| 项目编号: | 1625221
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| 项目名称: | Constraints on fault mechanics and seismic hazard from the integration of high- resolution topography and InSAR datasets |
| 作者: | Chelsea Scott
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| 承担单位: | Scott Chelsea P
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| 批准年: | 2017
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| 开始日期: | 2017-01-01
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| 结束日期: | 2018-12-31
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| 资助金额: | 174000
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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: | fault mechanic
; fault slip rate
; constraint
; field constraint
; geodetic dataset
; project
; topography datum
; little fault slip
; insar datum
; complementary constraint
; along-strike coseismic fault slip
; high-resolution topography
; satellite radar dataset
; nsf-sponsored open topography facility
; fault slip
; differential topography datum
; coseismic fault slip
; fault slip model
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| 英文摘要: | Dr. Chelsea P. Scott has been granted an NSF EAR Postdoctoral fellowship to carry out research and education activities at Arizona State University. The investigation will aim at improving constraints on fault slip rates estimated from both geologic and geodetic datasets. Accurate slip rates are critical to properly estimate future seismic activity in a region. Dr. Scott will use a novel approach of combining high-resolution topography and satellite radar datasets, bringing together complementary constraints on near- and far- field ground deformation. The improved understanding of fault mechanics from this study will result in better determination of fault slip rates in the geologic record and on quantified uncertainties of paleoseismic slip rates. In addition, the PI will lead workshops at the NSF-sponsored Open Topography facility, co-develop undergraduate courses at ASU, and promote computer-coding skills with high school women.
This research will focus on using near- and far- field constraints on the magnitude and distribution of surface strain to infer the depth variability of fault slip. The fault slip models produced with InSAR data typically suggest little fault slip in the upper several kilometers of the crust, which is at odds with the topography data. The first goal of this project is to examine the distribution of fault slip inferred from the joint inversion of InSAR and differential topography data. The second goal of the project is to examine the implications for strain accumulation over many earthquake cycles. The study will improve constraints on the relative proportions of coseismic fault slip in the seismogenic crust. The improved understanding on fault mechanics will serve as input to further work in this project that will focus on quantifying the long-term variation in along-strike coseismic fault slip and the ratio between slip at the surface and at depth over many simulated earthquake cycles. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90673
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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: | |
Chelsea Scott. Constraints on fault mechanics and seismic hazard from the integration of high- resolution topography and InSAR datasets. 2017-01-01.
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