Archive for Greenland

Giant Antarctic Pine Island Glacier melting beyond point of no return

Posted in 2014 with tags , , , , , , , , , on January 15, 2014 by MARIE EMMANUELLE QUILICHINI

Antarctica’s Pine Island Glacier, one of the biggest single contributors to world sea-level rise, is melting irreversibly and could add as much as a centimetre to ocean levels in 20 years, according to a study. The glacier “has started a phase of self-sustained retreat and will irreversibly continue its decline”, said Gael Durand, a glaciologist with France’s Grenoble Alps University. Durand and an international team used three different models to forecast the glacier’s future based on the “grounding line”, which is the area under water where the ice shelf – a sea-floating extension of the continent-covering ice sheet – meets land.

This line has receded by about 10 kilometres in the past decade. The grounding line “is probably engaged in an unstable 40km retreat,” said the study, published in the journal Nature Climate Change. A massive river of ice, the glacier by itself is responsible for 20 per cent of total ice loss from the West Antarctic Ice Sheet today. On average, it shed 20 billion tonnes of ice annually from 1992-2011, a loss that is likely to increase up to and above 100 billion tonnes each year, said the study. This is equivalent to 3.5-10 millimetres of global average sea-level rise over the next 20 years.

The global mean sea level rose by 3.2mm in 2010 – itself a near-doubling from the rate of two decades earlier. The European Space Agency said last month that the West Antarctic ice sheet was shedding ice at a much faster rate than before – currently about 150 cubic kilometres a year. Climate scientists are keeping a worried eye on the mighty ice sheets of Greenland and Antarctica, as continued losses could threaten vulnerable coastal cities with dangerously high sea levels. Last year, the United Nations’ climate science body, the Intergovernmental Panel on Climate Change (IPCC) projected sea levels would rise between 26 and 82 centimetres by 2100.

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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.

Animal Planet’s Mermaids The New Evidence 2013

Posted in 2013 with tags , , , , , , on October 25, 2013 by MARIE EMMANUELLE QUILICHINI

Mermaids: The New Evidence,” Animal Planet revisited its documentary about the existence of mermaids from last year, “Mermaids: The Body Found.” Biologist Dr. Paul Robertson returned with what appeared to be brand new footage of the alleged mythical creatures, allegedly taken this spring in the Greenland Sea.

Mermaid by Me

Mermaid by Me (Photo credit: Vintage Moonchild)

 

“CHASING ICE” captures largest glacier calving ever filmed

Posted in 2013 with tags , , , , , , , , , on October 6, 2013 by MARIE EMMANUELLE QUILICHINI

On May 28, 2008, Adam LeWinter and Director Jeff Orlowski filmed a historic breakup at the Ilulissat Glacier in Western Greenland. The calving event lasted for 75 minutes and the glacier retreated a full mile across a calving face three miles wide. The height of the ice is about 3,000 feet, 300-400 feet above water and the rest below water.

Chasing Ice won the award for Excellence in Cinematography at the 2012 Sundance Film Festival and the Best Documentary from the International Press Association. It has won over 30 awards at festivals worldwide. Still playing in theaters nationwide.

Part of the 100 meter wall of the Spegazzini g...

Part of the 100 meter wall of the Spegazzini glacier falling (Photo credit: Wikipedia)

Icebergs are breaking off glaciers at Cape Yor...

Icebergs are breaking off glaciers at Cape York,Greenland. The picture was taken from a helicopter. (Photo credit: Wikipedia)

 

 

 

Aerial view of inner (eastern) Inussulik Bay, ...

Aerial view of inner (eastern) Inussulik Bay, Upernavik Archipelago, Greenland. Photographed from the Air Greenland Bell 212 during the Kullorsuaq-Nuussuaq flight. Illullip Sermia, the glacier tongue of ice with which Greenland Icesheet falls into the ocean; calving icebergs. (Photo credit: Wikipedia)

Climate Change Could Turn Greenland, Well, Green

Posted in 2013 with tags , , , , , , , , , , , on September 1, 2013 by MARIE EMMANUELLE QUILICHINI

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From Mother Nature Network’s Russell McLendon:

Greenland is famously misnamed. Not only do its few native trees rarely form forests, but most of the island is covered by the only modern ice sheet outside Antarctica. According to Viking legend, Erik the Red dubbed it “Greenland” more than 1,000 years ago, hoping the pleasant name would lure settlers to join him there after he was exiled from Iceland.

But now, thanks to high-speed climate change, Erik’s ruse is finally poised to come true. Scientists have long expected rising temperatures to make Greenland greener, but a new study examines how that will likely happen — and how such a transformation could affect the 535 million-acre island, its inhabitants and even climate change itself.

Only four species of trees or large bushes are native to Greenland, forming scattered pockets of greenery along its southern, ice-free edges. And while these won’t explode into far-ranging forests overnight, their stock is soaring as the Arctic warms. On top of that, exotic trees from historically warmer climates are expected to move in, especially if humans capitalize on the new climate by importing foreign plants.

TO BE CONTINUED ON

http://www.huffingtonpost.com/2013/08/31/climate-change-greenland_n_3844392.html?utm_hp_ref=climate-change

‘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]

Heat flow from Earth’s mantle contributes to Greenland ice melting

Posted in 2013 with tags , , , , on August 13, 2013 by MARIE EMMANUELLE QUILICHINI

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http://phys.org/news/2013-08-earth-mantle-contributes-greenland-ice.html#jCp

EXCERPT

Modeled basal ice temperatures of the present-day Greenland Ice Shield across the Summit region, GRIP and GISP2 indicate borehole locations. Credit: A. Petrunin/GFZ

The Greenland ice sheet is melting from below, caused by a high heat flow from the mantle into the lithosphere. This influence is very variable spatially and has its origin in an exceptionally thin lithosphere. Consequently, there is an increased heat flow from the mantle and a complex interplay between this geothermal heating and the Greenland ice sheet. The international research initiative IceGeoHeat led by the GFZ German Research Centre for Geosciences establishes in the current online issue of Nature Geoscience (Vol 6, August 11, 2013) that this effect cannot be neglected when modeling the ice sheet as part of a climate study.

Read more at: http://phys.org/news/2013-08-earth-mantle-contributes-greenland-ice.html#jCp

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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