Thẻ: Lost glaciers

Icelandic plaque to commemorate first glacier ‘killed’ by climate change

~ Trần Đình Hoành ~ Bình luận về bài viết này

A grim warning for the future of Iceland’s glaciers.

MIKE COLAGROSSI, bigthink.com

25 July, 2019

  • Icelandic locals and scientists have created a plaque for the melted Okjökull glacier.
  • Due to climate change, the glacier is no more.
  • If this trend persists, by 2200 all of Iceland’s glaciers will have melted.

Loud and roaring glaciers once populated the Icelandic shores. Their reign and permanence stood unquestioned for centuries — millennia. That is, until now. The glacier that was once known as Okjökull, colloquially referred to as “Ok,” saw its last day in the sun sometime in 2014. Tiếp tục đọc “Icelandic plaque to commemorate first glacier ‘killed’ by climate change” →

Climate Change Is Melting ‘The Roof Of The World’

~ Đào Thu Hằng ~ Bình luận về bài viết này
Huffingtonpost

Two “unprecedented” avalanches in once-stable western Tibet highlights the extent of global warming, researchers warn.
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By Dominique Mosbergen
The Tibetan plateau is home to <a href="https://www.theguardian.com/commentisfree/2015/nov/11/tibet-climate-change-paris-talk

GETTY IMAGES
The Tibetan plateau is home to more than 46,000 glaciers. Sometimes referred to as the “Third Pole,” the area has the third largest concentration of ice after the polar regions.

The glaciers of western Tibet have been stable for thousands of years. But climate change is now threatening that status quo.

Two enormous ice avalanches ripped through the area in the summer, forever transforming the landscape. Global warming likely triggered the icefalls, new research suggests.

Once unheard of, such disasters could become more frequent in the region, scientists warn.

On July 17, more than 60 million cubic meters (or 24,000 Olympic swimming pools) of ice and rock broke off without warning from a glacier in Tibet’s Aru Mountains and hurtled down into a valley below. Within minutes, the avalanche had buried an area of almost four square miles in debris up to 100 feet deep. Nine herders were killed, along with hundreds of sheep and yaks.

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Bigger, Faster Avalanches, Triggered by Climate Change

~ Đào Thu Hằng ~ Bình luận về bài viết này

The Newyorktimes

A deadly 2016 glacier collapse in Tibet surpassed scientists’ expectations — until it happened again. They worry it’s only the beginning.

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By KENDRA PIERRE-LOUIS

A satellite image showing the aftermath of two avalanches in western Tibet in 2016, when two glaciers on the Aru range collapsed and spread across five miles. Researchers say this unusual event was due to climate change. 

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When 247 million cubic feet of snow and ice collapsed off a glacier in the dry, mountainous region of western Tibet in 2016, the roiling mass took with it nine human lives and hundreds of animals, spreading more than five miles in three minutes at speeds of nearly 200 miles per hour. The event surprised scientists, who had seen a collapse that big and that fast only once before.

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Venezuela is likely to be the first country to lose all of its glaciers, but unfortunately it will not be the last country.

~ Đào Thu Hằng ~ 2 bình luận

Venezuela is losing its last glacier

Glacierhub.com

Humboldt Glacier, 14 December 2011 (Source: The Photographer/ Creative Commons).

Venezuela used to have five glaciers. Today, only one remains. The last glacier in Venezuela, the Humboldt glacier, is about to disappear. “Reduced to an area of ten football pitches, a tenth of its size 30 years ago, it will be gone within a decade or two,” reports The Economist. Once Venezuela loses the Humbolt, it will become the first country in modern history to have lost all of its glaciers.

The glacier is expected to completely vanish in ten to twenty years, and scientists have expressed the importance of studying the glacier in its last stages. However, the political and economic crisis in Venezuela makes it difficult to study the glacier. In the past, studies have shown how rapid glacier retreat affects the water cycle in glacier-dependent basins, which changes water regulation and availability. Thus, the disappearance of the Humboldt glacier will impact local communities as run-off stability and water supply for agriculture change. Tiếp tục đọc “Venezuela is likely to be the first country to lose all of its glaciers, but unfortunately it will not be the last country.” →