Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087643 |
The impact of sediment supply on the initiation and magnitude of runoff‐generated debris flows 2 | |
Hui Tang; Luke A. McGuire; Jason W. Kean; Joel B. Smith | |
2020-06-09 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Rainfall intensity‐duration (ID) thresholds are commonly used to assess the potential for runoff‐generated debris flows, but the sensitivity of these thresholds to sediment supply, which can change rapidly with time, is relatively unexplored. Furthermore, debris flows often self‐organize into distinct surges but the factors controlling the magnitude and frequency of these surges, including sediment supply and grain size, are poorly constrained. We use a combination of numerical modeling and debris flow monitoring data from Chalk Cliffs, Colorado, USA, to explore how sediment supply influences rainfall ID thresholds for debris flows and surge properties. Results suggest that rainfall ID thresholds only become sensitive to sediment supply below a sediment thickness threshold. Surge magnitude is a non‐monotonic function of sediment supply (i.e. channel bed sediment thickness and grain size) with the largest surges tending to form at intermediate values of sediment availability with intermediate grain sizes. |
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/274365 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Hui Tang,Luke A. McGuire,Jason W. Kean,等. The impact of sediment supply on the initiation and magnitude of runoff‐generated debris flows 2[J]. Geophysical Research Letters,2020. |
APA | Hui Tang,Luke A. McGuire,Jason W. Kean,&Joel B. Smith.(2020).The impact of sediment supply on the initiation and magnitude of runoff‐generated debris flows 2.Geophysical Research Letters. |
MLA | Hui Tang,et al."The impact of sediment supply on the initiation and magnitude of runoff‐generated debris flows 2".Geophysical Research Letters (2020). |
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