| DOI: | 10.1002/grl.50253
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| 论文题名: | Frequency-dependent landscape response to climatic forcing |
| 作者: | Godard V.; Tucker G.E.; Burch Fisher G.; Burbank D.W.; Bookhagen B.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9262
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| EISSN: | 1944-8993
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| 出版年: | 2013
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| 卷: | 40, 期:5 | | 起始页码: | 859
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| 结束页码: | 863
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| 语种: | 英语
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| 英文关键词: | climate change
; continental denudation
; landscape evolution
; numerical modelling
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| Scopus关键词: | Climatic signals
; continental denudation
; Frequency-dependent
; Landscape dynamics
; Landscape evolutions
; Late Cenozoic
; Periodic oscillation
; Spectral content
; Climate change
; Earth (planet)
; Erosion
; Lasers
; Numerical models
; Sediments
; Cenozoic
; climate forcing
; climate oscillation
; denudation
; landscape evolution
; periodicity
; sediment transport
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| 英文摘要: | Whereas the existence of pronounced orbitally controlled periodicities is a major feature of Earth climate, its impact on landscape dynamics remains poorly understood. We use a Landscape Evolution Model (LEM) to systematically investigate the response of landscapes to a range of periodic oscillations in precipitation. The resulting sediment-flux evolution displays a pronounced sensitivity to the period of the input precipitation signal, such that, for a given erodibility, a specific periodicity maximizes the amplitude of the response. This optimal period of "resonance" scales as the inverse of the erodibility, but is progressively filtered out of the response when the intensity of hillslope diffusion increases. This frequency-dependent landscape behavior displayed by our model provides a mechanistic perspective on Molnar's (2004) proposition that ubiquitous changes in Late Cenozoic continental denudation could result directly from modifications in the spectral content of the climatic signal. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876798307&doi=10.1002%2fgrl.50253&partnerID=40&md5=9d1a08558b76040b8406315d4a7129cd
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6526
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| Appears in Collections: | 气候减缓与适应
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作者单位: | CEREGE, Aix-Marseille University, Europole de l'Arbois, Aix-en-Provence, France
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| Recommended Citation: | |
Godard V.,Tucker G.E.,Burch Fisher G.,et al. Frequency-dependent landscape response to climatic forcing[J]. Geophysical Research Letters,2013-01-01,40(5).
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