Saturday, May 8, 2021
Volcanoes

Volcanoes

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Rock samples collected near the Antarctic volcano Mount Erebus, seen here in the distance, harbor fingerprints of Earth’s ancient magnetic field. A new analysis delves into discrepancies between these fingerprints and predictions from a long-standing approximation of the field. Credit: Hanna Asefaw
Volcanoes

Antarctic Lava Yields Clues to Earth’s Past Magnetic Field

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Scientists identified flank instability at Pacaya, an active volcano in Guatemala. Credit: Kirsten Stephens/Penn State
Volcanoes

Scientists identify flank instability at a volcano with history of collapse

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Better predictions of volcanic eruptions would help protect the lives of those living close to them. Credit: Jorge Nava - Navart/Wikimedia, licensed under CC BY-SA 2.0
Volcanoes

Unravelling the when, where and how of volcanic eruptions

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A plume rises near active fissures in the crater of Hawaii's Kilauea volcano on Monday, Dec. 21, 2020. People are lining up to try to get a look at the volcano on the Big Island, which erupted last night and spewed ash and steam into the atmosphere. A spokeswoman for Hawaii Volcanoes National Park says the volcanic activity is a risk to people in the park Monday and that caution is needed. (M. Patrick/U.S. Geological Survey via AP)
Volcanoes

Lava lake forms as Hawaii volcano erupts after 2-year break

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Calcium carbonate samples from a sediment core drilled from the mid-Pacific Mountains. Credit: Northwestern University
Volcanoes

Volcanic eruptions directly triggered ocean acidification during Early Cretaceous

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Pululagua in Ecuador
Volcanoes

Scientists develop new approach to understanding massive volcanic eruptions

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A lava fountain during the 1959 eruption of Kilauea Iki. Credit: USGS
Volcanoes

Crystals may help reveal hidden Kilauea Volcano behavior

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Schematic diagram showing the geometry of a typical subduction zone and the production of arc volcanoes. Credit: Xiaotao Yang
Volcanoes

Piecing together the Alaska coastline’s fractured volcanic activity

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USF geosciences professor Bogdan Onac is pictured with ice deposit in New Mexico. Credit: University of South Florida
Volcanoes

Geoscientists discover Ancestral Puebloans survived from ice melt in New Mexico...

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The team has developed a simulation of the Mount Pinatubo eruption in 1991. The blue shading represents sulfur dioxide, the white shading represents sulfate aerosols and the orange area represents volcanic ash. Credit: KAUST
Volcanoes

Volcanic eruptions have more effect in summer

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Representative Image : Lava "Volcanic Eruption"
Volcanoes

Magma ‘conveyor belt’ fuelled world’s longest erupting supervolcanoes

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Photo of a glendonite. Credit: Bo Schultz
Volcanoes

Volcanic eruptions may explain Denmark’s giant mystery crystals

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Nanolite 'snow' surrounding an iron oxide microlite 'Christmas tree'. Even these small 50 nm spheres are actually made up of even smaller nanolites aggregated into clumps. Christmas has come early this year for these researchers. Credit: Brooker/Griffiths/Heard/Cherns
Volcanoes

Scientists shine light on tiny crystals behind unexpected violent eruptions

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A plume of ash and dust rises from Pavlof Volcano on the Alaskan Peninsula in 2013. Credit: NASA
Volcanoes

Volcanic ash may have a bigger impact on the climate than...

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Bezymianny is an active stratovolcano on the Kamchatka peninsula in eastern Russia. Credit: GFZ
Volcanoes

Rebirth of a volcano : Evolution of Bezymianny volcano, Kamchatka after...

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Basalt, the most-common rock on Earth’s surface, encases green crystals--a geologic "nesting doll" phenomenon called a xenolith. Basalts such as this one derive from a section of the mantle that has been depleted in incompatible trace elements, which is usually attributed to continental crust formation. In their work, Tucker and his collaborators propose another mechanism that would impart this signature. Credit: Carnegie Institution for Science
Volcanoes

Probing the origin of the mantle’s chemically distinct ‘scars’

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Professor Scott Bryan recovering pumice. Credit: QUT
Volcanoes

Pumice arrives delivering ‘vitamin boost’ to the reef

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Northern California’s Mount Shasta is among the largest and most active volcanoes in the Cascade Range.
Volcanoes

Study rewrites the recent history of productive Cascade Arc volcanoes

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A team of Penn State researchers studied Telica Volcano, a persistently active volcano in western Nicaragua, to both observe and quantify small-scale intra-crater change associated with background and eruptive activity. IMAGE: Google Earth
Volcanoes

Photos may improve understanding of volcanic processes

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Three water-filled maars, created by volcanic eruptions, in Germany’s Eifel region. Credit: Martin Schildgen/Wikimedia Commons
Volcanoes

New evidence of long-term volcanic, seismic risks in northern Europe

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