Mega-Canyon Discovered Beneath Greenland’s Ice Sheet

3-D view of the subglacial canyon, looking northwest from central Greenland.

Researchers have discovered a mega-canyon lurking below Greenland’s giant ice sheet — a snaking canyon at least 450 miles long that’s been a crucial drainage corridor since before ice covered the island more than 3.5 million years ago.

The canyon is up to 2,600 feet (800 meters) deep, and its scale in width and length rivals parts of the Grand Canyon in Arizona. It starts beneath the ice in central Greenland and winds its way north to drain into the Arctic Ocean, according to new research from scientists at the University of Bristol, as well as researchers from Canada and Italy. The finding helps explain why Greenland doesn’t have pools of water under its ice sheet like Antarctica does: The canyon may be helping divert meltwater and thus keeping Greenland’s ice sheet stable.

Read the full story here.

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About jensera

Jennifer Harrington is a Toronto-based illustrator, writer and graphic designer. She illustrated the best-selling children’s book series 'A Moose in a Maple Tree,' which includes the titles 'A Moose in a Maple Tree,' 'The Night Before a Canadian Christmas' and 'Canadian Jingle Bells.' She is also the owner of JSH Graphics, a boutique graphic design agency that specializes in print and web advertising. With her latest project, Eco Books 4 Kids, Jennifer has partnered with illustrator Michael Arnott to create a series of ecologically-themed ebooks for children. Her next book, 'Spirit Bear,' is due for release in the Summer of 2013. Jennifer offers two different school presentations for her 'Moose in a Maple Tree' collection, an illustration demonstration and a Christmas concert series, which can be booked at www.amooseinamapletree.com. She will be taking bookings for school readings of 'Spirit Bear' beginning in October 2013.

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