Skip to Main content Skip to Navigation
Journal articles

Influence of Climate‐Forcing Frequency on Hillslope Response

Abstract : Assessing rivers' and hillslopes' sensitivity to external forcing is paramount to understand landscape evolution, in particular as a response to Quaternary climate changes. River networks are usually considered to be the main conveyors of environmental signals, such as changes in precipitation, temperature, or baselevel. Yet because hillslopes provide the source of sediment for river networks, their response to environmental change also modulates landscape dynamics. In order to characterize such behavior, we analyze the response times of a transport-limited hillslope. We use simple numerical models of denudation to study hillslope responses to oscillatory forcing and understand their filtering effects on environmental signals. Modifications in the frequency of climate oscillation, such as the change that occurred at the Mid-Pleistocene Transition, can significantly modulate hillslope sediment-flux response. We infer a wide range of hillslope responses, ranging from negligible change over the full range of climate-forcing frequencies, to a significant filtering of long-period signals.
Complete list of metadata

https://hal-amu.archives-ouvertes.fr/hal-03347189
Contributor : Vincent Godard Connect in order to contact the contributor
Submitted on : Friday, September 17, 2021 - 9:02:48 AM
Last modification on : Tuesday, October 19, 2021 - 10:35:23 PM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2022-03-28

Please log in to resquest access to the document

Identifiers

Collections

Citation

V. Godard, G. Tucker. Influence of Climate‐Forcing Frequency on Hillslope Response. Geophysical Research Letters, American Geophysical Union, 2021, 48 (18), ⟨10.1029/2021GL094305⟩. ⟨hal-03347189⟩

Share

Metrics

Record views

93