Results 71 to 80 of about 5,469 (201)

Ash aggregation during the 11 February 2010 partial dome collapse of the Soufrière Hills Volcano, Montserrat [PDF]

, 2017
On 11 February 2010, Soufrière Hills Volcano, Montserrat, underwent a partial dome collapse (~ 50 × 106 m3) and a short-lived Vulcanian explosion towards the end.
Bonadonna, C, Burns, FA, Cole, PD, Pioli, L, Stinton, A   +4 more
core   +3 more sources

Field trip to the Ischia resurgent caldera, a journey across an active volcano in the Gulf of Naples [PDF]

, 2018
Ischia is one of the most impressive examples of post-caldera resurgence in the world, with its almost 1,000 m of uplift in less than 30 ka. This three-days field trip will lead the participants through the geological and volcanological history of the ...
Enrica Marotta, Fabio Sansivero, Gian Marco Marmoni, Marta Della Seta, Salvatore Martino, Sandro de Vita   +5 more
core  

PYFLOW_2.0: a computer program for calculating flow properties and impact parameters of past dilute pyroclastic density currents based on field data [PDF]

, 2018
This paper presents PYFLOW_2.0, a hazard tool for the calculation of the impact parameters of dilute pyroclastic density currents (DPDCs). DPDCs represent the dilute turbulent type of gravity flows that occur during explosive volcanic eruptions; their ...
Dioguardi, Fabio, Mele, Daniela
core   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

Long-term hazard of pyroclastic density currents at Vesuvius (Southern Italy) with maps of impact parameters [PDF]

Natural Hazards and Earth System Sciences
The hazard of pyroclastic density currents (PDCs) at Vesuvius is investigated by analysing deposits from past eruptions. No specific eruption was chosen as representative of the hazard of PDCs, and the analysis is extended to all the eruptions that left ...
P. Dellino, F. Dioguardi, R. Sulpizio, R. Sulpizio, R. Sulpizio, D. Mele   +5 more
doaj   +1 more source

Probabilistic Volcanic Hazard Assessment for Pyroclastic Density Currents From Pumice Cone Eruptions at Aluto Volcano, Ethiopia

Frontiers in Earth Science, 2020
Aluto volcano, in the Main Ethiopian Rift, is a peralkaline caldera system, which comprises conglomerations of rhyolite (obsidian) lavas and enigmatic pumice cones.
Ben Clarke, Ben Clarke, Pablo Tierz, Pablo Tierz, Eliza Calder, Gezahegn Yirgu   +5 more
doaj   +1 more source

Investigation of variable aeration of monodisperse mixtures: implications for pyroclastic density currents [PDF]

, 2018
The high mobility of dense pyroclastic density currents (PDCs) is commonly attributed to high gas pore pressures. However, the influence of spatial and temporal variations in pore pressure within PDCs has yet to be investigated.
Parsons, Daniel R., Rowley, Pete J., Smith, Gregory M., Williams, Rebecca   +3 more
core   +5 more sources

CNXT‐Ti‐LT–Based Multi‐Scale Feature–Aware Susceptibility Mapping of Rainfall‐Induced Clustered Landslides in Southeast China

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.
Abstract This study focuses on the clustered landslide event triggered by intense rainfall on 16 June 2024 in the Fujian–Guangdong–Jiangxi border region, aiming to develop an efficient deep learning model for high‐accuracy landslide susceptibility mapping. Based on the mapped landslide distribution and insights from field investigations, we constructed
Senlin Luo, Wuwei Mao, Zhiqiang Yang, Guoming Zheng, Zhonghui He, Jiahuang Wang, Yu Huang   +6 more
wiley   +1 more source

Experimental constraints on volcanic ash generation and clast morphometrics in pyroclastic density currents and granular flows

Volcanica, 2020
Pyroclastic density currents (PDCs) are a prominent hazard of volcanic activity; however, fully quantitative observations are lacking and little direct evidence exists to constrain the parameters controlling ash production and runout. Here, we use rotary
Adrian Hornby, U Kueppers, Benedikt Maurer, Carina Poetsch, Donald Dingwell   +4 more
doaj   +1 more source

CHAPTER 4.4 Pyroclastic Density Currents

Pyroclastic density currents (PDCs) are hot mixtures of gases and volcanic rock of diverse size, nature, or density, capable of flowing over long distances at velocities of tens to hundreds of kilometers per hour. They typically originate from the gravitational collapse of explosive eruption columns, lava domes or lava-flow fronts, unstable upper-flank
Sylvain Charbonnier, Eric Breard, Samantha Engwell, Olivier Roche, Walter Baez, Marina Belousova, Briitany Brand, Geoffrey Lerner, Sarah Ogburn   +8 more
openaire   +1 more source