Results 51 to 60 of about 320 (168)
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Martian carbonate‐bearing rocks are compelling targets for exploration because they preserve detailed records of past aqueous processes, climate, and habitability. The Margin unit in Jezero crater is a distinct olivine‐ and carbonate‐bearing unit stratigraphically underlying the western fan, lining the inner margin of the western crater rim ...
Alexander J. Jones +29 more
wiley +1 more source
Earth, Planets and SpaceVulcanian eruptions, characterized by intermediate magma compositions, pose significant hazards due to their potential for both magmatic and phreatomagmatic fragmentation.
Wildan N. Hamzah +8 more
doaj +1 more source
Soil CO2 Degassing and Temperature at Poás Volcano: Evidence From the 2025 Eruptive Phase
Geofluids, Volume 2026, Issue 1, 2026.Soil carbon dioxide (CO2) degassing provides valuable insights into volcano–hydrothermal systems, especially during their active phases. Soil CO2 flux and temperature surveys are particularly useful where direct access to vents is limited, providing information on subsurface magmatic dynamics.
Noé García-Martínez +10 more
wiley +1 more source
Persistent Deep Long‐Period Seismicity Near the Lassen Volcanic Center
Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.Abstract Deep long‐period (DLP) earthquakes have been observed at many volcanic settings around the world and linked to the magmatic processes that drive volcanic unrest. At the Lassen Volcanic Center (LVC) of the Cascade arc, limited detection of DLP activity hinders classification of anomalous seismic behavior and its relationship to the LVC magmatic
Eric Kiser +6 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.Abstract Long‐term tephrostratigraphies of volcanic islands such as the Azores are often limited to young and incomplete subaerial records. Here, we present a Pleistocene‐Holocene marine tephra archive around the eastern islands of the Azores based on 22 marine gravity cores.
J. C. Schindlbeck‐Belo +8 more
wiley +1 more source
Earth, Planets and Space, 2019 At approximately 09:36 UTC on 27 April 2016, a phreatic eruption occurred on Whakaari Island (White Island) producing an eruption sequence that contained multiple eruptive pulses determined to have occurred over the first 30 min, with a continuing tremor
Braden Walsh +6 more
doaj +1 more source
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.Abstract Seismicity during non‐eruptive periods is useful for observing stress changes related to magmatic transport and volatile exsolution within active volcanoes. Mount St. Helens in Washington, USA, is the most active volcano in the continental United States and has been in quiescence since 2008. To explore the processes driving seismicity at Mount
Brenton W. Hirao +4 more
wiley +1 more source
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 +3 more
doaj
Satellite Geodesy Reveals Shallow, Transient Magma Intrusions at Sotará Volcano, Colombia
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.Abstract Sotará is a little‐known andesitic‐dacitic stratovolcano in southwestern Colombia. Although there are no recorded historical eruptions, the volcano shows clear evidence of geothermal activity, deformation, and volcano‐tectonic seismicity. Its remote location and rugged terrain pose challenges for access and routine monitoring.
Rosa Alpala +5 more
wiley +1 more source
Geochemistry, Geophysics, GeosystemsLess than a year after the 2018 Kīlauea caldera collapse and eruption, water appeared in newly deepened Halemaʻumaʻu crater. The lake—unprecedented in the written record—grew to a depth of ∼50 m before lava from the December 2020 eruption boiled it away.
P. A. Nadeau +8 more
doaj +1 more source