Research - page 4

solar eclipse egypt

Oldest recorded solar eclipse helps date the Egyptian pharaohs

Researchers have pinpointed the date of what could be the oldest solar eclipse yet recorded. The event, which occurred on October 30, 1207 BC could have consequences for the chronology of the ancient world. Using a combination of the biblical text and an ancient...

October 31, 2017

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Drilling into magma reservoirs to improve volcano forecasts

The roots of volcanoes remain enigmatic, largely because geophysical and petrological models remain rudimentary. Scientific drilling and exploration can help. When it comes to forecasting eruptions, volcano observatories rely mostly on real-time signals from...

October 31, 2017

starburst

Spitzer reveals ancient galaxies' frenzied starmaking

A deep look back to the early universe by NASA's Spitzer Space Telescope has revealed a surprisingly rowdy bunch of galaxies. Within a large galaxy sample, Spitzer witnessed around 15% of galaxies undergoing bouts of extreme starmaking, called starbursts. The...

October 31, 2017

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Surprisingly erratic X-ray auroras discovered at Jupiter

ESA and NASA space telescopes have revealed that, unlike Earth’s polar lights, the intense auroras seen at Jupiter’s poles unexpectedly behave independently of one another. Auroras have been seen in many places, from planets and moons to stars, brown...

October 30, 2017

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How glaciers disappeared from Scotland at the end of the last Ice Age

Research led by a Stirling academic, Dr. Tom Bradwell, has revealed how glaciers disappeared from Scotland at the end of the last Ice Age. Bradwell led a research team in taking samples offshore around the north-west of Scotland, and Shetland. The activity was part...

October 29, 2017

comet ison 2013

Scientists detect comets outside our solar system

Scientists from MIT and other institutions, working closely with amateur astronomers, have spotted the dusty tails of six exocomets — comets outside our solar system — orbiting a faint star 800 light years from Earth. These cosmic balls of ice and dust,...

October 29, 2017

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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

california map san jacinto fault

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

nankai trough study area

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

raton basin colorado new mexico

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

lightning in the canyon

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