Global S&T Development Trend Analysis Platform of Resources and Environment
Ice sheets growing from the base | |
admin | |
2018-11-07 | |
发布年 | 2018 |
语种 | 英语 |
国家 | 英国 |
领域 | 资源环境 |
正文(英文) | Fresh water freezing onto the bottom of the Greenland and Antarctic Ice Sheets leads to the formation of spectacular plume-shaped features, according to new research published today (7th November) in Nature Communications. Understanding how ice sheets grow and evolve over time is important for predicting future ice sheet responses to climate change. The huge ice structures, observable using ice-penetrating radar, extend from the base of the ice sheet up to a maximum height of 1000 metres – half the thickness of the ice sheets – and can be tens of kilometres in length. Until now, it has been unclear how these unusual features are formed and how they grow to such sizes. A team of scientists from University of Zurich and British Antarctic Survey used computer simulations to show that these features could be reproduced by the “freeze-on” of fresh water running beneath the ice sheet. This freeze-on process of adding ice to the base of the ice sheet protects original older ice from melting. This is important as locating these structures could help scientists identify suitable sites for future ice core drilling projects. Lead author, Dr Gwendolyn Leysinger Vieli, from University of Zurich says:
Dr Richard Hindmarsh, British Antarctic Survey (BAS), adds:
Read the paper here. |
URL | 查看原文 |
来源平台 | British Antarctic Survey |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/233756 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | admin. Ice sheets growing from the base. 2018. |
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