Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1911817117 |
Channelization cascade in landscape evolution | |
Bonetti, Sara1; Hooshyar, Milad2,3,4; Camporeale, Carlo5; Porporato, Amilcare2,3 | |
2020-01-21 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:3页码:1375-1382 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; USA; Italy |
英文摘要 | The hierarchy of channel networks in landscapes displays features that are characteristic of nonequilibrium complex systems. Here we show that a sequence of increasingly complex ridge and valley networks is produced by a system of partial differential equations coupling landscape evolution dynamics with a specific catchment area equation. By means of a linear stability analysis we identify the critical conditions triggering channel formation and the emergence of characteristic valley spacing. The ensuing channelization cascade, described by a dimensionless number accounting for diffusive soil creep, runoff erosion, and tectonic uplift, is reminiscent of the subsequent instabilities in fluid turbulence, while the structure of the simulated patterns is indicative of a tendency to evolve toward optimal configurations, with anomalies similar to dislocation defects observed in pattern-forming systems. The choice of specific geomorphic transport laws and boundary conditions strongly influences the channelization cascade, underlying the nonlocal and nonlinear character of its dynamics. |
英文关键词 | ridge and valley patterns landscape evolution model detachment limited river networks drainage area |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000508977600027 |
WOS关键词 | DRAINAGE ; NETWORKS ; EROSION ; STABILITY ; PATTERNS ; CLIMATE ; SLOPE ; MODEL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/249689 |
专题 | 资源环境科学 |
作者单位 | 1.Swiss Fed Inst Technol, Dept Environm Syst Sci, CH-8092 Zurich, Switzerland; 2.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 3.Princeton Univ, Princeton Environm Inst, Princeton, NJ 08544 USA; 4.Princeton Univ, Princeton Inst Int & Reg Studies, Princeton, NJ 08544 USA; 5.Politecn Torino, Dept Environm Land & Infrastruct Engn, I-10129 Turin, Italy |
推荐引用方式 GB/T 7714 | Bonetti, Sara,Hooshyar, Milad,Camporeale, Carlo,et al. Channelization cascade in landscape evolution[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(3):1375-1382. |
APA | Bonetti, Sara,Hooshyar, Milad,Camporeale, Carlo,&Porporato, Amilcare.(2020).Channelization cascade in landscape evolution.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(3),1375-1382. |
MLA | Bonetti, Sara,et al."Channelization cascade in landscape evolution".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.3(2020):1375-1382. |
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