Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073095 |
On the dynamic smoothing of mountains | |
Bonetti, S.1; Porporato, A.1,2 | |
2017-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | After their formation, mountainous landscapes gradually evolve toward smoother geometries controlled by the interplay of erosion and sedimentation. The statistical mechanical properties of this process and the link between topography and geology have remained largely unexplored. We analyze the slope statistics of different mountains worldwide, showing that landscape age is fingerprinted in their distribution tails. Data reveal a universal relaxation process, through an algebraic decay progressively replaced by an exponential one, with exponents described by a global monotonic function. We then investigate the dominant components of this dynamic smoothing using a landscape evolution model, showing that the time evolution of slope statistics results from a delicate balance between diffusive soil creep, noise, and advective river incision, with the relaxation phase mainly dominated by diffusion. Results may suggest ways to formulate reduced order topographic evolution models for geomorphological and climatological applications, and to explore similarities in surface evolution in different contexts. |
英文关键词 | landscape evolution topographic slope mountain age relaxation process statistical mechanics topography |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404382600033 |
WOS关键词 | MODELING LANDSCAPE EVOLUTION ; STEADY-STATE TOPOGRAPHY ; HILLSLOPE EVOLUTION ; SEDIMENT TRANSPORT ; MORPHOLOGY ; GROWTH ; UNIVERSALITY ; CONSTRAINTS ; CATCHMENT ; CAROLINA |
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/27199 |
专题 | 气候变化 |
作者单位 | 1.Duke Univ, Dept Civil & Environm Engn, Durham, NC 27706 USA; 2.Duke Univ, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA |
推荐引用方式 GB/T 7714 | Bonetti, S.,Porporato, A.. On the dynamic smoothing of mountains[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11). |
APA | Bonetti, S.,&Porporato, A..(2017).On the dynamic smoothing of mountains.GEOPHYSICAL RESEARCH LETTERS,44(11). |
MLA | Bonetti, S.,et al."On the dynamic smoothing of mountains".GEOPHYSICAL RESEARCH LETTERS 44.11(2017). |
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