Results 71 to 80 of about 308 (170)

Interactive 3D simulation of Taal Volcano eruption plumes

Applied Computing and Geosciences
The Taal Volcano in the Philippines is one of the most active volcanoes due to its recurrent, sometimes highly destructive eruptions, especially the 12 January 2020 phreatomagmatic eruption classified as VEI=4.
Neil Patrick Del Gallego, Onesimus Dela Torre, Carlos Miguel Arquillo, Vaughn Vincent Cordero, Joaquin Lorenzo Sales, Stephen Lance Yarte   +5 more
doaj   +1 more source

Hazards of volcanic lakes: analysis of Lakes Quilotoa and Cuicocha, Ecuador [PDF]

Advances in Geosciences, 2008
Volcanic lakes within calderas should be viewed as high-risk systems, and an intensive lake monitoring must be carried out to evaluate the hazard of potential limnic or phreatic-magmatic eruptions. In Ecuador, two caldera lakes – Lakes Quilotoa
G. Gunkel, C. Beulker, B. Grupe, F. Viteri   +3 more
doaj  

Spatial extent and eruptive potential of hydrothermal system at Numanotaira Crater, Adatara Volcano, Japan, inferred from shallow resistivity structure and diffuse soil gas flux measurement

Earth, Planets and Space
The Numanotaira Crater (NC) of the Adatara Volcano is located in northern Fukushima Prefecture, northeastern Japan, and has repeatedly undergone phreatic eruptions and volcanic lahars.
Hiromasa Kawada, Wataru Kanda, Masahiro Ichiki, Hiroki Nagaike, Tatsuki Ishigo   +4 more
doaj   +1 more source

On the relations between morphotectonics, seismicity, perennial and sporadic hydrothermalism on the volcanic island complex of Milos (Greece)

BSGF - Earth Sciences Bulletin
The volcanic island complex of Milos, situated ∼200 km north of the Hellenic subduction zone, records the interplay of volcanic, tectonic, and gravitational processes within multidirectional, polyphased rift systems that developed throughout the Mio–Plio–
Cavailhes Thibault, Martelat Jean-Emmanuel, Escartin Javier, Anguy Yannick, Augier Sylvain, Grandjean Philippe, Nomikou Paraskevi, Bejelou Konstantina   +7 more
doaj   +1 more source

Ground deformations associated with an overpressurized hydrothermal systems at Azuma volcano (Japan) revealed by InSAR data

Earth, Planets and Space
Inflations at active volcanoes are indicators of overpressure in the subsurface, which is known to be a phenomenon that precedes eruptions. Volcanic overpressure is induced by the injection of magmatic fluids, accumulated magma, or heat supply from ...
Yuji Himematsu, Taku Ozawa
doaj   +1 more source

Modeling the priming mechanism of phreatic eruptions

Phreatic eruptions are non-magmatic explosions consisting in the sudden expansions of groundwater due to the input of hot magmatic ¿¿uids and heat. Although such eruptions are intrinsically less hazardous than magmatic eruptions (i.e. the energy released in the process is relatively low) the lack of clear and early precursory signals increases the ...
Stocchi, M., Houzeaux, Guillaume, Costa, Antonio, Folch, Arnau, Massaro, Silvia, Sulpizio, Roberto   +5 more
openaire   +1 more source

A numerical model for precursory time sequences of the phreatic eruptions of Mt. Ontake, central Japan

Earth, Planets and Space
The 2014 phreatic eruption of Mt. Ontake was preceded by increased volcano-tectonic (VT) seismicity, but all other types of precursors were obscure. A subsurface process leading to eruption with few precursors has yet to be identified.
Yuta Maeda
doaj   +1 more source

Geological study of phreatic eruptions

The Journal of the Geological Society of Japan, 2018
Teruki Oikawa, Tsukasa Oba, Akihiko Fujinawa, Hisashi Sasaki   +3 more
openaire   +2 more sources

Time Varying Crustal Anisotropy at Whakaari/White Island Volcano

Geophysical Research Letters
Whakaari/White Island has been the most active New Zealand volcano in the 21st century, producing small phreatic and phreatomagmatic eruptions, which are hard to predict.
D. Y. Mengesha, M. K. Savage, A. D. Jolly, C. J. Ebinger   +3 more
doaj   +1 more source

Recurrent patterns in fluid geochemistry data prior to phreatic eruptions

, 2016
Not all volcanic eruptions are magma-driven: the sudden evaporation and expansion of heated groundwater may cause phreatic eruptions, where the magma involvement is absent or negligible. Active crater lakes top some of the volcanoes prone to phreatic activity.
Rouwet, Dmitri, Sandri, Laura, Todesco, Micol, Pecoraino, Giovannella, Diliberto, Iole Serena, Tonini, Roberto   +5 more
openaire   +1 more source