Research - page 3

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"Teleconnections" can enhance weather events caused by local conditions and create extreme weather events

A recent article in Reviews of Geophysics explored how regional climate and weather is interconnected across space and time. Weather patterns are generally described in regional terms but they do not occur in isolation because they are part of the global atmospheric...

October 28, 2017

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Jets of ionospheric cold plasma discovered at the magnetopause

The Sun and Earth both produce powerful magnetic fields, and their intersection develops a complex system of physics that determines the space weather experienced by our planet. The solar wind - a constant stream of charged particles (plasma) emitted from the Sun -...

October 28, 2017

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Yellowstone spawned twin super-eruptions that caused volcanic winters

A new geological record of the Yellowstone supervolcano's last catastrophic eruption is rewriting the story of what happened 630 000 years ago and how it affected Earth's climate. This eruption formed the vast Yellowstone caldera observed today, the second...

October 27, 2017

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Anza Gap: Earthquake risk elevated with detection of spontaneous tectonic tremor

Scientists at the University of California, Riverside have detected spontaneous tectonic tremor - a signature of slow earthquakes deep below the earth’s surface - in the Anza Gap region of the San Jacinto Fault. Tectonic tremors are believed to increase the...

October 27, 2017

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Japanese earthquake zone strongly influenced by the effects of friction

Kyushu University-led researchers identified strong influence of pre-existing fault and plate structure on earthquake location and behavior in the Nankai Trough offshore of Japan. The islands of the Japanese archipelago are affected both by frequent, low-magnitude...

October 26, 2017

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Study links Raton Basin earthquakes to oil and gas fluid injections, again

A rash of earthquakes in southern Colorado and northern New Mexico recorded between 2008 and 2010 was likely due to fluids pumped deep underground during oil and gas wastewater disposal, says a new University of Colorado Boulder study. The study, which took place in...

October 26, 2017

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Scientists use seismic waves to measure tornado intensity

Seismic waves generated by tornadoes when they touch down could be used to measure a twister’s intensity, according to a new study. The new research examined a catastrophic tornado that struck Joplin, Missouri in May 2011 and revealed the size of seismic waves...

October 26, 2017

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UCERF3: Anticipating aftershocks in Southern California

Southern California has the highest earthquake risk of any region in the U.S., but exactly how risky and where the greatest risks lie remains an open question. Earthquakes occur infrequently and depend on complex geological factors deep underground, making them hard...

October 26, 2017

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Lightning produces afterglow of gamma radiation

Researchers previously thought that X-rays and gamma radiation produced by lightning only lasted for a very short time, about one ten-thousandth of a second. However, a new study reveals that the ionizing radiation of lightning appears to emit much longer than...

October 25, 2017

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New magma pathways after giant lateral volcano collapses

Giant lateral collapses are huge landslides occurring at the flanks of a volcano. Giant lateral collapses are rather common events during the evolution of a large volcanic edifice, often with dramatic consequences such as tsunami and volcano explosions. These...

October 25, 2017

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Why did the 2014 Oso landslide travel so far?

On Saturday, March 22, 2014, a devastating landslide roared across the North Fork of the Stillaguamish River, near Oso, Washington. The landslide killed 43 people as it plowed through the Steelhead Haven neighborhood. When it stopped, after crossing the river, the...

October 24, 2017

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Whales and dolphins have rich 'human-like' cultures and societies

Whales and dolphins (Cetaceans) live in tightly-knit social groups, have complex relationships, talk to each other and even have regional dialects - much like human societies. A major new study, published recently in Nature Ecology & Evolution, has linked the...

October 24, 2017

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9 million-year-old teeth suggests earliest human relatives lived in Europe

Researchers in Germany have recovered an unusual set of teeth estimated to be 9.7 million years old. The teeth are unlike any found in Europe or Asia, but closely resemble the teeth of Lucy, the famed female specimen of the hominin species Australopithecus...

October 24, 2017

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50 simulations of the ‘Really Big One’ show how a 9.0 Cascadia earthquake could play out

One of the worst nightmares for many Pacific Northwest residents is a huge earthquake along the offshore Cascadia Subduction Zone, which would unleash damaging and likely deadly shaking in coastal Washington, Oregon, British Columbia and northern California. The...

October 23, 2017

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Saline lakes around the world shrinking at alarming rates

Saline lakes around the world are shrinking in size at alarming rates. Lakes like Utah's Great Salt Lake, Asia's Aral Sea, the Dead Sea in Jordan and Israel, China's huge Lop Nur and Bolivia's Lake Popo are just a few that are in peril. These lakes...

October 23, 2017

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Life goes on for marine ecosystems after cataclysmic mass extinction

An international team of scientists, including Dr. Alex Dunhill from the University of Leeds, has found that although the mass extinction in the Late Triassic period wiped out the vast proportion of species, there appears to have been no drastic changes to the way...

October 21, 2017

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Environmental impact of Amazonian hydropower significantly underestimated

The environmental impact of hydropower generation in the Amazon may be greater than predicted, according to new University of Stirling research. The study suggests that estimates of biodiversity and carbon losses associated with tropical hydropower may be higher...

October 21, 2017