Roundup: Chinese Glaciers Shrink, Glacial Buzzsaws, Mars’ Grand Canyon

Posted by on Dec 22, 2014

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Everest, whose summit marks the border between China and Nepal © Joe Hastings

Everest, whose summit marks the border between China and Nepal © Joe Hastings

China’s glaciers shrink by a fifth since the 1950s

“China’s glaciers have retreated by 18 per cent over the past half century, a comprehensive survey has found, as some experts warn of “chain effects” that could have an impact on water supplies in the country’s western regions.”

 Read more at South China Morning Post

Glacial buzz saw takes mountains out at the knees

“Gran Mitchell says cirques may act as a ‘glacial linebacker’ that takes mountains out at the knees. The glacier scours the floors of the cirque and eats away at the walls, steepening the slopes above and making them weak and prone to erosion.”

Read more at New Scientist (subscription required)

Glaciers on Mars Likely Helped Carve Red Planet’s ‘Grand Canyon’

Signs of acid-rock interactions in Valles Marineris, the Grand Canyon of Mars, suggest that glaciers in the planet’s past may have been responsible for carving at least some of the extensive network when the planet was more severely tipped.”

Read more at Space.com

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