Research - page 2

tornado forecasting

Breakthrough in tornado short-term forecasting

When mere seconds of storm warning could mean the difference between harm or safety, two researchers with Western University ties have developed a tornado-prediction method they say could buy as much as 20 minutes more warning time. These radar-based calculations...

November 29, 2017

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IceCube experiment measures Earth's ability to absorb neutrinos

For the first time, a science experiment has measured Earth's ability to absorb neutrinos - the smaller-than-an-atom particles that zoom throughout space and through us by the trillions every second at nearly the speed of light. The experiment was achieved with...

November 24, 2017

movement of seismic waves

Mysterious deep-Earth seismic signature explained

New research on oxygen and iron chemistry under the extreme conditions found deep inside the Earth could explain a longstanding seismic mystery called ultralow velocity zones. The findings could have far-reaching implications on our understanding of Earth's...

November 24, 2017

thunderstorms create radioactivity

Thunderstorms create radioactivity

A new study, published this week in Nature, shows that thunderstorms can also produce radioactivity by triggering nuclear reactions in the atmosphere. This may sound like the plot of a blockbuster science fiction disaster. But in reality, it’s nothing to worry...

November 23, 2017

kaolinite

New insights into processes that cause volcanism

The first observation of a super-hydrated phase of the clay mineral kaolinite could improve our understanding of processes that lead to volcanism and affect earthquakes. In high-pressure and high-temperature X-ray measurements that were partly conducted at DESY...

November 23, 2017

geomagnetic storm

Plasma space tornadoes let high-energy particles into near-Earth space

Researchers using NASA's Magnetospheric Multiscale mission (MMS) discovered tornado-like swirls of plasma create a magnetosphere tumultuous enough to let harmful high-energy particles from the Sun slip into near-Earth space. The discovery is important for...

November 23, 2017

solar flare pulse

NASA detects solar flare pulses at Sun and Earth

When our Sun erupts with giant explosions—such as bursts of radiation called solar flares—we know they can affect space throughout the solar system as well as near Earth. But monitoring their effects requires having observatories in many places with many...

November 20, 2017

shift in ozone trends

Three decades of measurements show ozone's ups and downs

Climate scientists studying three decades of ozone measurements from seven satellites see a positive trend in global recovery after international efforts to curb ozone-depleting substances. The part of Earth’s atmosphere with high concentrations of ozone gas...

November 20, 2017

a supernova

Astronomers discover a star that just keeps shining

An international team of astronomers led by Las Cumbres Observatory (LCO) has made a bizarre discovery; a star that just keeps shining. Supernovae, the explosions of stars, have been observed in the thousands and in all cases they marked the death of a star. But in...

November 19, 2017

planet ross 128b

Closest temperate world orbiting quiet star discovered

A temperate Earth-sized planet has been discovered only 11 light-years from the Solar System by a team using ESO’s unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be...

November 19, 2017

functional diversity of forests with remote sensing

Mapping functional diversity of forests with remote sensing

Productivity and stability of forest ecosystems strongly depend on the functional diversity of plant communities. UZH researchers have developed a new method to measure and map functional diversity of forests at different scales – from individual trees to...

November 19, 2017

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Images of strange solar system visitor peel away some of the mystery

A strange visitor, either asteroid or comet, zipping through our solar system at a high rate of speed is giving astronomers a once-in-a-generation opportunity to examine up close an object from somewhere else in our galaxy. "It’s a really rare...

November 19, 2017

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Influx of Earth-bound positrons must have exotic origin, study suggests

The excess positrons arriving at Earth must have a more exotic origin than nearby pulsars, report researchers. Their results are based on observations from the High-Altitude Water Cherenkov (HAWC) gamma-ray observatory in Mexico, which detects the shower of...

November 18, 2017

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Solar minimum surprisingly constant

Using more than half a century of observations, Japanese astronomers have discovered that the microwaves coming from the Sun at the minimums of the past five solar cycles have been the same each time, despite large differences in the maximums of the cycles. In...

November 18, 2017

forecasting la nina drought

Improved ability to predict strength and duration of droughts caused by La Niña

Two new studies from The University of Texas at Austin have significantly improved scientists' ability to predict the strength and duration of droughts caused by La Niña - a recurrent cooling pattern in the tropical Pacific Ocean. Their findings, which...

November 17, 2017

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Salt pond in Antarctica, among the saltiest waters on Earth, is fed from beneath

At the base of the Transantarctic Mountains lies a geological oddity. Don Juan Pond is one of the saltiest bodies of water on the planet, filled with a dense, syrupy brine rich in calcium chloride that can remain liquid to -50 °C (-58 °F), far below the...

November 17, 2017

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Astronomers discover new type of cosmic explosion

An international team of astronomers, including a University of Southampton expert, has discovered a new type of explosion in a distant galaxy. The explosion, called PS1-10adi, seems to prefer active galaxies that house supermassive black holes consuming the gas and...

November 16, 2017