Results 211 to 220 of about 139,835 (226)

Initial phases of explosion earthquakes accompanying Vulcanian eruptions at Lokon-Empung volcano, Indonesia

Journal of Volcanology and Geothermal Research, 2016
Abstract We examine the initial phases of explosion earthquakes accompanying Vulcanian eruptions at Lokon-Empung volcano in Indonesia to reveal the triggering process of explosive eruptions. In 2012–2013, 56 Vulcanian eruptions at Lokon-Empung were observed by our temporary observation network being comprised of four broadband seismometers and two ...
Taishi Yamada, Hiroshi Aoyama, Takeshi Nishimura, Hiroshi Yakiwara, Haruhisa Nakamichi, Jun Oikawa, Masato Iguchi, Muhamad Hendrasto, Yasa Suparman   +8 more
openaire   +1 more source

Influence of the fragmentation process on the dynamics of Vulcanian eruptions: An experimental approach

Earth and Planetary Science Letters, 2011
Abstract The dynamics of magma fragmentation is a controlling factor in the behavior of explosive volcanic eruptions. If porous magma is sufficiently decompressed, a fragmentation front develops and travels through the magma at a certain speed (fragmentation speed) while the resulting particles are being ejected.
Miguel A. Alatorre-Ibargüengoitia, Bettina Scheu, Donald B. Dingwell   +2 more
openaire   +1 more source

Correlations of volcanic ash texture with explosion earthquakes from vulcanian eruptions at Sakurajima volcano, Japan

Journal of Volcanology and Geothermal Research, 2009
Abstract We compare the texture of volcanic ash with the maximum amplitude of explosion earthquakes ( A eq ) for vulcanian eruptions from Sakurajima volcano. We analyze the volcanic ash emitted by 17 vulcanian eruptions from 1974 to 1987. Using a stereoscopic microscope, we classify the glassy particles into smooth surface particles (S-type ...
T. Miwa, A. Toramaru, M. Iguchi
openaire   +1 more source

The pivotal role of Vulcanian activity in ending the explosive phase of rhyolitic eruptions: the case of the Big Obsidian Flow eruption (Newberry Volcano, USA)

Bulletin of Volcanology, 2022
Kathy Trafton, T. Giachetti
semanticscholar   +1 more source

Source mechanisms of vulcanian eruptions at Mt. Asama, Japan, inferred from volcano seismic signals

Geological Society, London, Special Publications, 2008
Abstract During the 2004 Asama volcanic activity, five summit eruptions, accompanied by the broadband seismic signals, were observed. We re-analyse the broadband waveform data analysed by Ohminato et al. (2006) using relaxed restrictions.
openaire   +1 more source

Coeval strombolian and vulcanian type explosive eruptions at Panarea (Aeolian islands)

2008
In this paper, we document the evolution of the emergent Panarea dome in the Aeolian islands 14 (Southern Italy), placing particular emphasis on the reconstruction of the explosive events occurred 15 during the final stage of its evolution. Two main pyroclastic successions exposing fall deposits with 16 different compositions have been studied into ...
Cimarelli C., De Rita D., Dolfi D., Procesi M.   +3 more
openaire   +1 more source

Vulcanian Eruptions

2015
Amanda Bachtell Clarke, Tomaso Esposti Ongaro, Alexander Belousov   +2 more
openaire   +1 more source

High-resolution video characterisation of Vulcanian eruption plumes at Sabancaya, Peru

2021
openaire   +1 more source

Processes Prior to Outbursts of Vulcanian Eruption at Showa Crater of Sakurajima Volcano(＜Special Section＞Sakurajima Special Issue)

, 2013
A. Yokoo, M. Iguchi, Takeshi Tameguri, Keigo Yamamoto   +3 more
semanticscholar   +1 more source

Field and seismic evaluation of the block-and-ash flows emplaced from eruption columns of the 2005 Vulcanian explosions at Volcán de Colima, Mexico

Bulletin of Volcanology, 2016
V. Zobin, G. Carrasco‐Núñez, V. Vargas-Gutiérrez   +2 more
semanticscholar   +1 more source