Rift in the Larsen C Ice Shelf as seen from a NASA aircraft on Nov. 10, 2016.
Archive for Ice Sheet
NASA photo reveals a startling 300-foot-wide rift in Antarctic Ice Shelf
Posted in 2016 with tags Ice melting, Ice Sheet, NASA, NASA photo reveals a startling 300-foot-wide rift in Antarctic Ice Shelf on December 5, 2016 by MARIE EMMANUELLE QUILICHINICosmic Journeys : Earth in 1000 Years
Posted in 2013 with tags Climate, Cold, COSMIC JOURNEYS, Cosmic Journeys : Earth in 1000 Years, Earth, earth climate, Environment, Ice, Ice Sheet, ice sheets, Ocean Currents, Sea, Sea Ice, Sea level, weather patterns on November 22, 2013 by MARIE EMMANUELLE QUILICHINIThis 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 Current sea level rise, East Antarctica, Greenland, Hurricane Sandy, Ice Sheet, Indian Ocean, Intergovernmental Panel on Climate Change, Malé, Maldives, Manila, Sea level, West Antarctica on November 9, 2013 by MARIE EMMANUELLE QUILICHINI
One house remains above water level
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. “
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.
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.
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.
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.
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 Bristol University, Earth, Grand Canyon, Greenland, Greenland ice sheet, Ice Sheet, LiveScience, Petermann Glacier on August 30, 2013 by MARIE EMMANUELLE QUILICHINIhttp://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]
Related articles
- ‘Grand Canyon of Greenland’ discovered under ice sheet (nbcnews.com)
- Vast 466-mile-long canyon discovered under Greenland ice sheet (independent.co.uk)
- Giant Canyon Discovered Under Greenland’s Ice Sheet (news.softpedia.com)
- ‘Grand Canyon’ of Greenland Discovered Under Ice Sheet (livescience.com)
- Huge canyon under Greenland ice (bbc.co.uk)
- LOOK: Massive Canyon Discovered Under Greenland Ice Sheet (huffingtonpost.com)
- Another Grand Canyon Discovered Beneath Greenland’s Ice (npr.org)
- NASA data reveals mega-canyon under Greenland ice sheet (sciencedaily.com)
- NASA data reveals mega-canyon under Greenland Ice Sheet (esciencenews.com)