Geoscience News

Strong Winds Drive Formation of Colossal Rogue Waves, Scientists Say

Toffoli et al. report direct observations of surface waves from a stereo camera system along with concurrent measurements of wind speed during an expedition across the Southern Ocean in the austral winter aboard the South African icebreaker S.A. Agulhas II. Image credit: Alessandro Toffoli.
Apr 16, 2024 by News Staff

A rogue wave is a single swell that is much higher than nearby waves, which can damage ships or coastal infrastructure. Ocean waves are among the most powerful natural forces on Earth, and as global trends suggest ocean winds will blow harder because of climate change, ocean waves could become more powerful. In new research, scientists from the University of Melbourne found that rogue waves emerge from strong wind forces and unpredictable waveform...

read more...
The human occupied vehicle Alvin arriving at the seafloor. Image credit: J. McDermott, Lehigh University / T. Barreyre, CNRS / R. Parnell-Turner, Scripps Institution of Oceanography / D. Fornari, Woods Hole Oceanographic Institution / National Deep Submergence Facility / Alvin Group.

Researchers Discover Five New Hydrothermal Vents in Pacific Ocean

Mar 27, 2024 by News Staff

Scientists aboard the research vessel Atlantis have discovered five new deep-sea hydrothermal vent sites on the seafloor at 2,550 m (1.6 miles) depth....

This image from Mars Express’ High Resolution Stereo Camera shows the globe of Mars set against a dark background. The disk of the planet features yellow, orange, blue and green patches, all with an overall muted grey hue, representing the varying composition of the surface. Image credit: ESA / DLR / FU Berlin / G. Michael / CC BY-SA 3.0 IGO.

Mars Drives Deep-Ocean Circulation in Earth’s Oceans, Study Suggests

Mar 13, 2024 by News Staff

Geoscientists from Australia and France have used the geological record of Earth’s deep oceans to discover a connection between the orbits of our home...

An artist’s impression of the ‘Snowball Earth.’ Image credit: Oleg Kuznetsov, http://3depix.com / CC BY-SA 4.0.

Low Volcanic Carbon Dioxide Emissions Triggered Sturtian ‘Snowball Earth’ Glaciation: Study

Feb 8, 2024 by News Staff

The Sturtian ‘Snowball Earth’ glaciation (717 to 661 million years ago) is regarded as the most extreme interval of icehouse climate in Earth’s history....

Map of Sahul showing the extent of the now-submerged continental shelf (dark gray), with the area of the Northwest Shelf demarcated by a dashed black box, and the present-day distribution of the Köppen climate groups (seasonal precipitation and temperature) showing the extent of modern-day Australia and New Guinea. The tropical distribution of Late Pleistocene sites containing early axe technology are shown as black circles, sites without early axe technology as gray circles, and sites demonstrating Late Pleistocene occupation of the now submerged continental shelves as white circles. Image credit: Peter Hiscock / Norman et al., doi: 10.1016/j.quascirev.2023.108418.

Up To Half Million People Once Lived on Now-Submerged Northwest Shelf of Sahul

Dec 20, 2023 by News Staff

The new-submerged Northwest Shelf of Sahul — the combined landmass of Australia and New Guinea at times of lower sea level — was a vast area...

This ancient brick from the Slemani Museum dates to the reign of Nebuchadnezzar II (ca. 604 to 562 BCE) based on the interpretation of the inscription; this object was looted from its original context before being acquired by the Slemani Museum and stored in that museum with agreement from the central government. Image credit: Howland et al., doi: 10.1073/pnas.2313361120.

Cuneiform-Inscribed Bricks Unveil Strength of Ancient Geomagnetic Field in Mesopotamia

Dec 19, 2023 by News Staff

Reconstructing the behavior of Earth’s magnetic field during archaeological periods is crucial for both achieving a better understanding of the field...

Winter in Finland. Image credit: Andreas.

New Seismic Phenomenon Discovered: Frostquakes

Dec 12, 2023 by Enrico de Lazaro

Frostquakes are seismic events with frequencies of about 10-20 Hz and waveforms like those of tectonic events. They potentially can damage infrastructures...

Equipped with a specialized event-based camera, ESA astronaut Andreas Mogensen managed to capture this picture of a red sprite in October 2023. Image credit: ESA / DTU / A. Mogensen.

ESA Astronaut Captures Stunning Images of Rare Thunder Phenomenon

Dec 1, 2023 by News Staff

As part of the Thor-Davis experiment on the International Space Station (ISS), ESA astronaut Andreas Mogensen has captured images of a phenomenon called...

Kim et al. suggest that chemical exchange between the core and mantle over gigayears of deep transport of water may have contributed to the formation of the putative E’ layer. Image credit: Yonsei University.

Surface Water Penetrates Deep into Earth, New Research Suggests

Nov 14, 2023 by News Staff

A few decades ago, seismologists identified a thin layer with a lower velocity in Earth’s metallic liquid core. The origin of this layer, known as the...

Yuan et al. suggest that LLVPs are remnants of the ancient protoplanet Theia that violently collided with Earth billions of years ago in the same giant impact that created our Moon. Image credit: Hernán Cañellas.

Two Fragments of Protoplanet Theia Lie Deep within Earth, Geoscientists Say

Nov 1, 2023 by Enrico de Lazaro

A giant collision between the ancient protoplanet Theia and the proto-Earth about 4.5 billion years ago may have formed Earth’s Moon as well as two continent-sized...

