landslides at the distal basin of Lago Nahuel Huapi (Argentina): Towards a tsunami hazard evaluation in Northern Patagonian lakes [PDF]

, 2018
The May 22nd, 1960 Valdivia earthquake, Chile (Mw 9.5) triggered a series of subaqueous mass-wasting processes (debris flows and slides) in Lago Nahuel Huapi (Argentina), generating a tsunami-like wave that hit the coasts of San Carlos de Bariloche ...
Beigt, Debora, Gomez, Eduardo Alberto, Manzoni, Carolina, Villarosa, Gustavo   +3 more
core   +1 more source

Distribution and stratigraphy of deposits produced by diluted pyroclastic density currents of the 1982 eruption of El Chichón volcano, Chiapas, Mexico

Revista Mexicana de Ciencias Geológicas, 2018
The March 29 to April 4, 1982 eruption of El Chichón volcano in southeastern Mexico was characterized by a complex interplay between magmatic and phreatomagmatic eruptive events, that were responsible for the generation of plinian columns and ...
Teresa Scolamacchia, José Luis Macías
doaj  

Addressing Complexity in Laboratory Experiments: The Scaling of Dilute Multiphase Flows in Magmatic Systems.

, 2005
The kinematic and dynamic scaling of dilute multiphase mixtures in magmatic systems is the only guarantee for the geological verisimilitude of laboratory experiments. We present scaling relations that can provide a more complete framework to scale dilute
Burgisser, Alain, E. Breidenthal, Robert, W. Bergantz, Georges   +2 more
core   +3 more sources

Assessing the volcanic hazard for Rome. 40Ar/39Ar and In-SAR constraints on the most recent eruptive activity and present-day uplift at Colli Albani Volcanic District [PDF]

, 2016
We present new 40Ar/39Ar data which allow us to refine the recurrence time for the most recent eruptive activity occurred at Colli Albani Volcanic District (CAVD) and constrain its geographic area.
Amato, Amato, B. Giaccio, B. R. Jicha, Cimini, D'Ambrosio, D. M. Palladino, Di Rocco, F. Florindo, F. Marra, Faccenna, Faccenna, Faccenna, Florindo, Freda, Frepoli, Funiciello, G. Sottili, Gaeta, Gaeta, Gaeta, Gaeta, Giaccio, Giaccio, Giaccio, Giordano, Gozzi, J. Taddeucci, Jicha, Karner, Karner, Karner, M. Gaeta, M. Polcari, Marra, Marra, Marra, Marra, Marra, Marra, Montone, Peccerillo, Rita, Rivera, S. Stramondo, Salvi, Sottili, Stramondo, Werner   +48 more
core   +1 more source

Turbulent particle-gas feedback exacerbates the hazard impacts of pyroclastic density currents

Communications Earth & Environment
Causing one-third of all volcanic fatalities, pyroclastic density currents create destruction far beyond our current scientific explanation. Opportunities to interrogate the mechanisms behind this hazard have long been desired, but pyroclastic density ...
Daniel H. Uhle, Gert Lube, Eric C. P. Breard, Eckart Meiburg, Josef Dufek, James Ardo, Jim R. Jones, Ermanno Brosch, Lucas R. P. Corna, Susanna F. Jenkins   +9 more
doaj   +1 more source

Assessment of motion-induced fluidization of dense pyroclastic gravity currents

Annals of Geophysics, 2005
The paper addresses some fundamental aspects of the dynamics of dense granular flows down inclines relevant to pyroclastic density currents. A simple mechanistic framework is presented to analyze the dynamics of the frontal zone, with a focus ...
P. Salatino
doaj   +1 more source

Dynamics and Deposits of Pyroclastic Density Currents in Magmatic and Phreatomagmatic Eruptions Revealed by a Two‐Layer Depth‐Averaged Model

Geophysical Research Letters, 2023
A pyroclastic density current (PDC) is characterized by its strong stratification of particle concentration; it consists of upper dilute and lower dense currents, which generally control the dynamics and deposits of PDCs, respectively.
Hiroyuki A. Shimizu, Takehiro Koyaguchi, Yujiro J. Suzuki   +2 more
doaj   +1 more source