Showing 20 articles starting at article 141

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Geomagnetic Storms, Geoscience: Volcanoes

Return to the site home page

     (via sciencedaily.com) 

The sun's convection zone plays a key role in the generation and evolution of the Sun's magnetic field. Analyzing data sets spanning more than 20 years, researchers have obtained the most comprehensive picture of the north-south flow of plasma in the convection zone ever. The flow goes around the convection zone in each hemisphere in about 22 years.

     (via sciencedaily.com) 

Extreme space weather events can significantly impact systems such as satellites, communications systems, power distribution and aviation. They are driven by solar activity which is known to have an irregular but roughly 11 year cycle. By devising a new, regular 'sun clock', researchers have found that the switch on and off of periods of high solar activity is quite sharp, and are able to determine the switch on-off times.

     (via sciencedaily.com) 

Scientists have reproduced a process that occurs in space to deepen understanding of what happens when the Earth encounters the solar wind.

     (via sciencedaily.com) 

On May 29, 2020, a family of sunspots -- dark spots that freckle the face of the Sun, representing areas of complex magnetic fields -- sported the biggest solar flare since October 2017. Although the sunspots are not yet visible (they will soon rotate into view over the left limb of the Sun), NASA spacecraft spotted the flares high above them.

     (via sciencedaily.com) 

A new study offers some of the first evidence that gray whales might depend on a magnetic sense to find their way through the ocean. This evidence comes from the discovery that whales are more likely to strand themselves on days when solar storms disrupt Earth's magnetic field.

     (via sciencedaily.com) 

What if solar cells worked at night? That's no joke. In fact, a specially designed photovoltaic cell could generate up to 50 watts of power per square meter under ideal conditions at night, about a quarter of what a conventional solar panel can generate in daytime, according to a recent concept article.

     (via sciencedaily.com) 

A 'great' space weather super-storm large enough to cause significant disruption to our electronic and networked systems occurred on average once in every 25 years according to a new study.

     (via sciencedaily.com) 

JAXA and NASA satellite observations show where killer electrons are generated in the Van Allen radiation belts surrounding Earth.

     (via sciencedaily.com) 

Magnetic reconnection, a process in which magnetic field lines tear and come back together, releasing large amounts of kinetic energy, occurs throughout the universe. The process gives rise to auroras, solar flares and geomagnetic storms that can disrupt cell phone service and electric grids on Earth. A major challenge in the study of magnetic reconnection, however, is bridging the gap between these large-scale astrophysical scenarios and small-scale experiments that can be done in a lab.

     (via sciencedaily.com) 

Scientists have developed a novel, standardized way of quantifying and comparing these variations in solar power. The new study may help guide the development and performance of solar photovoltaic farms -- systems that harness the sun's energy and convert it to electricity.

     (via sciencedaily.com) 

A new study by physicists mimicked solar winds in the lab, confirming how they develop and providing an Earth-bound model for the future study of solar physics.

     (via sciencedaily.com) 

New research into waves that travel through Earth's magnetosphere deepen our understanding of the region and its interaction with our own planet, and open up new ways to study other planets across the galaxy.

     (via sciencedaily.com) 

Magnetic disturbances caused by phenomena like the northern lights can be tracked by a 'social network' of ground-based instruments, according to a new study.

     (via sciencedaily.com) 

New research shows that the sun could experience a massive burst of energy called a superflare sometime in the next several thousand years.

     (via sciencedaily.com) 

The celestial phenomenon known as STEVE is likely caused by a combination of heating of charged particles in the atmosphere and energetic electrons like those that power the aurora, according to new research. In a new study, scientists found STEVE's source region in space and identified two mechanisms that cause it.

     (via sciencedaily.com) 

A new, first-of-its-kind space weather model reliably predicts space storms of high-energy particles that are harmful to many satellites and spacecraft orbiting in the Earth's outer radiation belt.

     (via sciencedaily.com) 

Solar storms can be far more powerful than previously thought. A new study has found evidence for the third known case of a massive solar storm in historical times. The researchers believe that society might not be sufficiently prepared if a similar event were to happen now.

     (via sciencedaily.com) 

The Earth's magnetic shield booms like a drum when it is hit by strong impulses, according to new research.

     (via sciencedaily.com) 

New research shows that the sun's magnetic waves behave differently than currently believed.

     (via sciencedaily.com) 

On Jan. 4, 2019, at 4:37 a.m. EST the CAPER-2 mission launched from Norway. The rocket flew through active aurora borealis, or northern lights, to study the waves that accelerate electrons into our atmosphere.