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| DOI | 10.1029/2020GL090246 |
| An Autogenic Cycle of Fluvial Transience in Dipping; Layered Rocks | |
| Sheehan C.E.; Ward D.J. | |
| 发表日期 | 2021 |
| ISSN | 0094-8276 |
| 卷号 | 48期号:1 |
| 英文摘要 | We describe an autogenic process by which steady fluvial incision through dipping, layered rocks of different erodibilities cyclically generates migrating drainage divides. We develop an analytical expression for calculating the autogenic periodicity, test it by simulating the incision of idealized strike valleys with a landscape evolution model, and apply our models to estimate the autogenic periodicity within two strike valleys in central Utah. Our analysis suggests that depending on the long-term incision rate of the San Rafael River network, the autogenic periodicity within the two valleys can overlap with the ∼100 kyr glacial-interglacial period of climatic forcing, in which case the two different signals would be difficult to separate. Our method should apply to other regions of dipping layered rocks and can be used as a preliminary test to assess whether autogenic or exogenic forcings are more likely to have created a given set of transient features. © 2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | Earth sciences; Geophysics; Analytical expressions; Fluvial incision; Incision rates; Interglacial periods; Landscape evolutions; Layered rocks; River network; Transient features; Landforms |
| 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/169259 |
| 作者单位 | Department of Geology, University of Cincinnati, Cincinnati, OH, United States |
| 推荐引用方式 GB/T 7714 | Sheehan C.E.,Ward D.J.. An Autogenic Cycle of Fluvial Transience in Dipping; Layered Rocks[J],2021,48(1). |
| APA | Sheehan C.E.,&Ward D.J..(2021).An Autogenic Cycle of Fluvial Transience in Dipping; Layered Rocks.Geophysical Research Letters,48(1). |
| MLA | Sheehan C.E.,et al."An Autogenic Cycle of Fluvial Transience in Dipping; Layered Rocks".Geophysical Research Letters 48.1(2021). |
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