Results 71 to 80 of about 2,674 (211)

Stratigraphy and lithosedimentological properties of subplinian eruptions from Mt. Taranaki, New Zealand, encompassed by the Ngaere and Pungarehu edifice collapses

New Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 722-746, December 2025.
ABSTRACT The sudden removal of large portions of a volcanic edifice through collapse can cause depressurisation in the subvolcanic magmatic system, influencing the nature of subsequent eruptions. At Mt. Taranaki, edifice failure has occurred frequently and at different timescales throughout the volcanic history, forming a broad pattern of cyclic ...
Shannen Mills, Jonathan Procter, Anke Zernack, Stuart Mead   +3 more
wiley   +1 more source

Tectonics, geology and origins of Te Riu‐a‐Māui / Zealandia

New Zealand Journal of Geology and Geophysics, Volume 68, Issue 4, Page 531-567, December 2025.
ABSTRACT Te Riu‐a‐Māui / Zealandia is a 95% submerged, five million square km southern hemisphere continent that includes the islands of New Zealand and New Caledonia. For the last 45 million years (Ma) Zealandia has been cut by the Pacific‐Australian plate boundary which today changes character from a west‐dipping subduction zone in the north to ...
Nick Mortimer
wiley   +1 more source

An Overview of the Dynamics of the Volcanic Paroxysmal Explosive Activity, and Related Seismicity, at Andesitic and Dacitic Volcanoes (1960–2010)

Frontiers in Earth Science, 2018
Understanding volcanic paroxysmal explosive activity requires the knowledge of many associated processes. An overview of the dynamics of paroxysmal explosive eruptions (PEEs) at andesitic and dacitic volcanoes occurring between 1960 and 2010 is presented
Vyacheslav M. Zobin
doaj   +1 more source

Evolution of monogenetic rhyolite volcanoes: Vinicky, Eastern Slovakia [PDF]

, 2014
Four essential volcanic units have been recognized in the late Middle Miocene rhyolite complex at the southern side of the Zemplín horst next to the village Viničky.
Baco, P., Bacova, Z., Konecny, P., Konecny, V., Lexa, J., Németh, K.   +5 more
core  

Experimental constraints on phreatic eruption processes at Whakaari (White Island volcano)

Journal of Volcanology and Geothermal Research, 2015
AbstractVigorous hydrothermal activity interspersed by sequences of phreatic and phreatomagmatic eruptions occur at Whakaari (White Island volcano), New Zealand. Here, we investigate the influence of sample type (hydrothermally altered cemented ash tuffs and unconsolidated ash/lapilli) and fragmentation mechanism (steam flashing versus gas expansion ...
Mayer, Klaus, Scheu, Bettina, Gilg, Albert, Heap, Michael, Kennedy, Ben, Lavallée, Yan, Letham-Brake, Mark, Dingwell, Donald B.   +7 more
openaire   +4 more sources

Self‐Potential Signal Associated With Hydrothermal System Disrupted by Extreme Raining Events; The Case Study of Formica Leo, Piton de la Fournaise, La Réunion Island

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract The scoria cones called Formica Leo located at the base of the Piton de la Fournaise terminal cone have been chosen for its significant positive Self‐Potential (SP) anomalies associated with hydrothermal uprising fluids to monitor SP signal and study its dynamics in relation with huge and extreme rainfall events.
Emilie Roulleau, Anthony Finizola, Nicolas Vinet, Romain Biennais, Mazhar Meralli Ballou, Amélie Poullot, Céline D'Angelo, Clément Grace, Emma Chaudron Vrignaud, Rachel Gusset, Killian Mussard, Jehoji Kuzamba Ethu, Elisa‐Lou Reati   +12 more
wiley   +1 more source

Large‐Scale Topographic Changes at Erupting Volcanoes Measured by the TanDEM‐X Digital Change Map

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract Volcanic eruptions cause large‐scale topographic changes, through the emplacement of lava flows and lava domes, the formation of craters and calderas, and thick ash and pyroclastic deposits. Here we analyze the TanDEM‐X Digital Change Map (DCM), which compares the DEM produced during 2010–2015 with satellite acquisitions collected in 2016–2022.
Rebecca Edwards, Juliet Biggs
wiley   +1 more source

The 2018 phreatic eruption at Mt. Motoshirane of Kusatsu–Shirane volcano, Japan: eruption and intrusion of hydrothermal fluid observed by a borehole tiltmeter network

Earth, Planets and Space, 2021
We estimate the mass and energy budgets for the 2018 phreatic eruption of Mt. Motoshirane on Kusatsu–Shirane volcano, Japan, based on data obtained from a network of eight tiltmeters and weather radar echoes.
Akihiko Terada, Wataru Kanda, Yasuo Ogawa, Taishi Yamada, Mare Yamamoto, Takahiro Ohkura, Hiroshi Aoyama, Tomoki Tsutsui, Shin’ya Onizawa   +8 more
doaj   +1 more source

Leachate Analyses of volcanic ashes from the 2010 Eyjafjallaj\uf6kull eruption [PDF]

, 2011
Volcanic processes which lead to eruptions can be investigated by monitoring a variety of parameters, including the composition of ash leachates. Fine-grained tephra erupted from active vents, and transported through volcanic plumes, can adsorb, and ...
Aiuppa, A., Bagnato, E., Bertagnini, A., Bonadonna, C., Cioni, R., Pedone, M., Pistolesi, M.   +6 more
core  

Decadal Monitoring of Seismic Velocity Changes Beneath Izu‐Oshima, Central Japan, Using Ambient Seismic Noise Records

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract This study monitors the seismic velocity changes beneath the Izu‐Oshima volcano, central Japan, using ambient seismic noise records from 2003 to 2020. Applying seismic interferometry to the continuous waveform data from 24 seismic stations, we observed significant temporal variations in the seismic velocity structure.
Yohei Yukutake, Taka'aki Taira, Shin'ya Onizawa, Yuichi Morita   +3 more
wiley   +1 more source