| DOI: | 10.1002/grl.50907
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| 论文题名: | Seismic interferometry with antipodal station pairs |
| 作者: | Lin F.-C.; Tsai V.C.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8584
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| EISSN: | 1944-8315
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| 出版年: | 2013
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| 卷: | 40, 期:17 | | 起始页码: | 4609
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| 结束页码: | 4613
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| 语种: | 英语
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| 英文关键词: | ambient noise
; body wave
; coda
; core phases
; cross-correlation
; Seismic interferometry
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| Scopus关键词: | Ambient noise
; Body waves
; coda
; core phases
; Cross correlations
; Seismic interferometries
; Interferometry
; Signal to noise ratio
; Earthquakes
; ambient noise
; body wave
; coda
; earthquake
; interferometry
; seismic data
; seismicity
; stacking
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| 英文摘要: | In this study, we analyze continuous data from all Global Seismographic Network stations between year 2000 and 2009 and demonstrate that several body wave phases (e.g., PP, PcPPKP, SKSP, and PPS) propagating between nearly antipodal station pairs can be clearly observed without array stacking using the noise/coda cross-correlation method. Based on temporal correlations with global seismicity, we show that the observed body waves are clearly earthquake related. Moreover, based on single-earthquake analysis, we show that the earthquake coda energy observed between ∼10,000 and 30,000 s after a large earthquake contributes the majority of the signal. We refine our method based on these observations and show that the signal can be significantly improved by selecting only earthquake coda times. With our improved processing, the PKIKP phase, which does not benefit from the focusing effect near the antipode, can now also clearly be observed for long-distance station pairs. Key Points Near-antipodal body waves can be extracted using seismic interferometry The earthquake coda energy is important for the seismic interferometry to work The coda interferometry improves the SNR of the observed body waves ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883682251&doi=10.1002%2fgrl.50907&partnerID=40&md5=48d3cafc4835b39b8f31cae172651896
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5848
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States
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| Recommended Citation: | |
Lin F.-C.,Tsai V.C.. Seismic interferometry with antipodal station pairs[J]. Geophysical Research Letters,2013-01-01,40(17).
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