| 项目编号: | 1349572
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| 项目名称: | EAR-PF Toward early detection and tracking of mass movements at volcanoes using seismic methods |
| 作者: | Kate Allstadt
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| 承担单位: | Allstadt Kate E
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| 批准年: | 2013
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| 开始日期: | 2014-09-01
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| 结束日期: | 2015-06-30
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| 资助金额: | USD76667
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| 资助来源: | US-NSF
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| 项目类别: | Fellowship
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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: | mass movement
; alaskan volcano
; understanding
; research
; u. s. geological survey cascades volcano observatory
; real-time
; nsf earth sciences postdoctoral fellowship
; event
; new detection
; monitor volcano
; cascade volcano
|
| 英文摘要: | Dr. Kate Allstadt has been awarded an NSF Earth Sciences Postdoctoral Fellowship to carry out a research and outreach plan at the U.S. Geological Survey Cascades Volcano Observatory. This study will work towards developing new techniques and improving existing near real-time systems to detect, locate, and estimate the volume and speed of mass movements such as landslides and lahars, focusing on well-instrumented and prodigious producers of these events: the Cascade and Alaskan volcanoes. Mass wasting events such as rockslides, debris avalanches, ice avalanches, and particularly lahars/debris flows pose significant hazards at stratovolcanoes worldwide. However, unlike for eruptive activity, there is very little infrastructure in place to detect and analyze mass wasting events in near real-time, despite the hazard they pose and the availability of real-time seismic data. The aim of this work is to fill this gap by advancing our understanding of the physics of seismic wave generation by mass movements and the best techniques for characterizing them by these waves. If events can be detected quickly and reliably, there is time to warn downstream populations and reduce losses. Furthermore, to foster an enthusiasm and understanding of natural hazards and our dynamic planet in the next generation, the outreach component of this project consists of a summer program developed in collaboration with the Mount St. Helens Institute aimed at middle school girls, an age where interest in science typically drops. The summer program will combine classroom and field activities at the volcano to demonstrate how seismology and geophysics are used to detect earthquakes and landslides, monitor volcanoes, and see inside the earth - and how this is done in their backyard: the Cascade volcanoes.
The study will combine analysis of seismic recordings of historical mass movements with 3D numerical modeling of future events and controlled laboratory experiments at the U.S. Geological Survey debris flume. This combination of empirical, numerical and field experiments will provide an ideal testing ground for improving our understanding of the physics of how mass movements of a wide range of sizes generate seismic waves and for improving existing methods and developing new detection and characterization techniques. The ultimate goal is to apply the improved physical understanding and techniques developed in this research to 1) work towards improving and expanding near real-time systems using existing monitoring networks and investigate strategic upgrades where existing networks are found insufficient, and 2) characterize past and present landsliding activity at Cascade and Alaskan volcanoes that can lead to a better understanding of the surficial dynamics of these hazardous environments. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95758
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Kate Allstadt. EAR-PF Toward early detection and tracking of mass movements at volcanoes using seismic methods. 2013-01-01.
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