| 项目编号: | 1460081
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| 项目名称: | Surface-Wave Data Products from USArray |
| 作者: | Goran Ekstrom
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| 承担单位: | Columbia University
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| 批准年: | 2014
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| 开始日期: | 2015-04-01
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| 结束日期: | 2017-03-31
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| 资助金额: | USD100213
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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: | rayleigh wave speed
; seismic wave
; usarray transportable array
; project
; ocean wave
; local elastic rayleigh wave amplification
; seismic surface wave
; map
|
| 英文摘要: | The project will use data from the 10-year deployment of the seismic stations in the USArray Transportable Array across the lower 48 states to map seismological properties of the top 100 km of the crust and shallow mantle beneath the continent. The focus of the project is a comprehensive analysis of seismic surface waves using traditional and modern methods, including the analysis of ambient seismic noise, which are seismic waves caused by human activity, ocean waves, and atmospheric phenomena such as wind. The project will generate high-resolution maps of different properties of the rocks in the crust and mantle that will facilitate continent-wide interpretation of the structure and tectonic evolution of North America.
The seismic data collected by nearly 2000 sensors distributed across the continent will be used to determine (1) maps of short-period (5-40 sec) Love and Rayleigh wave speed using inter-station cross correlation of seismic noise; (2) maps of longer-period (25-125 sec) Love and Rayleigh wave speed using two-station and mini-array techniques; and (3) maps of local elastic Rayleigh wave amplification at longer periods using a differential-amplitude technique. Quantitative comparisons of the data with model-based predictions will be used to demonstrate the consistency between results of different researchers, and identify differences that motivate further investigation. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94963
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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: | |
Goran Ekstrom. Surface-Wave Data Products from USArray. 2014-01-01.
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