时间:2025-04-02 09:57:20 来源:网络整理编辑:探索
You might want to move up any plans to visit Glacier National Park in Montana. New data shows that t
You might want to move up any plans to visit Glacier National Park in Montana.
New data shows that the park's namesake rivers of ice are rapidly disappearing due to global warming.
SEE ALSO:Sea level rise could send U.S. 'climate migrants' fleeing to Austin, AtlantaThe warming climate has slashed the size of 39 Montana glaciers since 1966, according to data released by Portland State University and the U.S. Geological Survey (USGS) on May 10. Only 26 glaciers in the park are large enough to still have flowing ice.
The new data includes boundary information for 37 named glaciers within the boundaries of the national park, and two glaciers on U.S. Forest Service land.
The loss of the park's iconic ice floes could mean a dramatic decline in tourism revenue, as well as a host of ecological changes, particularly impacts to local rivers and streams. The park had 2.9 million visitors in 2016, the USGS stated in a news release.
“The park-wide loss of ice can have ecological effects on aquatic species by changing stream water volume, water temperature and run-off timing in the higher elevations of the park,” said Daniel Fagre, a scientist with the USGS, in the press release.
The decline of glaciers in Montana is not an isolated phenomenon. Glaciers throughout the world, from Alaska to Chile, the Alps to Antarctica, are shrinking in response to a changing climate.
“While the shrinkage in Montana is more severe than some other places in the U.S., it is in line with trends that have been happening on a global scale,” Fountain said.
The Greenland Ice Sheet, for example, lost 375 gigatons of ice per year on average between 2011 to 2014, which is equivalent to a block of ice that's 4.6 miles long on all sides.
Loss of land-based glaciers is causing sea levels to rise, making coastal cities and towns increasingly vulnerable to flooding.
For the new results, the researchers used aerial photography and satellite images to measure glacier perimeters in late summer, after all the seasonal snow cover has melted.
At Glacier National Park, photographers and park officials have been taking repeated photos of ice floes from the same vantage points over decades, allowing visual confirmation of the results.
The USGS is currently working to study glaciers in Montana, Alaska and Washington to ascertain the extent and severity of ice loss. Depending on local environments, some glaciers may be resisting the broad-scale trends and been stable or even expanded, at least for now.
Twitter grants everyone access to quality filter for tweet notifications2025-04-02 09:54
Not everyone is happy Jimmy Fallon messed with Donald Trump's hair2025-04-02 09:33
Why DJI's foldable drone will crush the GoPro Karma2025-04-02 09:13
Many New Yorkers remain pretty chill about the NYC explosion2025-04-02 09:10
Slack goes down again, prompting anxiety everywhere2025-04-02 08:51
'Sound of Music' actress Charmian Carr dead at 732025-04-02 08:44
If you found a purse at the Emmys, please return it to Amanda Abbington2025-04-02 08:40
Girl in inflatable T2025-04-02 08:12
Florida hurricane forecast remains uncertain, but trends in state's favor2025-04-02 08:07
Tatiana Maslany takes home Outstanding Lead Actress in a Drama Series2025-04-02 07:59
Airbnb activates disaster response site for Louisiana flooding2025-04-02 09:19
If you found a purse at the Emmys, please return it to Amanda Abbington2025-04-02 08:51
Daniel Radcliffe and the 'Stranger Things' kids are huge fans of each other2025-04-02 08:11
Some Samsung Note7 replacements have new issues.2025-04-02 07:53
U.S. pole vaulter skids to a halt for national anthem2025-04-02 07:51
We now know exactly how many times Trump has tweeted his favorite insults2025-04-02 07:47
Tulsa teacher's Facebook post: 'put yourself in the shoes of a child of color'2025-04-02 07:36
Millennials, rejoice: MTV is bringing back TRL2025-04-02 07:29
Dressage horse dancing to 'Smooth' by Santana wins gold for chillest horse2025-04-02 07:14
Mysterious 'Destiny' ARG solved, and it's part of a giant raid puzzle2025-04-02 07:12