Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL083623 |
Developing and Testing Physically Based Triggering Thresholds for Runoff-Generated Debris Flows | |
Tang, Hui1; McGuire, Luke A.1; Rengers, Francis K.2; Kean, Jason W.2; Staley, Dennis M.2; Smith, Joel B.2 | |
2019-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:15页码:8830-8839 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Runoff in steep channels is capable of transitioning into debris flows with hazardous implications for downstream communities and infrastructure, particularly in alpine landscapes with minimal vegetation and areas recently disturbed by wildfire. Here, we derive thresholds for the initiation of runoff-generated debris flows based on critical values of dimensionless discharge and Shields stress. These thresholds are derived by using a numerical model to estimate the hydrodynamic conditions coinciding with the timing of debris flow activity in a recently burned basin. A benefit of hydrodynamic thresholds is that they can be used to assess debris flow likelihood based on measurable hydrologic and geomorphic parameters and therefore provide more universal criteria for quantifying the runoff-to-debris flow transition in landscape evolution studies and hazard assessments. We then demonstrate how hydrodynamic thresholds can be used to estimate rainfall intensity-duration thresholds for runoff-generated debris flows without the need for historic debris flow observations. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483812500026 |
WOS关键词 | INTENSITY-DURATION THRESHOLDS ; SOIL-HYDRAULIC-PROPERTIES ; MODELING WATER EROSION ; RAINFALL INTENSITY ; SEDIMENT TRANSPORT ; INITIATION ; INFILTRATION ; PRINCIPLES ; DOLOMITES ; FAILURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/186032 |
专题 | 气候变化 |
作者单位 | 1.Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA; 2.US Geol Survey, Golden, CO USA |
推荐引用方式 GB/T 7714 | Tang, Hui,McGuire, Luke A.,Rengers, Francis K.,et al. Developing and Testing Physically Based Triggering Thresholds for Runoff-Generated Debris Flows[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(15):8830-8839. |
APA | Tang, Hui,McGuire, Luke A.,Rengers, Francis K.,Kean, Jason W.,Staley, Dennis M.,&Smith, Joel B..(2019).Developing and Testing Physically Based Triggering Thresholds for Runoff-Generated Debris Flows.GEOPHYSICAL RESEARCH LETTERS,46(15),8830-8839. |
MLA | Tang, Hui,et al."Developing and Testing Physically Based Triggering Thresholds for Runoff-Generated Debris Flows".GEOPHYSICAL RESEARCH LETTERS 46.15(2019):8830-8839. |
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