Archive for Ice Sheet

NASA photo reveals a startling 300-foot-wide rift in Antarctic Ice Shelf

Posted in 2016 with tags , , , on December 5, 2016 by MARIE EMMANUELLE QUILICHINI

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Rift in the Larsen C Ice Shelf as seen from a NASA aircraft on Nov. 10, 2016.

IMAGE: NASA/JOHN SONNTAG
The breakup of the massive Larsen C Ice Shelf in Antarctica is getting closer and will eventually produce an iceberg the size of Delaware prowling the Southern Ocean, according to new NASA data.
On Friday, NASA released an astonishing new image taken by researchers flying above the ice shelf on Nov. 10 showing the crack is getting longer, deeper and wider. Scientists think it will eventually cause a large section of the shelf to break off.
TO BE CONTINUED ON

Cosmic Journeys : Earth in 1000 Years

Posted in 2013 with tags , , , , , , , , , , , , , , on November 22, 2013 by MARIE EMMANUELLE QUILICHINI

This edition of COSMIC JOURNEYS explores the still unfolding story of Earth’s past and the light it sheds on the science of climate change today. While that story can tell us about the mechanisms that can shape our climate. it’s still the unique conditions of our time that will determine sea levels, ice coverage, and temperatures.

Ice, in its varied forms, covers as much as 16% of Earth’s surface, including 33% of land areas at the height of the northern winter. Glaciers, sea ice, permafrost, ice sheets and snow play an important role in Earth’s climate. They reflect energy back to space, shape ocean currents, and spawn weather patterns.

But there are signs that Earth’s great stores of ice are beginning to melt. To find out where Earth might be headed, scientists are drilling down into the ice, and scouring ancient sea beds, for evidence of past climate change. What are they learning about the fate of our planet… a thousand years into the future and even beyond?

AN OVERVIEW OF THE DAMAGE CAUSED BY RISING WATER AROUND THE WORLD

Posted in 2013 with tags , , , , , , , , , , , on November 9, 2013 by MARIE EMMANUELLE QUILICHINI

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One house remains above water level

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An orange line painted on the condemned house – and Robb Braidwood, Office of Emergency Management Chesapeake, Virginia – shows the usual high water in the area.” A storm is not even necessary , says Braidwood. Heavy rains and winds in the wrong direction at a high enough tide. “

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As seawater warms, it expands. This thermal expansion accounts for about a third of the current rise in sea level. The melting of mountain glaciers account for another third.By 2100, it will no doubt raises several centimeters sea level, but no more. The volume of ice mountains remains small enough.

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Its contribution is small today but worrying sign, its surface began to melt in the summer. The ice sheet contains enough water to raise sea levels by almost 7.5 m.

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The East Antarctica seems fairly stable. However, the warming of the ocean mine parts of the ice sheet of West Antarctica. The future of the cap, such as Greenland, is very uncertain.

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A coastal defense work today protects Malé, the capital of Maldives. This archipelago in the Indian Ocean is the lowest country in the world and flat. Rising seas could force Maldivians to abandon their homeland before 2100. More than 100 000 people live on this island of 1.9 km2.

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Dangerously exposed to the next typhoon, these families homeless crowd into coastal slums in Manila, Philippines. Rapid land subsidence worse by the global sea level rise.

‘Grand Canyon’ of Greenland Discovered Under Ice Sheet

Posted in 2013 with tags , , , , , , , on August 30, 2013 by MARIE EMMANUELLE QUILICHINI

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http://www.livescience.com/39289-greenland-longest-canyon-discovered.html

The age of discovery isn’t over yet. A colossal canyon, the longest on Earth, has just been found under Greenland‘s ice sheet, scientists announced today (Aug. 29) in the journal Science.

“You think that everything that could be known about the land surface is known, but it’s not,” said Jonathan Bamber, lead study author and a geographer at the University of Bristol in the United Kingdom. “There’s still so much to learn about the planet.”

The great gorge meanders northward from Summit, the highest point in central Greenland, toward Petermann Glacier on the northwest coast, covering more than 460 miles (750 kilometers). Researchers think the ravine could be even longer, but they don’t yet have the data to prove where the canyon peters out deep under the interior ice sheet. “It may actually go farther south,” Bamber told LiveScience‘s OurAmazingPlanet.

[See Photos of Mega-Canyon Under Greenland Ice Sheet]

NASA Finds Polar Ice Adding More to Rising Seas

Posted in Uncategorized with tags , , , , , , , , , on March 10, 2011 by MARIE EMMANUELLE QUILICHINI

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