| DOI: | 10.1002/2016GL067954
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| 论文题名: | Three-dimensional displacement field of the 2015 Mw8.3 Illapel earthquake (Chile) from across- and along-track Sentinel-1 TOPS interferometry |
| 作者: | Grandin R.; Klein E.; Métois M.; Vigny C.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9246
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| EISSN: | 1944-8977
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| 出版年: | 2016
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| 卷: | 43, 期:6 | | 起始页码: | 2552
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| 结束页码: | 2561
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| 语种: | 英语
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| 英文关键词: | GPS
; Sentinel-1
; subduction earthquake
; synthetic aperture radar
; tectonic deformation
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| Scopus关键词: | Earthquakes
; Geophysics
; Global positioning system
; Interferometry
; Radar
; Cross correlation techniques
; Double differences
; Large squint angles
; Sentinel-1
; Subduction earthquakes
; Synthetic aperture radar interferometry
; Tectonic deformations
; Three-dimensional displacements
; Synthetic aperture radar
; azimuth
; deformation mechanism
; displacement
; earthquake event
; ground motion
; radar interferometry
; Sentinel
; subduction zone
; synthetic aperture radar
; tectonic setting
; three-dimensional modeling
; Chile
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| 英文摘要: | Wide-swath imaging has become a standard acquisition mode for radar missions aiming at applying synthetic aperture radar interferometry (InSAR) at global scale with enhanced revisit frequency. Increased swath width, compared to classical Stripmap imaging mode, is achieved at the expense of azimuthal resolution. This makes along-track displacements, and subsequently north-south displacements, difficult to measure using conventional split-beam (multiple-aperture) InSAR or cross-correlation techniques. Alternatively, we show here that the along-track component of ground motion can be deduced from the double difference between backward and forward looking interferograms within regions of burst overlap. "Burst overlap interferometry" takes advantage of the large squint angle diversity of Sentinel-1 (∼1°) to achieve subdecimetric accuracy on the along-track component of ground motion. We demonstrate the efficiency of this method using Sentinel-1 data covering the 2015 Mw8.3 Illapel earthquake (Chile) for which we retrieve the full 3-D displacement field and validate it against observations from a dense network of GPS sensors. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978017197&doi=10.1002%2f2016GL067954&partnerID=40&md5=247bc21c29b78091c5da1a4a2fc3126e
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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/10209
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Institut de Physique du Globe de Paris, UMR 7154, Sorbonne Paris Cité, Université Paris Diderot, Paris, France
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| Recommended Citation: | |
Grandin R.,Klein E.,Métois M.,et al. Three-dimensional displacement field of the 2015 Mw8.3 Illapel earthquake (Chile) from across- and along-track Sentinel-1 TOPS interferometry[J]. Geophysical Research Letters,2016-01-01,43(6).
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