| 项目编号: | 1658800
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| 项目名称: | Investigating Feedbacks Between Deformation and Groundwater Flow in a Slow Moving Landslide |
| 作者: | Noah Finnegan
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| 承担单位: | University of California-Santa Cruz
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| 批准年: | 2017
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| 开始日期: | 2017-02-15
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| 结束日期: | 2020-01-31
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| 资助金额: | 333968
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | landslide
; groundwater flow
; landslide deformation
; slow-moving landslide
; landslide mechanic
; landslide failure
; slow slip
; oak ridge earthflow
; slow seasonal slip
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| 英文摘要: | In the U.S., landslides annually claim 25-50 lives and cause $1.6-3.2 billion in damage. While some landslides fail catastrophically, others exhibit slow seasonal slip, often amounting to only centimeters to meters per year. What determines which of these two differing modes of behavior dominates remains a key problem in landslide mechanics and natural hazard prediction. This project will investigate the physical processes that are thought to govern slow slip in landslides.
Specifically, this project will test two hypotheses for feedbacks between landslide deformation and groundwater flow at a large, active, slow-moving landslide (Oak Ridge earthflow) near San Jose, CA. The first hypothesis argues that sliding along a landslide's margins causes changes in permeability that will lead both to retention of water and to patterns of groundwater flow that will encourage future failure in one location. The second hypothesis argues that sliding induces expansion of soil pore spaces in slow moving landslides, which reduces water pressure inside the slide and hence stabilizes basal sliding. Both of these hypotheses suggest feedbacks on sliding that are fundamental to the process of landslide failure. Although each hypothesis rests on a sound physical and experimental basis, only very limited field data exist to test each. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90536
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Noah Finnegan. Investigating Feedbacks Between Deformation and Groundwater Flow in a Slow Moving Landslide. 2017-01-01.
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