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| DOI | 10.1029/2020GL091107 |
| Scale-Dependent Flow Directions of Rivers and the Importance of Subplate Support | |
| Lipp A.G.; Roberts G.G. | |
| 发表日期 | 2021 |
| ISSN | 0094-8276 |
| 卷号 | 48期号:1 |
| 英文摘要 | Large rivers play crucial roles in determining locations of civilization, biodiversity, and efflux to the oceans. The paths they take across Earth's surface vary with scale. At long-wavelengths rivers can have simple flow paths. At smaller scales, in meanders for example, their paths change rapidly as a consequence of lithology, biota, and other environmental variables. It is not straightforward to identify the scales at which river planforms are set. We overcome these issues by developing a spectral (wavelet) methodology to map flow-directions as a function of distance and scale. This methodology allows short-wavelength features (e.g., meanders) to be filtered from river flow-paths. With short-wavelength structure removed, the flow-directions of rivers in Western USA correlate with long-wavelength gravity anomalies suggesting control by subplate support. This relationship is replicated by an ensemble of landscape evolution models. These results combined suggest that drainage at large scales, O(103) km, is set by subplate support. © 2020. The Authors. |
| 英文关键词 | Biodiversity; Lithology; Earth's surface; Environmental variables; Flow direction; Gravity anomalies; Landscape evolutions; Long wavelength; Short wavelengths; Simple flow path; Rivers |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169248 |
| 作者单位 | Department of Earth Science and Engineering, Imperial College London, London, United Kingdom |
| 推荐引用方式 GB/T 7714 | Lipp A.G.,Roberts G.G.. Scale-Dependent Flow Directions of Rivers and the Importance of Subplate Support[J],2021,48(1). |
| APA | Lipp A.G.,&Roberts G.G..(2021).Scale-Dependent Flow Directions of Rivers and the Importance of Subplate Support.Geophysical Research Letters,48(1). |
| MLA | Lipp A.G.,et al."Scale-Dependent Flow Directions of Rivers and the Importance of Subplate Support".Geophysical Research Letters 48.1(2021). |
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