Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093415 |
From process to centuries: Upscaling field-calibrated models of fluvial bedrock erosion | |
Alexander R. Beer; Jens M. Turowski | |
2021-09-07 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Fluvial bedrock erosion formulas lack validation over space and time. We explore the performance of field-calibrated models at the patch-scale () and from minutes to centuries. At the hour to annual scales (in resolution), we verify predictions using linked discharge, bedload transport and at-a-point erosion, together with spatial erosion from a mountain streambed. Local and spatial erosion linearly scale with bedload mass. The unit stream power model (USP) fails to describe erosion dynamics without a threshold for its onset. Extrapolating over the decadal scale ( of discharge and bedload data), scaled models predict up to of erosion for two exceptional floods. Erosion predictions for a bi-centennial discharge varied over four orders of magnitude (extrapolated from discharge and bedload data at resolution). Bi-centennial erosion predictions summing up to for bedload models versus for USP highlight the likely dominance of large events in setting long-term erosion under sediment-starved conditions. |
领域 | 气候变化 |
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/337589 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Alexander R. Beer,Jens M. Turowski. From process to centuries: Upscaling field-calibrated models of fluvial bedrock erosion[J]. Geophysical Research Letters,2021. |
APA | Alexander R. Beer,&Jens M. Turowski.(2021).From process to centuries: Upscaling field-calibrated models of fluvial bedrock erosion.Geophysical Research Letters. |
MLA | Alexander R. Beer,et al."From process to centuries: Upscaling field-calibrated models of fluvial bedrock erosion".Geophysical Research Letters (2021). |
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