Sentences with phrase «of glacier lake»

The new satellite index provides an additional criterion for assessing risks of glacier lake floods, Mool says.

The team reports that both the number and size of glacier lakes in the study region increased significantly from 1986 to 2014.

Not exact matches

Two mountains, one mountain range, one lake, a small glacier, an arch, a meteorological station and one golf club have been named after Dr. John Oliver La Gorce of Washington, D.C., who is shown here with his famed collection of weapons.

If there are vast, Big Sky - looking valleys, a slew of blue lakes that get bluer the closer they get to their source glaciers, and brown plateaus perfectly suited for a downhill Orc charge pop up, stop.

The changes to our planet as a result of global warming are apparent for all to see: the receding glaciers in temperate climates, the reduction in rainfall and advancing deserts in Africa and the lakes in the Mideast and Asia that are virtually disappearing.

Much of his research career has focused on glaciers and lake ice, work that is highly interdisciplinary in nature, incorporating geology, physics, and meteorology.

They can block rivers, creating lakes that can later unleash floods, and by depleting glacier mass, they can threaten the flow of meltwater that downstream towns and farms may depend on.

The properties of the climate system include not just familiar concepts of averages of temperature, precipitation, and so on but also the state of the ocean and the cryosphere (sea ice, the great ice sheets in Greenland and Antarctica, glaciers, snow, frozen ground, and ice on lakes and rivers).

Jill Mikucki of Dartmouth College in Hanover, New Hampshire, and her team analysed the water seeping out from a sub-glacial lake beneath the Taylor glacier in the McMurdo dry valleys.

Mote was one of 12 lead authors on a chapter of the fifth Intergovernmental Panel on Climate Change report looking at the cryosphere, which is comprised of snow, river and lake ice, sea ice, glaciers, ice sheets and frozen ground.

There are ways to monitor when the dam of a glacial lake might break: Scientists track the lake's depth, the geological composition and geometry of its dam, and other factors, such as melting rate and steepness of adjacent glaciers.

Most of these lakes are in the eastern Himalayas, where glacier lakes are expanding more rapidly than those in other parts of the mountain range mostly due to rising temperatures and decreasing snowfall during the summer monsoon as a result of climate change.

A small glacier lake known as Nagma Pokhari sits nestled in a valley near Mount Everest in Nepal, surrounded by steep walls of sediment that hold the icy waters in place.

As glaciers in most parts of the Himalayas melt, floods caused by the bursting of rapidly expanding glacial lakes pose an increasing risk to mountain communities.

He and colleagues thought that the answer to the floodwater question might also lie in the lakes» moraines — piles of sediments bulldozed by glaciers into high ridges that act as dams.

As the lake beneath the glacier grew, pressure overcame the strength of the ice dam.

In warm summers, relatively more sediment is deposited thanks to more meltwater from the glaciers that create these lakes, and the abundance of algae in the sediment layers reveals the length of growing seasons.

The modern lakes are the remnants of a giant prehistoric lake, known as glacial Lake Peace, which covered much of the area between the retreating glacilake, known as glacial Lake Peace, which covered much of the area between the retreating glaciLake Peace, which covered much of the area between the retreating glaciers.

The ridge acted as a dam, holding back a lake that had formed in front of a nearby glacier.

Ten thousand to 15,000 years ago, glaciers around a mile high covered the present - day location of the Great Lakes.

The Great Lakes were shaped by ice ages that sent glaciers sweeping over much of the northern hemisphere.

Lakes on the McMurdo Peninsula, the largest glacier - free swath of Antarctica, are the best available model for frozen planets.

The ordinary meter - or - two - a-year speed of the glacier's flow increased roughly tenfold as it passed over the lakes.

Also in the mid-1990s, another group of scientists proposed the now widely accepted mechanism for how lakes can form under glaciers: Heat radiating from Earth's interior is trapped under the thick, insulating ice sheet, and pressure from the weight of all the ice above it lowers the melting point of the ice at the bottom.

