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DOI | 10.1029/2020GL087440 |
Back to Einstein: burial‐induced three‐range diffusion in fluvial sediment transport | |
J. Kevin Pierce; Marwan A. Hassan | |
2020-07-08 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Individual grains move through gravel bed rivers in cycles of motion and rest, so tracer grains diffuse as they transport downstream. Tracer experiments demonstrate at least three diffusion ranges as observation times increase, with different spreading rates in each range. Up till now, the generating processes of these ranges remains unclear. In this work, we develop a random walk model of individual bedload trajectories including motion, rest, and burial processes. The model describes three bedload diffusion ranges that terminate in a fourth non‐diffusive range when all tracers become buried. Using the model, we attribute three‐range tracer diffusion to the interplay between motion, rest, and burial processes, and we relate the multi‐range diffusion characteristics to the timescales of these processes. |
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/283386 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | J. Kevin Pierce,Marwan A. Hassan. Back to Einstein: burial‐induced three‐range diffusion in fluvial sediment transport[J]. Geophysical Research Letters,2020. |
APA | J. Kevin Pierce,&Marwan A. Hassan.(2020).Back to Einstein: burial‐induced three‐range diffusion in fluvial sediment transport.Geophysical Research Letters. |
MLA | J. Kevin Pierce,et al."Back to Einstein: burial‐induced three‐range diffusion in fluvial sediment transport".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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