Results 51 to 60 of about 3,224 (207)

Ground deformation after the 2015 phreatomagmatic eruption at Kuchino-Erabujima Volcano, Japan detected by InSAR time series analysis with ALOS-2 data

Earth, Planets and Space
The Kuchino-Erabujima Volcano has experienced multiple phreatomagmatic eruptions since 2015. Monitoring ground deformation at active volcanoes is essential for understanding magma supply systems and predicting volcanic activity.
Misa Ichimura, Kano Mikihara, Masayoshi Ishimoto, Tomokazu Kobayashi, Hiroshi Munekane   +4 more
doaj   +1 more source

Continuous monitoring of soil CO2 flux at Aso volcano, Japan: the influence of environmental parameters on diffuse degassing

Earth, Planets and Space, 2019
Continuous measurements of soil CO2 flux are useful for understanding degassing processes and for monitoring volcanic activities. Recent studies at many volcanoes have revealed that soil CO2 flux variations are significantly influenced by environmental ...
Masaaki Morita, Toshiya Mori, Akihiko Yokoo, Takahiro Ohkura, Yuichi Morita   +4 more
doaj   +1 more source

A Combined Field and Numerical Approach to Understanding Dilute Pyroclastic Density Current Dynamics and Hazard Potential: Auckland Volcanic Field, New Zealand [PDF]

, 2014
The most dangerous and deadly hazards associated with phreatomagmatic eruption in the Auckland Volcanic Field (AVF; Auckland, New Zealand) are those related to volcanic base surges - dilute, ground-hugging, particle laden currents with dynamic pressures ...
Agustin-Flores, Javier, Boomberg, Simon H., Brand, Brittany D., Clarke, Amanda, Gravley, Darren, Lindsay, Jan, Németh, Károly   +6 more
core   +2 more sources

Landslide Character and Hydrological Thresholds for Slope Failure Initiation on Volcanic Scoria Slopes: Case Study From Mt Hobson/Ōhinerau, Auckland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Rainfall‐induced landslides involving on Auckland Volcanic Field scoria cones are highly unusual, compared with widespread landsliding in the surrounding Auckland clay‐rich residual soils. Indeed, while Auckland can suffer from thousands of rainfall‐induced shallow landslides from severe storms at subdecadal timescales, these are usually limited to ...
Beatrice Bertelli, Martin Brook
wiley   +1 more source

Large‐Scale Submarine Sediment Waves at Macauley Caldera Volcano: In Situ Evidence of High‐Flux, Syn‐Eruptive Submarine Transport

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Two sediment cores were collected from a submarine sediment wave field on the flank of Macauley volcano. Combined with seismic reflection surveys and numerical modeling, we present an integrated model of the formation of large‐scale, eruption‐fed, submarine sediment waves. The sediment waves are large (>100 m high, 1.5 km wide, tens of km long)
Shannon E. Frey, Martin Jutzeler, Matthieu Cartigny, Rebecca J. Carey   +3 more
wiley   +1 more source

The Leaning Puy de Dôme (Auvergne, France) tilted by shallow intrusions

Volcanica, 2019
Monogenetic lava domes are a special type of volcanic structure, prone to mass wasting and explosive eruptions. The iconic Puy de Dôme (Chaîne des Puys, Auvergne)—which gave its name to ‘dome’ landforms—is asymmetric, with one side steeper than the other.
Michael S Petronis, Benjamin van Wyk de Vries, Daniel Garza   +2 more
doaj   +1 more source

The Masaya Triple Layer: a 2100 year old basaltic multi-episodic Plinian eruption from the Masaya Caldera Complex (Nicaragua) [PDF]

, 2008
The Masaya Caldera Complex has been the site of three highly explosive basaltic eruptions within the last six thousand years. A Plinian eruption ca. 2 ka ago formed the widespread deposits of the Masaya Triple Layer.
A. Freundt, Adams, Barckhausen, Bice, Carey, Carey, Coltelli, DeMets, Duffell, Dzurisin, Fierstein, Girard, H.-U. Schmincke, Horrocks, Houghton, Houghton, Kutterolf, Kutterolf, Kutterolf, Lewicki, Mastin, McBirney, McPhie, Métaxian, Pyle, Pérez, Rymer, S. Kutterolf, Sable, Sarna-Wojcicki, Sparks, Stoiber, van den Bogaard, W. Pérez, Walker, Walker, Wehrmann, Williams, Wilson, Woods   +39 more
core   +1 more source

Magma Paths of the Karthala and La Grille Volcanoes (Grande Comore) Revisited: New Evidence From Geomorphology and Geochemistry

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Grande Comore, the westernmost island within the Madagascar Comoros Volcanic (MCV) chain, hosts two juxtaposed basaltic volcanoes, Karthala and La Grille, with contrasting lava geochemical signatures and eruption frequencies. Their formation and dynamics have been explained either by a mantle plume or, more recently, as part of a ...
François J. P. Lötter, Nicolas Villeneuve, Andrea Di Muro, Nils Lenhardt, Laurent Michon, Pascale Besson, Hamid Soulé   +6 more
wiley   +1 more source

Lateral migration of explosive hazards during maar eruptions constrained from crater shapes

Journal of Applied Volcanology, 2021
Maar volcanoes are produced by subsurface phreatomagmatic explosions that can move vertically and laterally during an eruption. Constraining the distances that maar-forming explosions move laterally, and the number of relocations common to these ...
A. H. Graettinger, A. T. Bearden
doaj   +1 more source

The influence of regional stress and structural control on the shape of maar craters

Volcanica, 2021
Maars are volcanic craters excavated by the interaction of magma and groundwater in subsurface phreatomagmatic explosions. Maar craters display a variety of shapes and sizes, but commonly display elongation.
Cody Nichols, Alison Graettinger
doaj   +1 more source