Results 31 to 40 of about 29,761 (295)

The Chaitén rhyolite lava dome: Eruption sequence, lava dome volumes, rapid effusion rates and source of the rhyolite magma

Andean Geology, 2013
We use geologic field mapping and sampling, photogrammetric analysis of oblique aerial photographs, and digital elevation models to document the 2008-2009 eruptive sequence at Chaitén Volcano and to estimate volumes and effusion rates for the lava dome ...
John Stith Pallister, Angela K. Diefenbach, William C. Burton, Jorge Muñoz, Julia P. Griswold, Luis E. Lara, Jacob B. Lowenstern, Carolina E. Valenzuela   +7 more
doaj   +1 more source

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel, Hogg, Alan G., Lowe, David J., Palmer, Jonathan G., Ramsey, Christopher Bronk   +4 more
core   +2 more sources

Klyuchevskoy volcano activity between November 2019 and June 2020

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
Klyuchevskoy volcano activity between November 2019 and June ...
Черкашин Р.И., Иванов В.В., Озеров А.Ю., Мельников Д.В., Демянчук Ю.В.   +4 more
doaj   +1 more source

Forecasting SO2 emission of Kilauea volcano using intelligent method of data analysis

Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2019
Kilauea is one of the most active and well-known volcanoes in the world and most of our knowledge of volcanism originates from its research. During a long study of volcanoes, many different methods of forecasting their activity were proposed, from the ...
Stanislav Zabielin
doaj   +1 more source

Distinguishing shallow from mid-crustal magmatic processes at Soufrière Hills Volcano using Finite Element Modelling and co-analysis of EDM and GPS data

Volcanica, 2023
We modelled ground deformation at Soufrière Hills Volcano (SHV), using data collected by the Montserrat Volcano Observatory from 2010–2019. We investigate the combined use of Electronic Distance Measuring (EDM) and Global Positioning System (GPS) to ...
Alexander Johnson, James Hickey, Karen Pascal, Ben Williamson, Raquel Syers   +4 more
doaj   +1 more source

Probabilistic enhancement of the Failure Forecast Method using a stochastic differential equation and application to volcanic eruption forecasts

, 2018
We introduce a doubly stochastic method for performing material failure theory based forecasts of volcanic eruptions. The method enhances the well known Failure Forecast Method equation, introducing a new formulation similar to the Hull-White model in ...
Bevilacqua, Andrea, Bursik, Marcus, Neri, Augusto, Patra, Abani, Pitman, E. Bruce, Voight, Barry   +5 more
core   +1 more source

Hiroshi Machida −respected tephrochronologist, teacher, leader [PDF]

, 2011
Professor Emeritus Hiroshi Machida (Hiroshi hereafter) is the leading tephrochronologist of his generation in Japan. Perhaps more than any other geoscientist from Japan, Hiroshi carried the insights and advances of tephra studies and their application in
Lowe, David J., Moriwaki, Hiroshi, Suzuki, Takehiko   +2 more
core   +2 more sources

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

Uniciencia, 2021
Volcanic cinder, also known as scoria, is an extrusive igneous rock that forms when gas-rich magmas of basaltic or andesitic composition cool quickly.
Alexis Debut, Theofilos Toulkeridis, Andrea V. Vaca, Carlos R. Arroyo   +3 more
doaj   +1 more source

Coesite Discovery in Eclogites Confirms UHP Metamorphism in the Orlica‐Śnieżnik Dome (SW Poland)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Eclogite lenses are exposed within the orthogneiss‐dominated core of the Orlica‐Śnieżnik Dome in the Sudetes, which forms the northeastern margin of the Bohemian Massif (Variscan Belt of Central Europe). The presence of coesite inclusions in garnet and omphacite confirms that these eclogites underwent ultrahigh‐pressure metamorphism.
Małgorzata Nowak, Lucie Tajčmanová, Marcin Dąbrowski, Iris Buisman, Jacek Szczepański   +4 more
wiley   +1 more source

Dynamics and Deposits of Pyroclastic Density Currents in Magmatic and Phreatomagmatic Eruptions Revealed by a Two‐Layer Depth‐Averaged Model

Geophysical Research Letters, 2023
A pyroclastic density current (PDC) is characterized by its strong stratification of particle concentration; it consists of upper dilute and lower dense currents, which generally control the dynamics and deposits of PDCs, respectively.
Hiroyuki A. Shimizu, Takehiro Koyaguchi, Yujiro J. Suzuki   +2 more
doaj   +1 more source