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Volcanoes

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Explosive Underwater Volcanoes Were a Major Feature of ‘Snowball Earth’

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Around 720-640 million years ago, much of the Earth’s surface was covered in ice during a glaciation that lasted millions of years. Explosive underwater volcanoes were a major feature of this ‘Snowball Earth’, according to new research led by the University of Southampton.

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Evidence of Large Volcanic Activity in the Caribbean Uncovered

Scientists from the University of Southampton have uncovered evidence of a previously unknown large volcanic eruption in the Caribbean Sea.

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UO-Led Expedition Probes Undersea Magma System

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A team of University of Oregon scientists is home after a month-long cruise in the eastern Mediterranean, but this was no vacation. The focus was the plumbing system of magma underneath the island of Santorini, formed by the largest supervolcanic eruption in the past 10,000 years.

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Traces of Islandic Volcanoes in a Northeastern German Lake

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Precise reconstruction of regional climate changes in the past.

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Evidence of Past Volcanic Activity in the Caribbean Sea

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Reconstructing the magnitude of past volcanic eruptions is important in informing predictions about future eruptions and hazards. This is difficult to accomplish from records on land -- old eruptions are often eroded away, buried beneath later eruptions, or obscured by vegetation and soil. Most volcanoes are close to the oceans, so much of the erupted material falls into seawater and accumulates on the seafloor.

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The Leonard C. Goodman Institute for Investigative Reporting Is Now Accepting Submissions

The deadline for this round of proposals is January 15, 2016. Candidates will be notified of decisions by the end of February 2016. The Institute pays a competitive rate--and covers expenses--for investigative reporting that advances social and economic justice. All stories are published in In These Times magazine and on InTheseTimes.com.

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Top Stories 11 Dec 2015; New Forensic Science Breakthroughs, Breast Cancer Treatment Difference by Age, Racial Disparities in Dialysis, and More...

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New ‘Geospeedometer’ Confirms Super-Eruptions Have Short Fuses

A new "geospeedometer" that can measure the amount of time between the formation of an explosive magma melt and an eruption confirms that the process took less than 500 years in several ancient super-eruptions.

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Simulating Path of 'Magma Mush' Inside an Active Volcano

The first simulation of the individual crystals in volcanic mush, a mix of liquid magma and solid crystals, shows the mixing to help understand pressure buildup deep inside a volcano.

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Fuego Volcano Eruptions in Guatemala Recorded and Studied by Michigan Tech Volcanologist

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American Volcanoes: Complacency, Uncertainty Contribute to Risks

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To combat complacency and improve disaster preparedness, a University at Buffalo researcher is heading a new project focusing on two locations: Kīlauea in the Hawaiian Islands, and the Long Valley caldera and volcanic field in eastern central California.

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Quantifying the Impact of Volcanic Eruptions on Climate

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Large volcanic eruptions inject considerable amounts of sulphur in the stratosphere which, once converted into aerosols, block sun rays and tend to cool the surface of the Earth down for several years. An international team of researchers has just developed a method, published in Nature Geoscience, to accurately measure and simulate the induced drop in temperature.

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Connecting People and Geology on Volcanoes

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Luke Bowman, who received his PhD from Michigan Tech this summer, gets to the heart of geohazards on the San Vicente Volcano in El Salvador.

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Earthquake Not to Blame for Indonesian Mud Volcano

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New research led by the University of Adelaide hopes to close the debate on whether a major mud volcano disaster in Indonesia was triggered by an earthquake or had man-made origins.

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Scientists See Deeper Yellowstone Magma

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University of Utah seismologists discovered and made images of a reservoir of hot, partly molten rock 12 to 28 miles beneath the Yellowstone supervolcano, and it is 4.4 times larger than the shallower, long-known magma chamber. The hot rock in the newly discovered, deeper magma reservoir would fill the 1,000-cubic-mile Grand Canyon 11.2 times.

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A Stiff New Layer in Earth's Mantle

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By crushing minerals between diamonds, a University of Utah study suggests the existence of an unknown layer inside Earth: part of the lower mantle where the rock gets three times stiffer. The discovery may explain a mystery: why slabs of Earth’s sinking tectonic plates sometimes stall and thicken 930 miles underground.

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URI Grad Student Investigates Unexplored Underwater Volcano Off Solomon Islands

URI doctoral student Brennan Phillips is on the hunt for underwater volcanoes so he can collect data on the plumes of hot fluids and chemical compounds emanating from hydrothermal vents in and around the craters. His latest adventure took him to the unexplored Kavachi volcano off the Solomon Islands.

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Media Tip Sheet: URI Research to Be Presented at International Earth Science Meeting, Dec. 15-19

Research on underwater volcanoes, Great Lakes pollution, subseafloor life and much more will be among the 40 projects that will be presented by scientists from the University of Rhode Island’s Graduate School of Oceanography at the American Geophysical Union’s fall meeting in San Francisco from Dec. 15 to 19.

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UW Team Explores Large, Restless Volcanic Field in Chile

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For seven years, an area larger than the city of Madison has been rising by 10 inches per year. That rapid rise provides a major scientific opportunity: to explore a mega-volcano before it erupts. That effort, and the hazard posed by the restless magma reservoir beneath Laguna del Maule, are described in a major research article in the December issue of GSA Today.

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How Water Could Have Flowed on Mars

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The surface of Mars clearly shows what looks like evidence of flowing water: riverbeds, deltas, and the like. But these signs have been a puzzle – until now. The Weizmann Institute’s Dr. Itay Halevy and Brown University’s Dr. James Head III have identified a possible source: violent eruptions from massive volcanoes that periodically melted Mars’ ice.


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