Results 11 to 20 of about 2,674 (211)

The August 2010 Phreatic Eruption of Mount Sinabung, North Sumatra [PDF]

Indonesian Journal on Geoscience, 2013
DOI: 10.17014/ijog.v8i1.155Mount Sinabung, located in Karo Regency, North Sumatra Province, is a strato volcano having four active craters. Since its latest eruption about 1,200 year ago, a phreatic eruption occurred on August 27th, 2010.
Prambada, O. (O), Siregar, D. A. (D), Sutawidjaja, I. S. (Igan)   +2 more
core   +4 more sources

Upper holocene tephro-chronostratigraphy of Irazú Volcano, Costa Rica [PDF]

Scientific Reports
Irazú is one of the largest and most active volcanoes in Costa Rica. We present the tephro-chronostratigraphy of the last 2.6 ka of the Irazú volcano based on detailed field work and C14 radiometric dating, as well as a revision of the geological and ...
Daniela Campos-Durán, Guillermo E. Alvarado, Joan Martí   +2 more
doaj   +2 more sources

Short-period volcanic gas precursors to phreatic eruptions: Insights from Poás Volcano, Costa Rica

Earth and Planetary Science Letters, 2016
AbstractVolcanic eruptions involving interaction with water are amongst the most violent and unpredictable geologic phenomena on Earth. Phreatic eruptions are exceptionally difficult to forecast by traditional geophysical techniques. Here we report on short-term precursory variations in gas emissions related to phreatic blasts at Poás volcano, Costa ...
de Moor, J., AIUPPA, Alessandro, Pacheco, J., Avard, G., Kern, C., Liuzzo, M., Martínez, M., Giudice, G., Fischer, T.   +8 more
openaire   +6 more sources

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   +3 more sources

Groundwater Interacting at Depth With Hot Plastic Magma Triggers Phreatic Eruptions at Yugama Crater Lake of Kusatsu-Shirane Volcano (Japan)

Frontiers in Earth Science, 2021
Interpreting the triggering mechanisms for phreatic eruptions is a key to improving the hazard assessment of crater lakes. Yugama Crater Lake at Kusatsu-Shirane volcano, Japan, is the site of frequent phreatic eruptions with the recent eruptions in 1982 ...
Muga Yaguchi, Takeshi Ohba, Akihiko Terada   +2 more
doaj   +1 more source

Rare Earth Elements Variations in a Hyperacid Crater Lake and Their Relations With Changes in Phreatic Activity, Physico-Chemical Parameters, and Chemical Composition: The Case of Poás Volcano (Costa Rica)

Frontiers in Earth Science, 2022
Decades of geochemical monitoring at active crater lakes worldwide have confirmed that variations in major elements and physico-chemical parameters are useful to detect changes in volcanic activity.
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Lorenzo Brusca, Loic Peiffer, Gilles Levresse, Sergio Bellomo   +12 more
doaj   +1 more source

Phreatic volcanic eruption preceded by observable shallow groundwater flow at Iwo-Yama, Kirishima Volcanic Complex, Japan

Communications Earth & Environment, 2022
Electric field changes generated by the movement of shallow groundwater can be regarded as a precursor to phreatic volcanic eruptions, according to near-vent geophysical observations of Iwo-Yama volcano in the Kirishima complex, Japan.
Koki Aizawa, Dan Muramatsu, Takeshi Matsushima, Takao Koyama, Makoto Uyeshima, Shigeru Nakao   +5 more
doaj   +1 more source

Fluid-mineral dynamics at the Rincón de la Vieja volcano—hydrothermal system (Costa Rica) inferred by the study of major, minor and rare earth elements in the hyperacid crater lake

Frontiers in Earth Science, 2023
Volcanic lakes are complex natural systems and their chemical composition is related to a myriad of processes. The chemical composition of major, minor, Rare Earth Elements (REE) and physico-chemical parameters at the hyperacid crater lake of Rincón de ...
Sabrina Pappaterra, Claudio Inguaggiato, Claudio Inguaggiato, Dmitri Rouwet, Gilles Levresse, Loic Peiffer, Loic Peiffer, Carmine Apollaro, Raúl Mora-Amador, Carlos Ramírez-Umaña, Gino González, Gino González, Gino González, Benedetto Schiavo, Thomas Gunter Kretzschmar, Lorenzo Brusca   +15 more
doaj   +1 more source

A quest for unrest in multiparameter observations at Whakaari/White Island volcano, New Zealand 2007–2018

Earth, Planets and Space, 2021
The Whakaari/White Island volcano, located ~ 50 km off the east coast of the North Island in New Zealand, has experienced sequences of quiescence, unrest, magmatic and phreatic eruptions over the last decades.
Corentin Caudron, Társilo Girona, Arthur Jolly, Bruce Christenson, Martha Kane Savage, Roberto Carniel, Thomas Lecocq, Ben Kennedy, Ivan Lokmer, Alexander Yates, Ian Hamling, Iseul Park, Geoff Kilgour, Agnès Mazot   +13 more
doaj   +1 more source

Phreatic and Hydrothermal Eruptions: From Overlooked to Looking Over

Bulletin of Volcanology, 2022
AbstractOver the last decade, field investigations, laboratory experiments, geophysical exploration and petrological, geochemical and numerical modelling have provided insight into the mechanisms of phreatic and hydrothermal eruptions. These eruptions are driven by sudden flashing of ground- or hydrothermal water to steam and are strongly influenced by
Cristian Montanaro, Emily Mick, Jessica Salas-Navarro, Corentin Caudron, Shane J. Cronin, J. Maarten de Moor, Bettina Scheu, John Stix, Karen Strehlow   +8 more
openaire   +1 more source