News About Ice Ages
February 12, 2017
Hidden lakes drain below West Antarctica's Thwaites Glacier
Seattle WA (SPX) Feb 10, 2017
Thwaites Glacier on the edge of West Antarctica is one of the planet's fastest-moving glaciers. Research shows that it is sliding unstoppably into the ocean, mainly due to warmer seawater lapping at its underside. But the details of its collapse remain uncertain. The details are necessary to provide a timeline for when to expect 2 feet of global sea level rise, and when this glacier's loss will help destabilize the much larger West Antarctic Ice Sheet. Recent efforts have used satellites to map th ... read more

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Coal mine dust lowers spectral reflectance of Arctic snow by up to 84 percent
Dust released by an active coal mine in Svalbard, Norway, reduced the spectral reflectance of nearby snow and ice by up to 84 percent, according to new University of Colorado Boulder-led research. ... more
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The making of Antarctica
One of the big mysteries in the scientific world is how the ice sheets of Antarctica formed so rapidly about 34 million years ago, at the boundary between the Eocene and Oligocene epochs. The first ... more
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Scientists unravel the process of meltwater in ocean depths
An international team of researchers has discovered why fresh water, melted from Antarctic ice sheets, is often detected below the surface of the ocean, rather than rising to the top above denser se ... more
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Coal mine dust accelerates snow melt in the Arctic
According to a new study, dust expelled by a coal mine in Svalbard, Norway, encourages snow and ice melt in the Arctic. The spectral reflectance of nearby snow was reduced 84 percent by the presence of dust. ... more
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Earth's orbital variations and sea ice synch glacial periods
Earth is currently in what climatologists call an interglacial period, a warm pulse between long, cold ice ages when glaciers dominate our planet's higher latitudes. For the past million years, thes ... more
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Antarctic bottom waters freshening at unexpected rate
In the cold depths along the sea floor, Antarctic Bottom Waters are part of a global circulatory system, supplying oxygen-, carbon- and nutrient-rich waters to the world's oceans. Over the last deca ... more
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Arctic melt ponds form when meltwater clogs ice pores
When spring comes to the Arctic, the breakup of the cold winter ice sheets starts at the surface with the formation of melt ponds. These pools of melted snow and ice darken the surface of the ice, i ... more
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Sea-surface temps during last interglacial period like modern temps
Sea-surface temperatures during the last interglaciation period were like those of today, a new study reports. The trend is worrisome, as sea levels during the last interglacial period were be ... more
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UCI researchers map oceanic troughs below ice sheets in West Antarctica
University of California, Irvine glaciologists have uncovered large oceanic valleys beneath some of the massive glaciers flowing into the Amundsen Sea in West Antarctica. Carved by earlier advances ... more
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Changing atmospheric conditions may contribute to stronger ocean waves in Antarctica
Over the past few years, a large fracture has grown across a large floating ice shelf on the Antarctic Peninsula. The world is watching the ice shelf, now poised to break off an iceberg the size of ... more
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Deep seafloor valleys found beneath West Antarctic glaciers
New analysis of gravity data, along with bed topography and ice thickness observations, has revealed the presence of large seafloor valleys hiding beneath the glaciers of West Antarctica. ... more
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Massive Antarctic ice shelf ready to break apart
A chunk of ice half the size of Jamaica which is breaking away from West Antarctica is now attached to its parent ice shelf just by a thread, scientists reported Friday. ... more
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ACE ship completes first leg of journey around Antarctica
The Akademik Treshnikov, a Russian research vessel, docked in Hobart, Australia, this week after 30 days at sea. The arrival at port marked the completion of Antarctic Circumnavigation Expedition, a scientific expedition organized by the Swiss Polar Institute. ... more
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Tracking Antarctic adaptations in diatoms
Diatoms are a common type of photosynthetic microorganism, found in many environments from marine to soil; in the oceans, they are responsible for more than a third of the global ocean carbon captur ... more
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Inception of the last ice age
The Eurasian ice sheet was the third largest ice mass during the Last Glacial Maximum some 22,000 years ago. Alongside the Antarctic and North American ice sheets it lowered the global sea level by ... more
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Ice cracks force shutdown of UK Antarctic station
A British research station on an ice shelf in Antarctica is being relocated and shut down over the winter because of fears it could float off on an iceberg, the British Antarctic Survey said on Monday. ... more
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Arctic shrews, parasites indicate climate change effect on ecosystems
The shrew and its parasites - even 40-year-old preserved ones - are the new indicators of environmental change, according to a Kansas State University researcher. Andrew Hope, Kansas State Uni ... more
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Climate change shows in shrinking Antarctic snows
Vast icy rock peaks tower above Argentina's Carlini research base in Antarctica. But scientists who have worked here for decades say the glaciers are less icy than they once were. ... more
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Airborne thermometer to measure Arctic temperatures
Russian scientists from the National University of Science and Technology MISiS, MIPT, and Prokhorov General Physics Institute (GPI) of the Russian Academy of Sciences have compared the effectivenes ... more
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Radar reveals meltwater's year-round life under Greenland ice
When summer temperatures rise in Greenland and the melt season begins, water pools on the surface, and sometimes disappears down holes in the ice. That water may eventually reach bedrock, creating a ... more
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French satellite spots Antarctic caravan
There's no priority mail in Antarctica. Supplies must be delivered the old fashioned way, by caravan. Instead of horses and wagons, however, the supplies are loaded atop skis and pulled by a tractor across the snow and ice. ... more
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High-tech mooring will measure beneath Antarctic ice
Earth's oceans have soaked up about a third of the carbon dioxide added to the atmosphere by humans through use of fossil fuels and other activities. That's good news for those concerned with greenh ... more
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When the Arctic coast retreats, life in the shallow water areas drastically changes
The thawing and erosion of Arctic permafrost coasts has dramatically increased in the past years and the sea is now consuming more than 20 metres of land per year at some locations. The earth masses ... more
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Unlucky polar bears beset by toxins too
Polar bears just can't catch a break. ... more
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