This painting depicts an asteroid slamming into tropical, shallow seas of the sulfur-rich Yucatan Peninsula in what is today southeast Mexico. The aftermath of this immense asteroid collision, which occurred approximately 65 million years ago, is believed to have caused the extinction of the dinosaurs and many other species on Earth. Shown in this painting are pterodactyls, flying reptiles with wingspans of up to 50 feet, gliding above low tropical clouds. Image credit: Donald E. Davis / NASA.

Study: Asteroid Impact-Generated Dust Played Key Role in Dinosaur-Killing Mass Extinction

Oct 31, 2023 by News Staff

About 66 million years ago, a massive asteroid crashed into Earth near the site of the small town of Chicxulub in what is now Mexico. The impact eradicated...

Jamieson et al. discover an extensive relic pre-glacial landscape preserved beneath the central East Antarctic Ice Sheet despite millions of years of ice cover. Image credit: Jamieson et al., doi: 10.1038/s41467-023-42152-2.

Geoscientists Discover Ancient River-Carved Landscape beneath East Antarctic Ice Sheet

Oct 25, 2023 by News Staff

Geoscientists from Durham University and elsewhere have discovered a landscape that appears to have been formed by rivers at least 14 million years ago...

Space weather from the Sun, such as coronal mass ejections, disturbs Earth’s magnetic field, causing the aurorae and potentially decreasing the magnetic field’s reliability for migrating birds. Image credit: John Megahan.

Severe Space Weather Events Disrupt Nocturnal Bird Migrations, Researchers Find

Oct 11, 2023 by News Staff

Earth’s magnetic field is occasionally but regularly impacted by bursts of energy from the Sun (space weather), such as coronal mass ejections. Birds...

An artist’s illustration of a solar storm. Image credit: NASA.

Extreme Solar Storm Hit Our Planet 14,300 Years Ago, Subfossil Tree-Rings Show

Oct 9, 2023 by News Staff

In new research, scientists from the University of Leeds and elsewhere measured radiocarbon levels in ancient trees preserved within the eroded banks of...

3D seismic imaging and ocean drilling at the Hikurangi margin reveal a widespread and previously unknown fluid reservoir within the extensively hydrated (up to 47 vol % water) volcanic upper crust of the subducting Hikurangi Plateau large igneous province. Image credit: Gase et al., doi: 10.1126/sciadv.adh0150.

Geoscientists Discover Massive Undersea Water Reservoir Off New Zealand’s Coast

Oct 4, 2023 by News Staff

Revealed by 3D seismic imaging, the newly-discovered water reservoir lies 3.2 km (2 miles) under the ocean floor off the coast of New Zealand, where it...

Pangea Ultima temperature and habitability: (a) mammalian species diversity without the influence of humans; (b) habitable regions (green area) in the Pre-industrial simulation; (c-h) cold month mean temperature (CMMT; degrees Celsius); (c,f) warm month mean temperature (WMMT; degrees Celsius); (d,g) and habitable regions (green area); (e,h) under two end members of our sensitivity analysis: low-pCO2 conditions (280 ppm) Pangea Ultima planetary configuration (in 250 million years); (c-e) and high-pCO2 conditions (1,120 ppm) Pangea Ultima configuration (in 250 million years); (f-h) with global land surface temperature (GLST) (grid-weighted) indicated. Image credit: Farnsworth et al., doi: 10.1038/s41561-023-01259-3.

Climate Extremes Likely to Drive Mass Extinction of Land Mammals in 250 Million Years

Sep 26, 2023 by News Staff

In about 250 million years, all continents will converge to form Earth’s next supercontinent, Pangea Ultima. A natural consequence of the creation...

Plate tectonic reconstructions showing the position of Argyle within the McArthur-Yanliao Gulf. Image credit: Olierook et al., doi: 10.1038/s41467-023-40904-8.

Australian Pink Diamonds Were Formed when Supercontinent Nuna Was Breaking Up into Fragments

Sep 20, 2023 by News Staff

While it is known that for diamonds to form there needs to be carbon deep in the Earth, and for these diamonds to turn pink they must be subjected to forces...

An artist’s impression of the early Earth. Image credit: NASA.

Earth’s Day was a Constant 19.5 Hours for Almost 1.5 Billion Years, Study Says

Jul 13, 2023 by News Staff

New research from the University of Toronto shows that from approximately 2 billion until 600 million years ago, an atmospheric tide driven by the Sun...

Boulila et al. highlight a common, correlatable 36-million-year cycle in the diversity of marine genera as well as in tectonic, sea-level, and macrostratigraphic data over the past 250 million years of Earth history. Image credit: James St. John / CC BY 2.0.

36-Million-Year Geological Cycle Drives Marine Biodiversity, Scientists Say

Jul 11, 2023 by News Staff

The evolution of life on Earth has changed dramatically at tens of million-year time scales. However, the causal mechanisms of these changes remain unclear....

Hunga Tonga-Hunga Ha’apai volcanic eruption captured at December 30, 2021. Image credit: Tonga Geological Services.

Giant Eruption Plume from Tonga’s Volcano Produced Most Intense Lightning Rates Ever Detected

Jun 21, 2023 by Natali Anderson

On January 15, 2022, Hunga Volcano in Tonga produced the most violent eruption in the modern satellite era, sending a water-rich plume at least 58 km (36...

© 2011-2025. Sci.News. All Rights Reserved. | Back to top