Articles tagged "research"

iceland 2

Massive sunken continent could be resting underneath Iceland

An international team of geologists believes they have identified a sunken continent hidden under Iceland and the surrounding ocean, which they called Icelandia. The scientists said the continent could stretch from Greenland all the way to Europe. If proven, this...

July 11, 2021

solar storm

Using smartphones to create distributed space weather observatory

A study by NASA astronomer Sten Odenwald found that magnetometers in smartphones can detect small disturbances of the Earth's magnetic field, allowing such devices to be used to form a distributed space weather observatory. The 3-axis Hall-effect magnetometer...

June 13, 2021

sunspots

Scientists confirm existence of Alfven Waves, magnetic waves in the Sun's photosphere

Researchers have confirmed the presence of magnetic plasma waves in the Sun's photosphere, catching them in action. Known as Alfven Waves, these fascinating waves were first predicted in 1947. The Alfven Waves, named after Nobel Prize-winning scientist Hannes...

June 13, 2021

mauna loa hawaii 2

Large earthquake could trigger eruption of Mauna Loa, world's largest active volcano

Scientists from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science have shed light on the hazards of Hawaii's Mauna Loa, the largest active volcano on Earth, finding that a large earthquake could set off an eruption. The team...

June 09, 2021

congo river

Longest underwater avalanche monitored in action continuously self-accelerated for over 1 000 km

In a new paper, scientists have reported what they say is the longest sediment avalanche measured so far in action and the only monitored flow to continuously self-accelerate for over 1 000 km (620 miles). The event occurred off the coast of West Africa, in a deep...

June 08, 2021

deep earthquake

New study solves mystery behind Earth's deepest earthquakes

The cause of the deepest earthquakes on Earth has been a mystery to scientists for more than a century. In a new study, a team of scientists may have solved the case by identifying water as the key factor that causes deep-focus quakes. Most earthquakes occur near...

June 05, 2021

toba supervolcano eruption 2

Supervolcanic eruption of Toba destroyed ozone layer, causing population bottleneck

A catastrophic drop in atmospheric ozone layers 60 000 to 100 000 years ago likely contributed to a population bottleneck during that period. According to a new study, the event was triggered by the eruption of the Toba supervolcano in Sumatra, Indonesia. "Toba...

June 05, 2021

coast earthquake

World's longest recorded earthquake lasted for 32 years

The devastating M8.5 earthquake that shook Sumatra, Indonesia, in 1861 was long believed to be a sudden rupture on a previously quiescent fault. However, new research showed that tectonic plates below the island had been slowly crashing against each other for 32...

June 04, 2021

wildfire june 2 2021

Scientists identify new atmospheric circulation over the Arctic

A team of scientists from Japan, South Korea, and the USA, has identified a new pattern of atmospheric circulation around the Arctic that could drive co-occurrences of heatwaves and large-scale wildfires over the region, particularly in Siberia and subpolar North...

June 04, 2021

seismic imaging pacific ocean 2

Study reveals inner workings of slow-slip earthquakes

Slow-slip earthquakes have been detected at many earthquake hotspots in the world, including areas around the Pacific Ring of Fire, but it remains unclear as to how they are linked to the damaging quakes that take place there. In a new study, researchers at The...

May 26, 2021

van allen probes conception andy kale

New project for more accurate space weather predictions

Professor Clare Watt, a space plasma physicist from Northumbria's Department of Mathematics, Physics and Electrical Engineering, is leading a new project that aims to forecast space weather more accurately. Funded by the Science and Technology Facilities Council...

May 25, 2021

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Electromagnetic anomalies occurring before large earthquakes

A new study published in Earth, Planets and Space sheds new light on the electromagnetic anomalies occurring before large earthquakes. The research supports the hypothesis that fault rupture progresses just before an earthquake, and the invading gas is charged and...

May 24, 2021

comet tatcher lyrids seti institute f

Situational awareness for potentially hazardous comets last near-Earth as far back as 4 000 years ago

SETI Institute researchers are reporting that they can now detect showers from the debris in the path of comets that pass close to Earth orbit and are known to return as infrequent as once every 4 000 years. "This creates a situational awareness for potentially...

May 21, 2021

locust swarm fao

Satellite-assisted models for detection of desert locust breeding grounds

NASA-funded researchers examined satellite-based soil moisture and soil composition in the hope to predict optimal breeding sites of locust swarms. The team is now working to integrate the data into the FAO locust support to be better prepared for the next major...

