Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093101 |
The impact of lithology on fjord morphology | |
M. Bernard; P. Steer; K. Gallagher; D. L. Egholm | |
2021-07-30 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Assessing the impact of glaciations on topography and the co-evolution of ice-sheet dynamics requires a thorough understanding of the factors that control fjord morphology. We investigate the role of lithology on glacial valley form using topographic analyses and numerical landscape evolution models. We measure fjord depths and widths from East Central Greenland (68°-75°N), and find a control of lithology on fjord width, with wider fjords in softer rocks (i.e., sedimentary rocks). This dependency of fjord width to bedrock properties is predicted by a quarrying erosion law, but not by an abrasion one, when considering results from a simple 2D model and a more detailed 3D ice flow model (iSOSIA). Our analyses and numerical results reveal a potential control of lithology on the width of glacial valleys with glacial quarrying as a plausible responsible mechanism. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335361 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | M. Bernard,P. Steer,K. Gallagher,et al. The impact of lithology on fjord morphology[J]. Geophysical Research Letters,2021. |
APA | M. Bernard,P. Steer,K. Gallagher,&D. L. Egholm.(2021).The impact of lithology on fjord morphology.Geophysical Research Letters. |
MLA | M. Bernard,et al."The impact of lithology on fjord morphology".Geophysical Research Letters (2021). |
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