Results 31 to 40 of about 865,890 (160)

Tracking Pyroclastic Flows at Soufrière Hills Volcano [PDF]

Eos, Transactions American Geophysical Union, 2009
Explosive volcanic eruptions typically show a huge column of ash and debris ejected into the stratosphere, crackling with lightning. Yet equally hazardous are the fast moving avalanches of hot gas and rock that can rush down the volcano's flanks at speeds approaching 280 kilometers per hour. Called pyroclastic flows, these surges can reach temperatures
RIPEPE, MAURIZIO, De Angelis S., LACANNA, GIORGIO, Poggi G., Williams C., MARCHETTI, EMANUELE, Delle Donne D., Ulivieri G.   +7 more
openaire   +4 more sources

The Relative Effectiveness of Empirical and Physical Models for Simulating the Dense Undercurrent of Pyroclastic Flows under Different Emplacement Conditions

Frontiers in Earth Science, 2017
High concentration pyroclastic density currents (PDCs) are hot avalanches of volcanic rock and gas and are among the most destructive volcanic hazards due to their speed and mobility.
Sarah E. Ogburn, Eliza S. Calder
doaj   +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

A new infrared volcano monitoring using GCOM-C (SHIKISAI) satellite: applications to the Asia-Pacific region

Earth, Planets and Space, 2020
The GCOM-C (SHIKISAI) satellite was developed to understand the mechanisms of global climate change. The second-generation global imager (SGLI) onboard GCOM-C is an optical sensor observing wavelengths from 380 nm to 12.0 μm in 19 bands.
Takayuki Kaneko, Atsushi Yasuda, Kenji Takasaki, Shun Nakano, Toshitsugu Fujii, Yoshiaki Honda, Kouji Kajiwara, Hiroshi Murakami   +7 more
doaj   +1 more source

A pyroclastic flow deposit on Venus [PDF]

Geological Society, London, Special Publications, 2013
Abstract Explosive volcanism on Venus is severely inhibited by its high atmospheric pressure and lack of water. This paper shows that a deposit located near 16°S, 145°E, here referred to as Scathach Fluctus, displays a number of morphological characteristics consistent with a pyroclastic flow deposit.
Ghail, RC, Wilson, L
openaire   +2 more sources

Vibration-induced dynamical weakening of pyroclastic flows: Insights from rotating drum experiments [PDF]

, 2015
Pyroclastic flows are characterized by their high mobility, which is often attributed to gas fluidization of the usually fine and/or low-density particles.
Soria del Hoyo, Carlos, Valverde Millán, José Manuel, Carlos Soria‐Hoyo, Jose Manuel Valverde   +3 more
core   +1 more source

Numerical Simulation of Pyroclastic Flow of Karangetang Volcano Based on 2015 Eruption Activity

JGEET: Journal of Geoscience, Engineering, Environment and Technology
On May 7-9, 2015 the eruptive activity of Mount Karangetang released pyroclastic flows towards the Batuawang River for 3.6 km and hit Kora kora village which is located south of the Main Crater. This pyroclastic flow originated from lava flows during the
Willi FS Banggur, Cahya Patria, Estu Kriswati, Mirzam Abdurrachman, Gede Suantika, Devy Kamil Syahbana, Richard Korompis, David Adriansyah, Aditya Gurasali, Alfred Wenas, Kurnia Praja, Imam Sentosa, Iing Kusnadi, Makoto Shimomura   +13 more
doaj   +1 more source

Observations and modelling of soil slip-debris flow initiation processes in pyroclastic deposits: the Sarno 1998 event [PDF]

Natural Hazards and Earth System Sciences, 2003
Pyroclastic soils mantling a wide area of the Campanian Apennines are subjected to recurrent instability phenomena. This study analyses the 5 and 6 May 1998 event which affected the Pizzo d’Alvano (Campania, southern Italy).
G. B. Crosta, P. Dal Negro
doaj  

Geomorphological Classification of Monogenetic Volcanoes and Its Implication to Tectonic Stress Orientation in the Middle Atlas Volcanic Field (Morocco)

Land, 2022
The Middle Atlas Volcanic Field (MAVF) covers an area of 1500 km2, with a total erupted volume of solid products (e.g., Dense Rock Equivalent or DRE) estimated to be more than 80 km3.
Mohammed Benamrane, Károly Németh, Mohamed Jadid, El Hassan Talbi   +3 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