May 16, 2021

gnss station 2

Researchers develop first space-based system that can monitor earthquakes and tsunamis

Researchers have developed the first-of-its-kind space-based monitoring system that uses the Global Navigational Satellite System (GNSS) to measure crustal deformation, which can provide seismic monitoring for natural disasters like large earthquakes and tsunamis....

May 16, 2021

deep earthquake

Deep earthquakes in Texas driven by shallow wastewater injection

Virginia Tech geoscientists have found that shallow wastewater injections can drive widespread deep earthquake activity in oil and gas production fields. The team came up with the finding after studying the Delaware Basin in western Texas, one of the most productive...

May 16, 2021

diffuse auroral eraser new type of aurora research f

Decades-old video footage reveals new type of aurora - Diffuse Auroral Eraser

Decades-old video footage has shown a never-before-seen aurora, which scientists at the University of Iowa called the Diffuse Auroral Eraser. This elusive type of aurora first appears as a brighter stripe within a fainter, more diffused aurora. When the stripe...

May 16, 2021

kilauea eruption hawaii 2018

Caldera collapse triggers large-scale volcanic eruptions

Researchers at NASA’s Jet Propulsion Laboratory in Southern California identified what triggers large-scale volcanic eruptions and the conditions that lead to them. Using data from the 2018 Kilauea eruption in Hawaii-- its largest volcanic eruption in over 200...

May 11, 2021

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New study reassesses strongest Mediterranean earthquake in history

A new study published in AGU Advances highlighted and reassessed the Crete Earthquake-- believed to be the strongest recorded earthquake in the Mediterranean, which occurred in AD 365. Using new radiocarbon dates and historical records, the researchers showed how...

May 11, 2021

gulf stream migration 2

Scientists link rapid warming in Northwest Atlantic Shelf to migrating Gulf Stream

Parts of the North Atlantic saw some of the Earth's most extreme temperature anomalies, which had a major blow on fisheries. A new study reveals the link between the abrupt warming in the region to the Gulf Stream migrating closer to Newfoundland, Canada. The...

May 10, 2021

japan tsunami aftermath 2011 f

Earthquakes and tsunamis from subduction zones more destructive than current estimates

Earthquakes and tsunamis from subduction zones might be more hazardous than current estimates, a new study suggests. Researchers from the University of New Mexico and the Nanyang Technological University developed a new method to assess the dangers represented by...

May 05, 2021

venus by parker solar probe july 11 2020 f

Venus' ionosphere undergoes puzzling changes over the 11-year solar cycle

A new study published today in Geophysical Research Letters confirms that Venus' upper atmosphere undergoes puzzling changes over the Sun's 11-year activity cycle. The scientists studied data provided by Parker Solar Probe's first direct measurement of...

May 03, 2021

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Great auroral storms occur every 40 to 60 years, new historical study shows

A new study published in the Journal of Space Weather and Space Climate suggests that great auroral storms occur about every 40 - 60 years, although the distribution of such events is far from even. Space weather storms typically have solar, interplanetary,...

May 02, 2021

lightning 2

Observations reveal lightning as the source of extreme air-cleaning oxidants

Observations from NASA's storm-chasing aircraft DC-8 reveal that lightning can produce extremely high concentrations of two major oxidants that help clear the air and the atmosphere. In May and June 2012, the DC-8 jet flew through the eye of thunderstorms over...

May 01, 2021

solar flare effects on magnetosphere 2

Impacts of solar flare on the Earth's magnetosphere

In a new study published recently in Nature Physics, researchers at Shandong University in China and the National Center for Atmospheric Research in the U.S. provided new insight into the effects of solar flares on the Earth's magnetosphere. The scientists...

April 29, 2021

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Record-breaking solar flare erupts from Proxima Centauri

Scientists have observed an extreme, record-breaking solar flare from Proxima Centauri, our sun's closest star. The outburst was roughly 100 times more powerful than any similar event seen from our own sun. Proxima Centauri is a small but 'mighty' red...

April 28, 2021

coronal rain 2

Researchers propose new formation mechanism for solar coronal rain

Coronal rain is a phenomenon on the Sun that plays a key role in the mass cycle between the hot corona and cool chromosphere. In a new study, a team of researchers has proposed a new formation mechanism for coronal rain along open magnetic structures, showing that...

