Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075722 |
Fiber-Optic Network Observations of Earthquake Wavefields | |
Lindsey, Nathaniel J.1,2; Martin, Eileen R.3,4; Dreger, Douglas S.1; Freifeld, Barry2; Cole, Stephen5; James, Stephanie R.6,7; Biondi, Biondo L.3,4; Ajo-Franklin, Jonathan B.2 | |
2017-12-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:23 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Our understanding of subsurface processes suffers from a profound observation bias: seismometers are sparse and clustered on continents. A new seismic recording approach, distributed acoustic sensing (DAS), transforms telecommunication fiber-optic cables into sensor arrays enabling meter-scale recording over tens of kilometers of linear fiber length. We analyze cataloged earthquake observations from three DAS arrays with different horizontal geometries to demonstrate some possibilities using this technology. In Fairbanks, Alaska, we find that stacking ground motion records along 20 m of fiber yield a waveform that shows a high degree of correlation in amplitude and phase with a colocated inertial seismometer record at 0.8-1.6 Hz. Using an L-shaped DAS array in Northern California, we record the nearly vertically incident arrival of an earthquake from The Geysers Geothermal Field and estimate its backazimuth and slowness via beamforming for different phases of the seismic wavefield. Lastly, we install a fiber in existing telecommunications conduits below Stanford University and show that little cable-to-soil coupling is required for teleseismic P and S phase arrival detection. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419102400013 |
WOS关键词 | TOMOGRAPHY |
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/25693 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Berkeley, Earth & Planetary Sci Dept, Berkeley, CA 94720 USA; 2.Lawrence Berkeley Natl Lab, Energy Geosci Div, Berkeley, CA 94720 USA; 3.Stanford Univ, Inst Computat & Math Engn, Stanford, CA 94305 USA; 4.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA; 5.OptaSense Inc, Brea, CA USA; 6.Univ Florida, Dept Geol Sci, Gainesville, FL USA; 7.Sandia Natl Labs, Albuquerque, NM USA |
推荐引用方式 GB/T 7714 | Lindsey, Nathaniel J.,Martin, Eileen R.,Dreger, Douglas S.,et al. Fiber-Optic Network Observations of Earthquake Wavefields[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(23). |
APA | Lindsey, Nathaniel J..,Martin, Eileen R..,Dreger, Douglas S..,Freifeld, Barry.,Cole, Stephen.,...&Ajo-Franklin, Jonathan B..(2017).Fiber-Optic Network Observations of Earthquake Wavefields.GEOPHYSICAL RESEARCH LETTERS,44(23). |
MLA | Lindsey, Nathaniel J.,et al."Fiber-Optic Network Observations of Earthquake Wavefields".GEOPHYSICAL RESEARCH LETTERS 44.23(2017). |
条目包含的文件 | 条目无相关文件。 |
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