To track how glaciers grew and shrank over time, the scientists extracted sediment cores from a glacier - fed lake that provided the first continuous observation of glacier change in southeastern Greenland.

To study the advance and retreat of glaciers over nearly 10,000 years, scientists extracted sediment cores from the bottom of glacier - fed Kulusuk Lake in southeast Greenland.

And in the lake bed sediments, the team will search for records of the poorly understood history of the West Antarctic Ice Sheet, potentially revealing how the mighty glacier has waxed and waned over time.

A glaciologist rather than a biologist, he wanted to investigate a question critical to climate change: Do subglacial rivers and lakes lubricate the movement of ice over land — and might they somehow accelerate a glacier's flow into the ocean, triggering rapid sea level rise?

The clues came from DNA in sediment that had become trapped in accretion ice — the lake water that freezes to the bottom of the massive glacier (S. A. Bulat et al..

The IceSat satellite, which Fricker uses to monitor subglacial lakes and which others use to monitor the sagging tops of melting glaciers, can function only 66 days per year due to a technical glitch.

Head to your local science center and check out NASA's new short film showcasing the frozen portions of the earth known as the cryosphere, which includes not only glaciers and permafrost but also frozen lakes and rivers and areas with seasonal snowfall.

Such lakes of water pool at the bottom of an ice sheet or glacier, and were known to be scattered under parts of Antarctica.

Mountains of new ice underneath the ice sheet Researchers have also observed water in lakes underneath glaciers that refreezes into thin layers of ice.

The waters, he eventually realized, could have come from catastrophic drainage of Lake Missoula, an ancient, glacier - dammed lake in western MontLake Missoula, an ancient, glacier - dammed lake in western Montlake in western Montana.

«The novelty of our study lies in the bigger picture — measuring glacier change over all main glaciated ranges in Bolivia — and in the identification of potentially dangerous lakes for the first time,» Cook says.

Hoffmann adds: «A nation - wide risk assessment of potentially dangerous glacial lakes would be of great interest to local communities in glacier watersheds.»

Life requires energy, and if the only sources of energy are ice melt from the glacier above and the minimal energy from the crust necessary to keep the lake liquid, the pace of life in the lake could be slow indeed.

«On top of that, glacier recession is leaving lakes that could burst and wash away villages or infrastructure downstream,» says lead - author Simon Cook, a lecturer at the Manchester Metropolitan University in the UK.

A new study by scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, and the University of California, Irvine, shows that while ice sheets and glaciers continue to melt, changes in weather and climate over the past decade have caused Earth's continents to soak up and store an extra 3.2 trillion tons of water in soils, lakes and underground aquifers, temporarily slowing the rate of sea level rise by about 20 percent.

The heat from those eruptions would have melted massive amounts of ice to form englacial lakes — bodies of water that form within glaciers like liquid bubbles in a half - frozen ice cube.

Heat from a volcano erupting beneath an immense glacier would have created large lakes of liquid water on Mars in the relatively recent past.

Natural ones include intraplate stress changes related to plate tectonics and natural water table or lake level variations caused by changing weather patterns or water drainage patterns over time, or advance or retreat of glaciers.

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Add to your check list of reality the fact that Himalayan glaciers are melting at an alarming rate (see RC threads on tropical glacier melt); enough so that flash flooding, from overflowing glacier - melt lakes, is a serious and life - threatening concern of downstream populations.

Upon arriving, the researchers spotted a lake on top of a glacier a bad sign for the ice.

When glaciers retreated thousands of years ago, they trapped relic salt water in depressions that are now high - salinity lakes such as Ace Lake.

Most of the lakes in Minnesota and Wisconsin were gouged out by glaciers and later filled with glacial meltwaters.

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

100 of these glaciers ended in lakes or in the sea.

Some of the meltwater from the lakes and rivers atop the region's glaciers, which end in large sinkholes called «moulins» and barrel down through the glacier, is being stored and trapped on top of the glacier inside a low - density, porous «rotten ice.»