Results 51 to 60 of about 11,130 (249)

Complex styles of phreatomagmatic explosions at Kīlauea Volcano, Hawaii, controlled by magma structure

open access: yesFrontiers in Earth Science, 2023
Explosive eruptions at basaltic volcanoes remain poorly understood. Kīlauea Volcano is a type locality for basaltic eruptions and is well-known for effusive activity.
J. Schmith, D. A. Swanson
doaj   +1 more source

Learning Wave Scattering Properties From Seismograms

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Heterogeneities in the Earth's crust scatter seismic waves at many scales, trapping seismic energy and producing coda waves that encode valuable information on geological structures. In regions such as volcanoes and fault systems, analyzing coda waves is essential for characterizing non‐uniform subsurface heterogeneity, improving ...
Reza Esfahani   +3 more
wiley   +1 more source

Temporal associations between ambrosia beetles and ʻōhiʻa (Metrosideros polymorpha) artificially inoculated with Ceratocystis lukuohia

open access: yesAgricultural and Forest Entomology, Volume 28, Issue 1, Page 49-60, February 2026.
Abstract Wood boring ambrosia beetles play a central role in the spread of Ceratocystis wilt of ‘ōhi‘a, a fungal disease caused by Ceratocystis lukuohia that kills the bioculturally important ‘ōhiʻa (Metrosideros polymorpha) tree. Beetles contribute to the spread of the disease by extruding fungus‐infected wood particles (frass). Disease mitigation can
Robert W. Peck   +4 more
wiley   +1 more source

No Measurable Calcium Isotopic Fractionation During Crystallization of Kilauea Iki Lava Lake

open access: yesGeochemistry, Geophysics, Geosystems, 2018
In order to investigate possible Ca isotopic fractionation during basaltic magma differentiation, we measured Ca isotopic compositions of lavas recovered from Kilauea Iki lava lake at Hawaii.
Hongming Zhang   +7 more
doaj   +1 more source

Recent activity at Nyiragongo and lava-like occurrences [PDF]

open access: yesBulletin of the Geological Society of Finland, 1985
The behaviour of Nyiragongo, before and after its outbreak on January 10th, 1977, as compared with the behaviour of the other two volcanoes containing subpermanent lava-lakes nowadays, Erta'Ale and Mount Erebus, suggests that the considerable convection ...
H. Tazieff
doaj   +1 more source

Lava fountain jet noise during the 2018 eruption of fissure 8 of Kīlauea volcano

open access: yesFrontiers in Earth Science, 2022
Real-time monitoring is crucial to assess hazards and mitigate risks of sustained volcanic eruptions that last hours to months or more. Sustained eruptions have been shown to produce a low frequency (infrasonic) form of jet noise.
Julia E. Gestrich   +8 more
doaj   +1 more source

Abnormally Large Magma Flux Does Not Lead to Eruption in Subduction Zone Calderas: The 2022–2023 Episode of Uplift of Aniakchak Crater (Aleutians)

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Observations of ground deformation provide insights on the triggering mechanisms of eruptions. At Aniakchak Crater (Aleutians) InSAR measured ∼ ${\sim} $72 cm of uplift in less than 7 months between 2022 and 2023. The uplift can be explained by the inflation of a point pressure source at a depth of 3.2 km.
Francisco Delgado
wiley   +1 more source

Microstructural constraints on magmatic mushes under Kīlauea Volcano, Hawaiʻi

open access: yesNature Communications, 2020
Olivine crystals with prominent intracrystalline distortions have previously been used to quantify deformational processes within the mantle. Here, the authors show that similar techniques can be applied to deformed volcanic olivine crystals, providing ...
Penny E. Wieser   +3 more
doaj   +1 more source

Composition and spectroscopy of olivine xenocrysts from the Hawaiian tholeiitic basalts

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2020
Tholeiitic basalts of the Hawaiian Mauna Loa and Kīlauea volcanoes (USA) contain olivine xenocrysts with chromespinelide inclusions. Their chemical composition and spectroscopic properties were investigated and compared with olivine of another ...
A.B. Makeyev   +4 more
doaj   +1 more source

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