Friday, January 17, 2020
Volcanoes

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Oblique view of the risk map for lava flow inundation on the flanks of Mt. Etna for the next 50 years.
Volcanoes

Living at the edge of an active volcano: Risk from lava...

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Anak Krakatoa eruption
Volcanoes

Tsunami unleashed by Anak Krakatoa eruption was at least 100m high

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An October 7th, 2019 image of Hunga Tonga-Hunga Ha‘apai from NASA Earth Observatory. Credit: Joshua Stevens, using RADARSAT-2 data courtesy of James Garvin/NASA GSFC
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Newborn volcanic island in the Pacific has survived five years

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Aerial view of the acidic hot springs in the shallow water of the Taiwanese Kueishantao volcanic island, visible through the whitish discoloration of the sea water by sulphur. Credit: Mario Lebrato, Uni Kiel
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Life under extreme conditions at hot springs in the ocean

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The eruption of the Merapi on 11 May 2018. Credit: Université de Strasbourg/Uppsala University/Technical University of Munich/The University of Leeds/Universitas Gadjah Mada/German Research Center for Geosciences
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Researchers unlock the secret of explosive volcanism

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Brittany Erickson, an assistant professor in the Department of Computer and Information Science who studies geophysics and is a colleague of UO’s Leif Karlstrom, peers into the Halema'uma'u lava lake on Hawai’i’s Kiīlauea volcano. Credit: University of Oregon
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Volcanologist jams to the beat of the Earth’s drummer

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Volcanoes

Magma crystallization makes volcanoes more explosive

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The Ice Drilling Design and Operations (IDDO) group at the University of Wisconsin-Madison designed and built the South Pole Ice Core (SPICE) drilling system, called the Intermediate Depth Drill. Based on a Danish drill called the Hans-Taunsen drill, the Intermediate Depth Drill was purpose-built for coring 1,500 meters of ice. The ice cores collected at this depth (from the South Pole) contain atmospheric gases from the past 40,000 years, the time of transition from the last ice age to the present warm climate. Credit: T.J. Fudge
Volcanoes

Ice core source discovery adds to study of volcanic activity, climate...

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A panoramic view of one of the Arico ignimbrite outcrops where the two units can be seen.(Image: Joan Martí)
Volcanoes

A new study determines the influence of the topography over ...

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A drone image two weeks after the flank collapsed. The volcano peak that had measured 320 meters is missing. Credit: GFZ
Volcanoes

Early warning signals heralded fatal collapse of Krakatau volcano

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Subduction forced the younger oceanic crust down beneath the supercontinent Pangaea millions of years ago. Credit: University of Melbourne
Volcanoes

Kimberlites: The only volcanic deposits that we know are from the...

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Photographs of alkaline magmatic intrusions in Greenland. The region was volcanically and tectonically active around 1.2 billion years ago. Although no longer active, it is of major interest to geologists because the subsequent uplift and glacial erosion have cut deep into the rift and exposed the magma chambers that once lay well below the surface. Greenland’s magmas were sourced from a mantle that was enriched and contaminated by ancient crustal materials. Credit: University of St Andrews
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Ancient volcanoes reveal Earth’s recycled crust

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Volcano: UH geologists have discovered 10 million years of silence in a chain of volcanoes between Northeast Asia and Russia.
Volcanoes

Crack in Pacific seafloor caused volcanic chain to go dormant

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Kīlauea lava entry on the southeast coastline of Hawai'i Island as seen from UH research vessel Kaimikai o Kanaloa. Credit: Ryan Tabata, UH.
Volcanoes

Kīlauea lava fuels phytoplankton bloom off Hawai’i Island

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Lava fountains at Kilauea in Hawaii created a spatter cone, which was estimated to be 180 feet tall in this June 2018 photo. Credit: U.S. Geological Survey
Volcanoes

The ‘universal break-up criterion’ of hot, flowing lava?

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Steep crater wall of Ngozi volcano in the Poroto Ridge Forest Reserve, Tanzania. Credit: Egbert Jolie/GFZ
Volcanoes

Detecting hydrothermal vents in volcanic lakes

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Anak Krakatau in Lampung, Indonesia, in 2018
Volcanoes

Jurassic world of volcanoes found in central Australia

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A diagrammatic representation of the Earth in the Archaean showing subducted ocean floor carrying its chemical signature into the deep mantle. The signature which includes water and chlorine is preserved in melt inclusions contained within olivine and carried back up to surface within komatiite lava flows.
Volcanoes

Ancient drop of water rewrites Earth’s history

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An electron scanning microscope picture of an ash sample from a 55,500 years old ash layer in the NGRIP ice core. The ash shards are the larger pieces that look like broken glass. The colours are not true. The white bar at the bottom left represents 1/10 mm. Credit: University of Copenhagen
Volcanoes

Synchronization of ice cores using volcanic ash layers

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Volcano magma chamber. Credit: Cardiff University
Volcanoes

Scientists uncover deep-rooted plumbing system beneath ocean volcanoes

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