CNN的勃朗峰冰川可能<强烈>崩塌强烈>,意大利警告说:
勃朗峰山脉大乔拉斯山上的Planpincieux冰川可能会有惊人的25万立方米(8.8百万立方英尺)的冰脱离,Valle d'Aosta地区政府和Fondazione Montagna Sicura(安全山区基金会)的专家在本周发表的一份分析报告中报告了。专家说,虽然不可能预测“强>崩塌”的确切时间,但8月和9月的观测显示,冰川正在以每天50至60厘米(20至24英寸)的速度移动。
“这些现象再次表明,由于气候因素,这座山正在经历一个强烈的变化阶段,因此它特别脆弱。”附近的Courmayeur市长Stefano Miserocchi在一份声明中说。“在这种情况下,这是一个对高温特别敏感的温带冰川。”作为一项预防措施,米萨罗基下令关闭瓦尔费列特山谷的道路,并疏散罗什福尔地区的山间小屋。
链接中图像的标题(如下所示)被标记为图22,因此它可能来自某个更大的报告。
我对“崩溃”这个词的选择很好奇。冰川到底有什么作用?它会像a Soufflé崩塌那样崩塌吗?或者这更像雪崩,或者整个冰川开始以更快的速度滑动,比如每天几米,而不是现在的几十厘米?< / p > < p > < a href = " https://i.stack.imgur.com/Qukpq.jpg " rel = " noreferrer " > < img src = " https://i.stack.imgur.com/Qukpq.jpg " alt = " / > < / > < / p >
(来源:NSIDC)
So coming back to the hanging glacier, its avalanches is an ongoing process and the word collapse gives the wrong impression. The glacier is not collapsing. Given climate warming the glacier will likely decrease in size and the avalanching change, possibly stop depending on the bedrock morphology on which the glacier sits. If the climate warming causes the glacier to completely melt away, then that could be considered a collapse of that glacier. But when you read different scientific articles on glaciers you will see the word used in many different ways so a tricky word to use in a good and consistent way.
References
Helmut Rott, Pedro Skvarca, Thomas Nagler, 1996 Rapid Collapse of Northern Larsen Ice Shelf, Antarctica. Science, 271 (5250) 788-792
Brendryen, J., Haflidason, H., Yokoyama, Y. et al. 2020 Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago. Nat. Geosci. 13, 363–368.