Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071730 |
Self-formed waterfall plunge pools in homogeneous rock | |
Scheingross, Joel S.1,2; Lo, Daniel Y.1; Lamb, Michael P.1 | |
2017 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | Waterfalls are ubiquitous, and their upstream propagation can set the pace of landscape evolution, yet no experimental studies have examined waterfall plunge pool erosion in homogeneous rock. We performed laboratory experiments, using synthetic foam as a bedrock simulant, to produce self-formed waterfall plunge pools via particle impact abrasion. Plunge pool vertical incision exceeded lateral erosion by approximately tenfold until pools deepened to the point that the supplied sediment could not be evacuated and deposition armored the pool bedrock floor. Lateral erosion of plunge pool sidewalls continued after sediment deposition, but primarily at the downstream pool wall, which might lead to undermining of the plunge pool lip, sediment evacuation, and continued vertical pool floor incision in natural streams. Undercutting of the upstream pool wall was absent, and our results suggest that vertical drilling of successive plunge pools is a more efficient waterfall retreat mechanism than the classic model of headwall undercutting and collapse in homogeneous rock. |
英文关键词 | waterfalls plunge pool erosion bedrock erosion knickpoint retreat river incision landscape evolution |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393954900024 |
WOS关键词 | SEDIMENT TRANSPORT ; BEDROCK CHANNELS ; RIVER INCISION ; NIAGARA-FALLS ; EROSION ; ORIGIN ; MECHANICS ; EVOLUTION ; POTHOLES ; VARIETY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26727 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 2.German Res Ctr Geosci GFZ, Helmholtz Ctr Potsdam, Potsdam, Germany |
推荐引用方式 GB/T 7714 | Scheingross, Joel S.,Lo, Daniel Y.,Lamb, Michael P.. Self-formed waterfall plunge pools in homogeneous rock[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(1). |
APA | Scheingross, Joel S.,Lo, Daniel Y.,&Lamb, Michael P..(2017).Self-formed waterfall plunge pools in homogeneous rock.GEOPHYSICAL RESEARCH LETTERS,44(1). |
MLA | Scheingross, Joel S.,et al."Self-formed waterfall plunge pools in homogeneous rock".GEOPHYSICAL RESEARCH LETTERS 44.1(2017). |
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