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Categories: Geoscience: Oceanography, Space: Cosmology

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Geoscience: Environmental Issues Geoscience: Oceanography
Published

Coastal water pollution transfers to the air in sea spray aerosol and reaches people on land      (via sciencedaily.com) 

New research has confirmed that coastal water pollution transfers to the atmosphere in sea spray aerosol, which can reach people beyond just beachgoers, surfers, and swimmers.

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

Ultracool dwarf binary stars break records      (via sciencedaily.com) 

Astrophysicists have discovered the tightest ultracool dwarf binary system ever observed. The two stars are so close that it takes them less than one Earth day to revolve around each other. In other words, each star's 'year' lasts just 17 hours.

Geoscience: Environmental Issues Geoscience: Landslides Geoscience: Oceanography Paleontology: Climate
Published

Reassessment of Storegga event: Second major landslide recognized      (via sciencedaily.com) 

Submarine landslides have a large tsunami potential and occurred on the central Norwegian shelf more frequently in the past than previously thought. Scientists investigate the Nyegga landslide off the coast of Norway. The submarine landslide occurred in the same area as the well-known Storegga event 8,150 years ago. The new findings suggest that approximately one-third of the seafloor material missing -- previously attributed to the Storegga event -- was removed by the Nyegga event 20,000 years ago. This raises questions about the frequency of large submarine landslides and their associated tsunami hazard.

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

AI draws most accurate map of star birthplaces in the Galaxy      (via sciencedaily.com) 

Scientists identified about 140,000 molecular clouds in the Milky Way Galaxy from large-scale data of carbon monoxide molecules, observed in detail by the Nobeyama 45-m radio telescope. Using artificial intelligence, the researchers estimated the distance of each of these molecular clouds to determine their size and mass, successfully mapping the distribution of the molecular clouds in the Galaxy in the most detailed manner to date.

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

Galactic explosion offers astrophysicists new insight into the cosmos      (via sciencedaily.com) 

Using data from the James Webb Space Telescope's first year of interstellar observation, an international team of researchers was able to serendipitously view an exploding supernova in a faraway spiral galaxy.

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

Astronomers discover metal-rich galaxies in early universe      (via sciencedaily.com) 

While analyzing data from the first images of a well-known early galaxy taken by NASA's James Webb Space Telescope (JWST), astronomers discovered a companion galaxy previously hidden behind the light of the foreground galaxy -- one that surprisingly seems to have already hosted multiple generations of stars despite its young age, estimated at 1.4 billion years old.

Geoscience: Environmental Issues Geoscience: Geology Geoscience: Oceanography Paleontology: Climate
Published

Climate trends in the west, today and 11,000 years ago      (via sciencedaily.com) 

What we think of as the classic West Coast climate began just about 4,000 years ago, finds a study on climate trends of the Holocene era.

Geoscience: Geology Geoscience: Oceanography
Published

Mysteries of the Earth: Researchers predict how fast ancient magma ocean solidified      (via sciencedaily.com) 

Previous research estimated that it took hundreds of million years for the ancient Earth's magma ocean to solidify, but new research narrows these large uncertainties down to less than just a couple of million years.

Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography
Published

Satellites observe speed-up of Glaciers on the Antarctic Peninsula      (via sciencedaily.com) 

Glaciers -- giant blocks of moving ice -- along Antarctica's coastline are flowing faster in the summer because of a combination of melting snow and warmer ocean waters, say researchers. On average, the glaciers travel at around one kilometre a year. But a new study has found a seasonal variation to the speed of the ice flow, which speeded up by up to 22 % in summer when temperatures are warmer. This gives an insight into the way climate change could affect the behaviour of glaciers and the role they could play in raising sea levels.

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

New discovery sheds light on very early supermassive black holes      (via sciencedaily.com) 

Astronomers have discovered a rapidly growing black hole in one of the most extreme galaxies known in the very early Universe. The discovery of the galaxy and the black hole at its center provides new clues on the formation of the very first supermassive black holes.

Biology: Marine Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Sea Life Environmental: Biodiversity Environmental: Ecosystems Geoscience: Oceanography
Published

Marine heatwaves decimate sea urchins, molluscs and more at Rottnest      (via sciencedaily.com) 

Researchers believe rising sea temperatures are to blame for the plummeting number of invertebrates such as molluscs and sea urchins at Rottnest Island off Western Australia, with some species having declined by up to 90 per cent between 2007 and 2021.

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

Discovery of massive early galaxies defies prior understanding of the universe      (via sciencedaily.com) 

Six massive galaxies discovered in the early universe are upending what scientists previously understood about the origins of galaxies in the universe.

Biology: Marine Ecology: Endangered Species Ecology: Extinction Ecology: Invasive Species Ecology: Sea Life Environmental: Ecosystems Geoscience: Oceanography
Published

Sea stars able to consume kelp-eating urchins fast enough to protect kelp forests, research shows      (via sciencedaily.com) 

Researchers have provided the first experimental evidence that a species of endangered sea star protects kelp forests along North America's Pacific Coast by preying on substantial numbers of kelp-eating urchins.

Biology: Marine Ecology: Endangered Species Ecology: Sea Life Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography
Published

As sea ice declines in the Arctic, bowhead whales are adjusting their migration patterns      (via sciencedaily.com) 

As sea ice declines in the Arctic, bowhead whales are staying north of the Bering Strait more frequently, a shift that could affect the long-term health of the bowhead population and impact the Indigenous communities that rely on the whales, a new study shows.

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

James Webb spots super old, massive galaxies that shouldn't exist      (via sciencedaily.com) 

A team of international researchers have identified six candidate galaxies that existed roughly 500 to 700 million years after the Big Bang and are about as big as the modern Milky Way Galaxy -- a feat that scientists didn't think was possible.

Geoscience: Environmental Issues Geoscience: Oceanography Geoscience: Severe Weather Paleontology: Climate
Published

New knowledge about ice sheet movement can shed light on when sea levels will rise      (via sciencedaily.com) 

The trawling of thousands of satellite measurements using artificial intelligence has shown researchers that meltwater in tunnels beneath Greenland's ice sheet causes it to change speed, and in some places, accelerate greatly towards the ocean. This can increase melting, especially in a warming climate, which is why the study's researchers think that it is important to keep an eye on.

Biology: Marine Ecology: Animals Ecology: Endangered Species Ecology: Invasive Species Ecology: Sea Life Environmental: Ecosystems Geoscience: Oceanography
Published

Food quality matters for southern resident killer whales      (via sciencedaily.com) 

Not all Chinook salmon are created equal, and this has a major impact on the energetics for southern resident killer whales. A recent study quantified the lipid content in Fraser River Chinook salmon -- the southern resident's preferred meal -- and found that spring-run Chinook salmon, the earliest to arrive to the Salish Sea are lipid-rich and energy dense; a critical factor for the killer whales who prey on them. Fraser River Chinook salmon that come later in the season have lower energy density.

Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography Geoscience: Severe Weather
Published

Feedback loops make climate action even more urgent, scientists say      (via sciencedaily.com) 

Researchers have identified 26 global warming accelerators known as amplifying feedback loops that the researchers say aren't being properly included in climate models. They note that the findings add urgency to the need to respond to the climate crisis and provide a roadmap for policymakers aiming to avert the most severe consequences of a warming planet.