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Categories: Geoscience: Oceanography, Space: Cosmology

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Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Geology Geoscience: Oceanography Paleontology: Climate
Published

Past climate change to blame for Antarctica's giant underwater landslides      (via sciencedaily.com)     Original source 

Scientists found weak, biologically-rich layers of sediments hundreds of meters beneath the seafloor which crumbled as oceans warmed and ice sheets declined. The landslides were discovered in the eastern Ross Sea in 2017, by an international team of scientists during the Italian ODYSSEA expedition, and scientists revisited the area in 2018 as part of the International Ocean Discovery Program (IODP) Expedition 374 where they collected sediment cores to understand what caused them.

Biology: Biochemistry Biology: General Biology: Marine Biology: Microbiology Biology: Zoology Ecology: Sea Life Geoscience: Geography Geoscience: Oceanography
Published

Perfect 'pathogen' storm: Vibrio bacteria, Sargassum and plastic marine debris      (via sciencedaily.com)     Original source 

Little is known about the ecological relationship of Vibrio bacteria with Sargassum. Evidence also is sparse as to whether vibrios colonizing plastic marine debris and Sargassum could potentially infect humans. As summer kicks off and efforts are underway to find solutions to repurpose Sargassum, could these substrates pose a triple threat to public health? Results of a study representing the first Vibrio spp. genome assembled from plastic finds Vibrio pathogens have the unique ability to 'stick' to microplastics, harboring potent opportunistic pathogens.

Biology: Marine Biology: Zoology Ecology: Sea Life Environmental: Ecosystems Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

New use for A.I.: Correctly estimating fish stocks      (via sciencedaily.com)     Original source 

A newly published artificial intelligence (AI) algorithm is allowing researchers to quickly and accurately estimate coastal fish stocks without ever entering the water.

Computer Science: General Environmental: Water Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography Mathematics: Modeling
Published

A better way to study ocean currents      (via sciencedaily.com)     Original source 

Computer scientists and oceanographers developed a machine-learning model that generates more accurate predictions about the velocities of ocean currents. The model could help make more precise weather forecasts or effectively predict how oil will spread after a spill.

Geoscience: Earthquakes Geoscience: Geography Geoscience: Oceanography Paleontology: General
Published

Impact of ancient earthquake revealed      (via sciencedaily.com)     Original source 

By combining the scientific powerhouses of genetics and geology, researchers have identified a new area of coastal uplift, which had been hiding in plain sight.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Radio signal reveals supernova origin      (via sciencedaily.com)     Original source 

Astronomers reveal the origin of a thermonuclear supernova explosion. Strong emission lines of helium and the first detection of such a supernova in radio waves show that the exploding white dwarf star had a helium-rich companion.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

About 13,000 years ago, the water outflow from the Mediterranean to the Atlantic Ocean was twice that of today’s      (via sciencedaily.com)     Original source 

About 13,000 years ago, a climate crisis caused a global drop in temperatures in the northern hemisphere. This episode of intense cold, known as the Younger Dryas, also caused severe aridity across the Mediterranean basin, which had a major impact on terrestrial and marine ecosystems. But what do we know about the impact of this climate change on water circulation in the Mediterranean?

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Astronomers reveal the largest cosmic explosion ever seen      (via sciencedaily.com)     Original source 

Astronomers have uncovered the largest cosmic explosion ever witnessed. The explosion is more than ten times brighter than any known supernova and three times brighter than the brightest tidal disruption event, where a star falls into a supermassive black hole.

Space: Astrophysics Space: Cosmology Space: General
Published

Researchers find new approach to explore earliest universe dynamics with gravitational waves      (via sciencedaily.com)     Original source 

Researchers have discovered a new generic production mechanism of gravitational waves generated by a phenomenon known as oscillons.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Hidden supermassive black holes brought to life by galaxies on collision course      (via sciencedaily.com)     Original source 

Astronomers have found that supermassive black holes obscured by dust are more likely to grow and release tremendous amounts of energy when they are inside galaxies that are expected to collide with a neighbouring galaxy.

Biology: Marine Biology: Zoology Ecology: Endangered Species Ecology: Sea Life Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Geography Geoscience: Oceanography
Published

Global warming puts whales in the Southern Ocean on a diet      (via sciencedaily.com)     Original source 

In the autumn, when right whales swim towards the coasts of South Africa, they ought to be fat and stuffed full. But in recent years, they have become thinner because their food is disappearing with the melting sea ice.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Celestial monsters at the origin of globular clusters      (via sciencedaily.com)     Original source 

Globular clusters are the most massive and oldest star clusters in the Universe. They can contain up to 1 million of them. The chemical composition of these stars, born at the same time, shows anomalies that are not found in any other population of stars. Explaining this specificity is one of the great challenges of astronomy. After having imagined that supermassive stars could be at the origin, a team believes it has discovered the first chemical trace attesting to their presence in globular proto-clusters, born about 440 million years after the Big Bang.

Biology: Biochemistry Biology: General Biology: Marine Biology: Zoology Ecology: Animals Ecology: Endangered Species Ecology: Nature Ecology: Sea Life Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
Published

Hammerhead sharks hold their breath on deep water hunts to stay warm      (via sciencedaily.com)     Original source 

Scalloped hammerhead sharks hold their breath to keep their bodies warm during deep dives into cold water where they hunt prey such as deep sea squids. This discovery provides important new insights into the physiology and ecology of a species that serves as an important link between the deep and shallow water habitats.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Measurement of the Universe's expansion rate weighs in on a longstanding debate in physics and astronomy      (via sciencedaily.com)     Original source 

A team used a first-of-its-kind technique to measure the expansion rate of the Universe, providing insight that could help more accurately determine the Universe's age and help physicists and astronomers better understand the cosmos.

Biology: Marine Biology: Zoology Ecology: Sea Life Environmental: Ecosystems Geoscience: Earth Science Geoscience: Oceanography Paleontology: Fossils Paleontology: General
Published

Earth's first animals had particular taste in real estate      (via sciencedaily.com)     Original source 

Even without body parts that allowed for movement, new research shows -- for the first time -- that some of Earth's earliest animals managed to be picky about where they lived.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Researchers discover a cause of rapid ice melting in Greenland      (via sciencedaily.com)     Original source 

While conducting a study of Petermann Glacier in northwest Greenland, researchers uncovered a previously unseen way in which the ice and ocean interact. The glaciologists said their findings could mean that the climate community has been vastly underestimating the magnitude of future sea level rise caused by polar ice deterioration.

Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Plastic can drift far away from its starting point as it sinks into the sea      (via sciencedaily.com)     Original source 

Discarded or drifting in the ocean, plastic debris can accumulate on the water's surface, forming floating islands of garbage. Although it's harder to spot, researchers suspect a significant amount also sinks. In a new study in ACS' Environmental Science & Technology, one team used computer modeling to study how far bits of lightweight plastic travel when falling into the Mediterranean Sea. Their results suggest these particles can drift farther underwater than previously thought.

Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Geography Geoscience: Oceanography
Published

First observational evidence of beaufort gyre stabilization, which could be precursor to huge freshwater release      (via sciencedaily.com)     Original source 

A new study provides the first observational evidence of the stabilization of the anti-cyclonic Beaufort Gyre, which is the dominant circulation of the Canada Basin and the largest freshwater reservoir in the Arctic Ocean.

Offbeat: General Offbeat: Space Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Neutron star's X-rays reveal 'photon metamorphosis'      (via sciencedaily.com)     Original source 

A 'beautiful effect' predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar -- a neutron star featuring a powerful magnetic field, according to an astrophysicist.