DOI: 10.1002/grl.50201
论文题名: Phantom earthquakes and triggered aseismic creep: Vertical partitioning of strain during earthquake sequences in Iran
作者: Barnhart W.D. ; Lohman R.B.
刊名: Geophysical Research Letters
ISSN: 0094-9268
EISSN: 1944-8999
出版年: 2013
卷: 40, 期: 5 起始页码: 819
结束页码: 823
语种: 英语
英文关键词: Aseismic slip
; Earthquakes
; Geodesy
; InSAR
; Zagros
Scopus关键词: Aseismic slip
; Current convergence
; Earthquake sequences
; InSAR
; Seismic-moment release
; Spatial separation
; Vertical partitioning
; Zagros
; Earthquakes
; Geodesy
; Geodetic satellites
; Earthquake effects
; creep
; earthquake
; fault slip
; geodesy
; partitioning
; seismic data
; seismic moment
; vertical profile
; Iran
英文摘要: We present evidence for significant aseismic fault slip at shallow depth above a pair of mainshock-aftershock sequences in the Zagros Mountains of Iran. The two Mw 5.9 earthquakes are each spanned by high-quality geodetic imagery and have well-recorded sequences of aftershocks that occurred beneath a salt décollement. Earlier studies of the geodetic data inferred that the mainshocks were located above the décollement, requiring a ∼10 km spatial separation between aftershock cluster and earthquake centroid. We find that the geodetic data simultaneously allow two slip sources of similar magnitude: one within the basement, collocated with aftershocks, and one shallow source (also equivalent to Mw 6) responsible for the primary signal apparent in the geodetic imagery. Should this phenomenon be widespread in the Zagros, it would partially explain a previously noted discrepancy between observed seismic moment release in the Zagros and current convergence rates between the Arabian and Eurasian plates. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876795367&doi=10.1002%2fgrl.50201&partnerID=40&md5=bb32c3d2c74c9dd6ab2602621f3d23e0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6532
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14850, United States
Recommended Citation:
Barnhart W.D.,Lohman R.B.. Phantom earthquakes and triggered aseismic creep: Vertical partitioning of strain during earthquake sequences in Iran[J]. Geophysical Research Letters,2013-01-01,40(5).