Research - page 4

utah volcanoes march 3 2021 3

Rare earthquakes highlight Black Rock Desert volcanic field in Utah

Rare earthquakes in the Black Rock Desert in Utah have provided a glimpse into the volcanic system of the field, which is still active despite not showing signs of erupting, according to a new study. A pair of earthquake sequences in September 2018 and April 2019,...

March 03, 2021

gulf stream earth march 1 2021 2

The Atlantic Meridional Overturning Circulation (AMOC) at its weakest in more than 1 000 years

The Atlantic Meridional Overturning Circulation (AMOC), one of the Earth’s major ocean circulation systems that underpins the Gulf Stream, is now at the weakest it has been in more than 1 000 years, a new study shows. Models suggest that this could trigger...

March 01, 2021

binary stars feb 24 2021 3

New map of solar neighborhood shows binary stars are all around us

The recent data from the Gaia space observatory has allowed astronomers, for the first time, to create a large 3D atlas of widely separated binary stars--1.3 million of them, within roughly 3 000 light-years of Earth. The atlas, generated by Ph.D. astrophysics...

February 25, 2021

mediterranean region

Researchers develop better forecasting of extreme rainfall events in Mediterranean countries

Researchers at the European Center for Medium-range Weather Forecasts and TU Freiberg developed a new framework to improve forecasting of extreme rainfall events in Mediterranean countries. The scientists noted that it was challenging to predict how many days in...

February 23, 2021

groundwater recharge africa feb 19 2021 2

Scientists develop first map of groundwater recharge rates across Africa

An international team of scientists published a new study providing the first-ever map of the groundwater recharge rates across Africa based on ground measurements. The study shows data about where groundwater exists and the rate at which groundwater is replenished,...

February 20, 2021

earth magnetic pole

Study: Earth's magnetic reversal in combination with Grand Solar Minimum 42 000 years ago caused sudden, massive climate change

Around 42 000 years ago, the Earth's magnetic fields reversed, triggering sudden, major climate change, extinction events, and long-term changes in human behavior, a new study shows. Authors said they have precisely characterized the geomagnetic reversal and...

February 19, 2021

black holes ngc 6397 f

Hubble discovers concentration of small black holes at the heart of globular cluster NGC 6397

Astronomers on the hunt for an intermediate-mass black hole at the heart of the globular cluster NGC 6397, found something they weren’t expecting -- a concentration of smaller black holes lurking there instead of one massive black hole. Image credits: NASA,...

February 11, 2021

seismic echoes feb 1 2021 2

Geophysicists detect widespread structures near the Earth's core

Geophysicists from the University of Maryland made the first analysis of seismic echoes from hundreds of earthquakes at once, unveiling more widespread, heterogenous structures at the core-mantle boundary than previously known. Past studies were limited to single...

February 01, 2021

CME 2002 3

Researchers investigate what happens if 'perfect solar storm' hits Earth

In a new study published in Space Weather journal, researchers investigated what might happen if a 'perfect' coronal mass ejection (CME) hit the Earth. Using state‐of‐the‐art computer models to simulate the worst-case solar storm, the team found that...

January 28, 2021

solar activity over the past 1000 years ethz f

Researchers reconstruct 11-year solar cycles all the way back to year 969

An international team of researchers reconstructed the Sun's 11-year cycles all the way back to year 969 using measurements of radioactive carbon in tree rings. The findings help scientists better understand the dynamics of the Sun, enabling more accurate dating...

January 22, 2021

alaska volcanoes dec 10 2020

Six Alaskan volcanoes may be part of one massive supervolcano

Six stratovolcanoes comprising the Islands of Four Mountains in Alaska's central Aleutian Islands may not be separate volcanoes, but instead a part of one enormous volcanic caldera system, according to scientists who presented the evidence at the American...

December 10, 2020

position and velocity map of the milky way galaxy

New map of Milky Way Galaxy shows Earth is 7 km/s faster and 2 000 LY closer to the galactic center

Earth just got 7 km/s faster and about 2 000 light-years closer to the hypothesized supermassive black hole in the center of the Milky Way Galaxy, according to results of a new and better model of the galaxy based on new observation data, including a catalog of...

November 28, 2020

lightning nov 26 2020

Scientists find 'superbolts' flashing 1 000 brighter than normal lightning

Two new studies show that the brightest lightning events on Earth called "superbolts" can be more than 1 000 times brighter than normal lightning flashes. The findings could help scientists understand these mysterious flashes better, improving safety...

November 27, 2020

STEVE nov 26 2020 5

Citizen scientists discover new, mysterious feature of aurora-like phenomenon STEVE

Citizen scientists have discovered that the aurora-like phenomenon called STEVE or Strong Thermal Emission Velocity Enhancement has a new feature-- small, green fence-like lights streaking through the atmosphere at 1 600 km/h (1 000 mph). STEVE is also a discovery...

November 26, 2020

mars water concept nasa

Research suggests water is naturally occurring on all rocky planets

A new study published recently in Science Advances suggests that water may be naturally occurring on planets and does not require an external source like water-rich asteroids. The study turns the current theory about the emergence of water upside down. The research...

November 11, 2020

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New technology detects long-hidden earthquakes

Scientists at the Stanford School of Earth, Energy, and Environmental Sciences described a new method for using artificial intelligence to detect millions of long-hidden small earthquakes or microquakes, providing possible hints about how earthquakes evolve. Big...

November 04, 2020

full sequence Matuyama–Brunhes geomagnetic reversal

Most detailed and complete record yet of Earth's last magnetic reversal

A team of researchers from Japan made the most detailed and complete record to date of Earth's last magnetic reversal that took place about 773 000 years ago. Their results were published recently in the Progress in Earth and Planetary Science, a Springer...

November 02, 2020