Results 61 to 70 of about 21,586 (203)

Pyroclastic deposits and volcanic history of Mayor Island [PDF]

open access: yes, 1981
The emergent summit of Mayor Island, Bay of Plenty, New Zealand, is a peralkaline rhyolite volcano constructed by: a sequence of lava flows, the Tutaretare Rhyolite Formation new; and pyroclastic deposits, the Oira Pyroclastite Formition (new).
Briggs, Roger M.   +2 more
core   +2 more sources

Evidence for Recent Large Magnitude Explosive Eruptions at Damavand Volcano, Iran with Implications for Volcanic Hazards [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2009
Damavand is a large dormant stratovolcano in the Alborz Mountains of northern Iran located in one of the most populous provinces, which could be adversely affected by tephra fall from Damavand.
M. Mortazavi
doaj  

Fluidization in pyroclastic flows

open access: yesPowder Technology
Pyroclastic flows are mixtures of gas and particles generated by gravitational collapse of lava domes or fall-back of eruption columns during explosive eruptions. They are major natural hazards because they can propagate far away from the source at speeds that largely exceed those of most natural or anthropogenic granular flows.
Salatino, Piero   +3 more
openaire   +2 more sources

INVASION OF Acacia decurrens WILLD. AFTER ERUPTION OF MOUNT MERAPI, INDONESIA

open access: yesBiotropia: The Southeast Asian Journal of Tropical Biology, 2017
Eruption of Mount Merapi in 2010 caused a dense cover of Acacia decurrens Willd., which is an Invasive Alien Plant Species (IAPS). The dense cover happened in all areas of Mount Merapi National Park (MMNP) in Java, Indonesia.
Sunardi Sunardi   +2 more
doaj   +1 more source

An ashy septingentenarian: the Kaharoa tephra turns 700 (with notes on its volcanological, archaeological, and historical importance) [PDF]

open access: yes, 2014
Most of us are aware of the basaltic Tarawera eruption on 10th June 1886: the high toll on life (~120 people), landscape devastation, and loss of the Pink and White Terraces.
Lowe, David J., Pittari, Adrian
core   +1 more source

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

open access: yesNatural 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  

Multi-geohazards of Ende city area

open access: yesIndonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol2no4.20073The Ende City is a steep mountainous area, of which the height of their peaks are above 1500 m asl. It has the limited extent of plain places, without coastal plains.
Igan Supriatman Sutawidjaja   +1 more
doaj   +1 more source

Landslides in sensitive soils, Tauranga, New Zealand. [PDF]

open access: yes, 2013
In the Tauranga region sensitive soil failures commonly occur after heavy rainfall events, causing considerable infrastructure damage. Several notable landslides include a large failure at Bramley Drive, Omokoroa in 1979, the Ruahihi Canal collapse in ...
Cunningham, Michael J.   +5 more
core   +1 more source

Sedimentation and mobility of PDCs: a reappraisal of ignimbrites’ aspect ratio

open access: yesScientific Reports, 2017
The aspect ratio of ignimbrites is a commonly used parameter that has been related to the energy of the parent pyroclastic density currents (PDCs). However this parameter, calculated as the ratio between the average thickness and the average lateral ...
Guido Giordano, Domenico M. Doronzo
doaj   +1 more source

Counterfactual Analysis of Runaway Volcanic Explosions

open access: yesFrontiers in Earth Science, 2019
“Few, beside the student of such phenomena, will be able to realize what would have resulted from a more concentrated liberation of the accumulating energy if, for instance, instead of being separated into moderate earth movements and gas emissions ...
Willy Aspinall   +2 more
doaj   +1 more source

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