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Latest Glacial landforms Stories

Warm Water Causes Arctic Glaciers To Sizzle As They Melt
2013-11-28 06:11:28

[ Watch the Video: Melting Glacial Ice Has Its Own Sound ] April Flowers for redOrbit.com - Your Universe Online One of the most prominent sounds of a warming planet has been recorded and identified by scientists at the University of Alaska: the sizzle of glacial ice as it melts into the sea. Trapped air bubbles squirting out of the disappearing ice causes a noise that might provide clues to the rate of glacier melt and help researchers better monitor the fast-changing polar...

Glacial Melt Minimal Effect On Sea Level
2013-08-13 09:47:09

Brett Smith for redOrbit.com - Your Universe Online Occasionally, melt water on top of a glacier will trickle down to the bedrock below and act as a lubricant for the glacier’s movements. Once thought to be a major contributor to sea-level rise, melt water was found to have only a minor effect on sea level in a new study from a team of European and American scientists. Using computer modeling based on observations of Greenland’s ice sheet, the research team concluded glacier...

Understanding The Mechanisms Of Supraglacial Lake Drainage
2013-07-17 11:03:06

Brett Smith for redOrbit.com - Your Universe Online Lakes often form on top of a glacier and drain onto the bedrock below, lubricating a glacier's movements as a result. A new study from an international group of researchers has found that the way these lakes drain can affect the velocity, extent and direction of a glacier's progress. Previous research has focused on the lubrication action of supraglacial lakes after they drain, but not on the draining mechanism itself. According to the...

Swamp-Like Water System Revealed Under Antarctica's Thwaites Glacier
2013-07-09 14:43:50

Lee Rannals for redOrbit.com - Your Universe Online While using an innovative radar analysis method to accurately image the sub-glacial water system under West Antarctica's Thwaites Galcier, scientists discovered a swamp-like canal system beneath the ice. The scientists, from The University of Texas at Austin's Institute for Geophysics, reported in the Proceedings of the National Academy of Sciences (PNAS) that the swamp-like canal is several times as large as Florida's Everglades....

Significant Iron Contributed To North Atlantic Ocean By Glaciers
2013-03-11 12:23:52

Woods Hole Oceanographic Institution All living organisms rely on iron as an essential nutrient. In the ocean, iron´s abundance or scarcity means all the difference as it fuels the growth of plankton, the base of the ocean´s food web. A new study by biogeochemists and glaciologists at Woods Hole Oceanographic Institution (WHOI) identifies an unexpectedly large source of iron to the North Atlantic — meltwater from glaciers and ice sheets, which may stimulate plankton...

The Forming Of Antarctica's Hidden Fjords
2013-03-06 13:41:41

University of Arizona Antarctica's topography began changing from flat to fjord-filled starting about 34 million years ago, according to a new report from a University of Arizona-led team of geoscientists. Knowing when Antarctica's topography started shifting from a flat landscape to one with glaciers, fjords and mountains is important for modeling how the Antarctic ice sheet affects global climate and sea-level rise. Although radar surveys have revealed a rugged alpine landscape...

Youth Therapy For Scandinavia's Glaciers And Landscape
2012-09-24 11:45:58

The high elevation flat surfaces characteristic of the Norwegian landscape are in geologically terms young, according to a paper in Nature Geoscience. In a paper recently published in Nature Geoscience, researchers from the University of Bergen (UiB) and ETH Zurich have demonstrated that ice sheets have extensively shaped the fjords of Norway for the last 2.8 million years. — However, the massive sediment record deposited offshore Norway during this period tells us a more complex...

French Alps Glaciers Have Decreased 26% In 40 Years
2011-12-08 06:18:02

A new study has found that the glaciers in the French Alps have lost a quarter of their area in the past 40 years. Marie Gardent, from the University of Savoie, and colleagues assessed about 600 glaciers in broad areas incorporating the Ecrins, Belledonne, Vanoise, Ubaye and Grande Rousse Arves massifs. The team used map archives, past satellite imagery and aerial photographs to assess the areas.  Manual inspection was used to ensure that the automatic delineation methods used in...

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2011-01-27 09:26:45

Hotter summers may not be as catastrophic for the Greenland ice sheet as previously feared and may actually slow down the flow of glaciers, according to new research. A letter published in Nature on 27 January explains how increased melting in warmer years causes the internal drainage system of the ice sheet to 'adapt' and accommodate more melt-water, without speeding up the flow of ice toward the oceans. The findings have important implications for future assessments of global sea level...

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2011-01-25 10:25:00

A blanket of dust and rock debris is apparently shielding some glaciers in the world's highest mountain range from thawing, and varying wind patterns might explain why some are defying a melt. "Our study shows there is no uniform response of Himalayan glaciers to climate change and highlights the importance of debris cover," scientists at universities in Germany and the United States wrote in the study of 286 glaciers. Elsewhere in the Himalayas "more than 65 percent of the monsoon-influenced...


Latest Glacial landforms Reference Libraries

Meltwater
2009-07-06 17:15:30

Meltwater is water that is released from melting snow or ice. This includes meltwater from glacial ice and ice shelves over oceans. Meltwater is often produced during volcanic eruptions, and can cause dangerous lahars (landslides of wet volcanic debris). When meltwater pools on the surface rather than draining or flowing away, it forms pools known as melt ponds. Meltwater will often refreeze as the temperature drops. Meltwater can also collect or melt under the ice's surface. Sub-glacial...

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