Saturday, January 23, 2021
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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
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Volcanic eruptions have more effect in summer

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Representative Image : Lava "Volcanic Eruption"
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Magma ‘conveyor belt’ fuelled world’s longest erupting supervolcanoes

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Photo of a glendonite. Credit: Bo Schultz
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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
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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
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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
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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
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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.
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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
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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
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New evidence of long-term volcanic, seismic risks in northern Europe

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An Underwater Volcanic Eruption. Credit: NSF and NOAA
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How volcanoes explode in the deep sea

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Alaska’s Umnak Island in the Aleutians showing the huge, 10-km wide caldera (upper right) largely created by the 43 BCE Okmok II eruption at the dawn of the Roman Empire. Landsat-8 Operational Land Imager image from May 3, 2014
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Eruption of Alaska’s Okmok volcano linked to period of extreme cold...

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Volcanoes

Study proves that magma chambers are huge masses of crystals with...

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Three water-filled maars in the Eifel, Germany (Gemündener Maar, Weinfelder Maar, Schalkenmehrener Maar). Created by volcanic activity, maars are also found in other parts of Europe and on other continents, but Eifel-Maars are the classic example worldwide.
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New hints of volcanism under the heart of northern Europe

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Yellowstone National Park is an American national park located in Wyoming, Montana, and Idaho.
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Discovery of ancient super-eruptions indicates the Yellowstone hotspot may be waning

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El Niño events and high-latitude Eurasian warming are usually observed after large tropical eruptions. However, simulations of climate impacts by volcanos show large biases when compared with observations, calling for substantial improvements in climate models. The graph depicts the change in zonally averaged surface temperature in observations (the shaded part) and simulations (the line) after large tropical volcanic eruptions. The equation denotes the chemical reaction in the stratosphere. Credit: Advances in Atmospheric Sciences
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Philippine volcanic eruption could prompt El Nino warming next winter

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Credit: Pohang University of Science & Technology (POSTECH)
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Volcanic eruptions reduce global rainfall

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Picture of the Santa Maria volcano in Guatemala. Credit: Zorn et al. 2020, Nature
Volcanoes

How drones can monitor explosive volcanoes

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