DOI: 10.1002/2014GL062505
论文题名: Effects of material property variations on slip estimates for subduction interface slow-slip events
作者: Williams C.A. ; Wallace L.M.
刊名: Geophysical Research Letters
ISSN: 0094-8966
EISSN: 1944-8697
出版年: 2015
卷: 42, 期: 4 起始页码: 1113
结束页码: 1121
语种: 英语
英文关键词: elastic heterogeneity
; geodetic inversion
; slip budgets
; slow-slip events
; subduction zones
Scopus关键词: Budget control
; Geodesy
; Interfaces (materials)
; Elastic heterogeneity
; Geodetic inversion
; Slip budgets
; Slow slip events
; Subduction zones
; Finite element method
; elastic property
; finite element method
; geodetic network
; heterogeneity
; seismic velocity
; slip rate
; subduction zone
; Hikurangi Margin
; New Zealand
; Pacific Ocean
英文摘要: We investigate the influence of elastic heterogeneity on geodetic inversions of slow-slip events by inverting for slip distributions of four events along the Hikurangi Margin, New Zealand. We generate Green's functions using a finite element code in conjunction with a New Zealand-wide seismic velocity model to assign elastic properties. We find that these heterogeneous models typically require ~20% less slip than homogeneous models in cases where the slip is deep or there is reasonable geodetic coverage above the slipping region. In cases where the slip is shallow (and mostly offshore) and there is little geodetic coverage directly above the slipping region, the heterogeneous models can predict significantly larger amounts of slip (42% in our study). These changes in the predicted amounts of slip have important implications for quantifying slip budgets accommodated by slow slip at subduction zones worldwide. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924854445&doi=10.1002%2f2014GL062505&partnerID=40&md5=2f58dd1a4129c293d0ed427e7085230f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8582
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: GNS Science, Lower Hutt, New Zealand
Recommended Citation:
Williams C.A.,Wallace L.M.. Effects of material property variations on slip estimates for subduction interface slow-slip events[J]. Geophysical Research Letters,2015-01-01,42(4).