Science Daily

Subscribe to Science Daily feed Science Daily
Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.
Updated: 2 hours 5 min ago

Robot provides unprecedented views below Antarctic ice shelf

Thu, 03/02/2023 - 10:42
With the help of an underwater robot, known as Icefin, a U.S.- New Zealand research team has obtained an unprecedented look inside a crevasse at Kamb Ice Stream -- revealing more than a century of geological processes beneath the Antarctic ice.

Wisconsin cave holds tantalizing clues to ancient climate changes, future shifts

Thu, 03/02/2023 - 10:38
A newly published study of a stalagmite found in Cave of the Mounds reveals previously undetected history of the local climate going back thousands of years. Researchers describe evidence for an ice age punctuated by massive and abrupt warming events across much of the Northern Hemisphere.

Reassessment of Storegga event: Second major landslide recognized

Wed, 03/01/2023 - 11:07
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.

Climate trends in the west, today and 11,000 years ago

Mon, 02/27/2023 - 15:14
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.

Human-wildlife conflicts rising worldwide with climate change

Mon, 02/27/2023 - 12:26
Scientists reveal that a warming world is increasing human-wildlife conflicts globally. They show that climate shifts can drive conflicts by altering animal habitats, the timing of events, wildlife behaviors and resource availability. It also showed that people are changing their behaviors and locations in response to climate change in ways that increase conflicts.

Satellites observe speed-up of Glaciers on the Antarctic Peninsula

Mon, 02/27/2023 - 12:24
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.

Clues about the Northeast's past and future climate from plant fossils

Fri, 02/24/2023 - 15:51
A team of researchers is working to understand the details of the climate for the eastern portion of the United States from the Miocene, which unfortunately is a blank spot on paleo-climate maps. New findings suggest the future climate will be very close to the warmer, wetter, and more homogeneous climate similar to conditions experienced 5 million years ago.

A labyrinth lake provides surprising benefits for an endangered seal

Thu, 02/23/2023 - 12:29
The endangered Saimaa ringed seal is an Ice Age relict living in the highly labyrinthine Lake Saimaa, Finland. The newly published work shows that although individual seals have greatly reduced genetic variation, the loss of variation has been complementary, preserving the adaptive potential of the whole population.

Early Cretaceous shift in the global carbon cycle affected both land and sea

Wed, 02/22/2023 - 13:11
Geologists doing fieldwork in southeastern Utah's Cedar Mountain Formation found carbon isotope evidence that the site, though on land, experienced the same early Cretaceous carbon-cycle change recorded in marine sedimentary rocks in Europe. This ancient carbon-cycle phenomenon, known as the 'Weissert Event' was driven by large, sustained volcanic eruptions in the Southern Hemisphere that greatly increased carbon dioxide levels in the atmosphere and produced significant greenhouse climate effects over a prolonged time.

As sea ice declines in the Arctic, bowhead whales are adjusting their migration patterns

Wed, 02/22/2023 - 13:11
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.

Sinking tundra surface unlikely to trigger runaway permafrost thaw

Tue, 02/21/2023 - 17:01
Scientists set out to address one of the biggest uncertainties about how carbon-rich permafrost will respond to gradual sinking of the land surface as temperatures rise. Using a high-performance computer simulation, the research team found that soil subsidence is unlikely to cause rampant thawing in the future.

New knowledge about ice sheet movement can shed light on when sea levels will rise

Tue, 02/21/2023 - 10:30
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.

Micro- and nanoplastic from the atmosphere is polluting the ocean

Tue, 05/10/2022 - 09:29
According to estimates, by 2040 the level of plastic pollution could reach 80 million metric tons per year. Plastic particles have now been detected in virtually all spheres of the environment, e.g. in water bodies, the soil and the air. Via ocean currents and rivers, the tiny plastic particles can even reach the Arctic, Antarctic or ocean depths. A new overview study has now shown that wind, too, can transport these particles great distances -- and much faster than water can: in the atmosphere, they can travel from their point of origin to the most remote corners of the planet in a matter of days.

More difficult than expected for glaciers to recover from climate warming

Mon, 05/09/2022 - 15:28
Ice shelves are floating extensions of glaciers. If Greenland's second largest ice shelf breaks up, it may not recover unless Earth's future climate cools considerably.

Newly discovered lake may hold secret to Antarctic ice sheet's rise and fall

Mon, 05/09/2022 - 15:28
Scientists investigating the underside of the world's largest ice sheet in East Antarctica have discovered a city-size lake whose sediments might answer questions about what Antarctica was like before it froze, how climate change has affected it over its history, and how the ice sheet might behave as the world warms.

Ice-capped volcanoes slower to erupt, study finds

Mon, 05/09/2022 - 15:24
The Westdahl Peak volcano in Alaska last erupted in 1992, and continued expansion hints at another eruption soon. Experts previously forecasted the next blast to occur by 2010, but the volcano -- located under about 1 kilometer of glacial ice -- has yet to erupt again. Using the Westdahl Peak volcano as inspiration, a new volcanic modeling study examined how glaciers affect the stability and short-term eruption cycles of high-latitude volcanic systems -- some of which exist along major air transportation routes.

In sediments below Antarctic ice, scientists discover a giant groundwater system

Thu, 05/05/2022 - 13:32
A team has mapped a huge, actively circulating groundwater system in deep sediments in West Antarctica. They say such systems, probably common in Antarctica, may have as-yet unknown implications for how the frozen continent reacts to, or possibly even contributes to, climate change.

Landslides can have a major impact on glacier melt and movement

Wed, 05/04/2022 - 08:29
Using satellite imagery to study the effects of a 2019 landslide on the Amalia Glacier in Patagonia, a research team found the landslide helped stabilize the glacier and caused it to grow by about 1,000 meters over the last three years.

Precipitation helped drive distribution of Alaska dinosaurs

Mon, 05/02/2022 - 16:09
Precipitation more than temperature influenced the distribution of herbivorous dinosaurs in what is now Alaska, according to new research. The finding discusses the distribution of hadrosaurids and ceratopsids -- the megaherbivores of the Late Cretaceous Period, 100.5 million to 66 million years ago.

Carbon, climate change and ocean anoxia in an ancient icehouse world

Mon, 05/02/2022 - 16:08
A new study describes a period of rapid global climate change in an ice-capped world much like the present -- but 304 million years ago. Within about 300,000 years, atmospheric carbon dioxide levels doubled, oceans became anoxic, and biodiversity dropped on land and at sea.