Earth Sciences

Earth Sciences

Understanding risk to Seattle's high-rise buildings from a giant Cascadian earthquake

What is the risk to high-rise buildings from such a giant earthquake? Although four giant subduction earthquakes occurred elsewhere in the past century, there…

Earth Sciences

California's central coast earthquake hazards: New information about recently identified faults

Speakers from the US Geological Survey, PG&E and academia will compare fresh data to illuminate the complexity of faulting in the central California coastal…

Earth Sciences

Solomon Islands Earthquake Highlights Tsunami Risk Insights

On April 1, 2007, a tsunami-generating earthquake of magnitude 8.1 occurred East of Papua New Guinea off the coast of the Solomon Islands. The subsequent…

Earth Sciences

Volcanoes and Jet Engines: Unveiling Sound Similarities

The similarity between volcanic sounds too low for people to hear and the audible rumble made by turbulent air in a jet's propulsion system suggests there are…

Earth Sciences

Deep-Sea Microbes: Insights from Gulf Mud Volcanoes

Scientists have completed the first study of microbes that live within the plumbing of deep-sea mud volcanoes in the Gulf of Mexico, where conditions may…

Earth Sciences

Did a nickel famine trigger the 'Great Oxidation Event'?

“The Great Oxidation Event is what irreversibly changed surface environments on Earth and ultimately made advanced life possible,” says research team member…

Earth Sciences

New Arctic Satellite Data Reveals Sea Ice On Thin Ice

The researchers, who have been tracking Arctic sea ice cover with satellites since 1979, found that the winter of 2008-09 was the fifth lowest maximum ice…

Earth Sciences

Bent Tectonics: Unraveling Hawaii’s Unique Geological Shift

A sharp bend in the middle is the only blemish. The long-standing explanation for this distinctive feature was a change in direction of the Pacific oceanic…

Earth Sciences

Hispaniola’s 2008 Cyclone Surge: Five Storms in One Year

Hispaniola, the Caribbean island containing Haiti and the Dominican Republic, is located directly within the hurricane belt, and was pummeled by five tropical…

Earth Sciences

Ice-Free Arctic Summers Arriving Sooner Than Expected

“The Arctic is changing faster than anticipated,” said James Overland, an oceanographer at NOAA’s Pacific Marine Environmental Laboratory and co-author of the…

Earth Sciences

Arctic Ice Loss: Predictions Show Major Decline in 30 Years

A new analysis of computer models coupled with the most recent summer ice measurements indicates that the Arctic might lose most of its ice cover in summer in…

Earth Sciences

Simulations and Ancient Magnetism Suggest Mantle Plumes May Bend Deep Beneath Earth's Crust

Scientists believe mantle plumes are responsible for some of the Earth's most dramatic geological features, such as the Hawaiian islands and Yellowstone…

Earth Sciences

Permafrost Warming Boosts Methane Emissions in the Arctic

Higher temperatures in Arctic permafrost soils alter the community of methane producing microorganisms and lead to an increased emission of methane….

Earth Sciences

Technique measures heat transport in the Earth's crust

Putting a new spin on an old technique, Anne M. Hofmeister, Ph.D., research professor of earth and planetary sciences in Arts & Sciences at Washington…

Earth Sciences

Dust Insights: Unveiling Antarctica’s 80,000-Year Climate Story

Researchers have found that dust blown south to Antarctica from the windy plains of Patagonia – and deposited in the ice periodically over 80,000 years –…

Earth Sciences

New Insights Into Earth’s Largest Mass Extinction Event

The team of researchers from Russia, Austria, South Africa and Germany investigated whether a process that has been taking place since primordial times on…

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