April 24, 2021

datong city china

Aerial images reveal invisible fault in Datong City, China

Aerial photos of Yudong District, Datong City in Shanxi Province, China, have aided scientists in their search for a hidden fault underneath the city, the team reported at the Seismological Society of America's 2021 Annual Meeting. Photos taken from the 1960s...

April 24, 2021

submarine volcano

Underwater volcanoes release enough energy to power a continent

Submarine volcanoes or those deep in our oceans can release extremely powerful energy, high enough to power a continent, new research suggests. It was previously believed that underwater volcanoes were much less violent than those on land due to relatively...

April 23, 2021

colombia apr 20 2021

GPS data suggests possible large earthquake and tsunami hazard for northwest Colombia

A GPS network data revealed a shallow and fully locked part on the Caribbean subduction zone in Colombia, indicating that there is a possible large earthquake and tsunami hazard for the country's northwest region. Colombia is situated in the middle of a complex...

April 23, 2021

alpine fault_002

Study reveals mechanism of naturally occurring 'earthquake gate'

A new study reveals the workings of an "earthquake gate" -- a naturally occurring blocker that decides which quakes are allowed to grow into M8.0 or greater. "An earthquake gate is like someone directing traffic at a one-lane construction zone,"...

April 21, 2021

kilauea 2018 2

Measuring magma viscosity helps predict volcanic eruption style

The style of a volcanic eruption depends on magma viscosity, as well as its hazard potential, but it can only be measured during or after an eruption. After a study of the 2018 Kilauea Eruption in Hawaii, a team of scientists was able to identify an indicator of...

April 15, 2021

alaska volcanic eruption 2009

Detecting significant thermal unrest years before volcanic eruption

Scientists at NASA’s Jet Propulsion Laboratory (JPL) and the University of Alaska (UA) have developed a new method that may lead to earlier predictions of volcanic eruptions. There are telltale warning signs that a volcano is likely to erupt in the future,...

April 14, 2021

jupiter aurora 3

Study reveals key discovery about aurora activity on Jupiter

A team of international researchers has made a major discovery about aurora activity on Jupiter. Their study supports the previously controversial idea that Jupiter's polar cap is threaded in part with closed magnetic field lines and proves the lights hold clues...

April 14, 2021

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Study reveals anomaly in pre-seismic atmospheric radon associated with inland earthquakes

Previous studies have shown elevated levels of radon in the atmosphere prior to the mainshock of a huge inland earthquake. However, in a new study, researchers revealed an anomaly in this phenomenon as they found that the concentration of the radioactive element...

April 13, 2021

theia and earth 2

Enormous chunks of alien planet Theia are buried beneath the Earth, research suggests

Scientists believe that around 4.5 billion years ago, a protoplanet called Theia collided with the Earth, sending debris into space that eventually formed the Moon. According to new research, the crash also likely left enormous chunks-- even millions of times larger...

April 11, 2021

el nino la nina

Study shows correlation between solar variability and El Nino-La Nina events

A new study shows a link between the end of solar cycles and a switch from El Nino to La Nina events in the Pacific Ocean, indicating that solar variability can trigger seasonal weather variability on Earth. If the connection holds up, it could improve the...

April 06, 2021

meteotsunami 2018 2

NOAA study takes step closer to predicting meteotsunamis

A new study by NOAA shows the promise of forecasting meteotsunamis after scientists were able to reconstruct the first documented meteotsunami in the Great Lakes in 2018. On April 13, 2018, a huge wave surged across Lake Michigan, flooding the shores of Ludington...

April 02, 2021

antarctica meteorite

Large meteoritic event over Antarctica 430 000 years ago

An international team of scientists has found new evidence that a low-altitude meteoritic event occurred over Antarctica 430 000 years ago. Cosmic particles recovered on the summit of Walnumfjellet indicate that an unusual touchdown event reached the continent's...

April 01, 2021

dark matter 04 01 2021 2

New model replaces dark energy theory with magnetic forces

It has been long believed that 70 percent of the universe is composed of dark energy, which makes it expand at an ever-increasing rate. However, a new model by researchers from the University of Copenhagen (UCPH) suggests that the expansion is due to a dark...

April 01, 2021