期刊
GEOLOGY
卷 48, 期 7, 页码 737-741出版社
GEOLOGICAL SOC AMER, INC
DOI: 10.1130/G47253.1
关键词
-
类别
资金
- NASA [NNX13AM16G, NNX13AK27G]
- U.S. National Science Foundation (NSF) [GRF-1451512]
- NSF [ARC-1417886]
- Danish National Research Foundation (DNRF)
- GROW Fellowship (NSF/Danish National Research Foundation [DNRF])
The Greenland ice sheet (GrIS) covers a complex network of canyons thought to be pre-glacial and fluvial in origin, implying that these features have influenced the ice sheet since its inception. The largest of these canyons terminates in northwest Greenland at the outlet of the Petermann Glacier. Yet, the genesis of this canyon, and similar features in northern Greenland, remains unknown. Here, we present numerical model simulations of early GrIS history and show that interactions among climate, the growing ice sheet, and preexisting topography may have contributed to the excavation of the canyon via repeated catastrophic outburst floods. Our results have implications for interpreting sedimentary and geomorphic features beneath the GrIS and around its marine margins, and they document a novel mechanism for landscape erosion in Greenland.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据