DOI: 10.1002/2015GL066478
论文题名: Scaling of maximum observed magnitudes with geometrical and stress properties of strike-slip faults
作者: Martínez-Garzõn P. ; Bohnhoff M. ; Ben-Zion Y. ; Dresen G.
刊名: Geophysical Research Letters
ISSN: 0094-8345
EISSN: 1944-8076
出版年: 2015
卷: 42, 期: 23 起始页码: 10230
结束页码: 10238
语种: 英语
英文关键词: fault geometry
; maximum observed magnitude
; scaling relations
; stress drop
; stress orientation
; strike slip
Scopus关键词: Drops
; Earthquakes
; Faulting
; Geophysics
; Strike-slip faults
; Fault geometry
; Maximum observed magnitude
; Scaling relations
; Stress drop
; Stress orientations
; Strike slip
; Fault slips
; coseismic process
; earthquake magnitude
; fault geometry
; slip rate
; stress analysis
; strike-slip fault
英文摘要: We test potential scaling between observed maximum earthquake magnitudes along 27 strike-slip faults with various properties including cumulative displacement, mapped fault length, seismogenic thickness, slip rates, and angle between fault strike and maximum horizontal stress. For 75-80% of the data set, the observed maximum scalar moment scales with the product of seismogenic thickness and either cumulative displacement or mapped fault length. Most faults from this population have slip rates >5 mm/yr (interplate faults), cumulative displacement >10 km, and relatively high angles to the maximum horizontal stress orientation. The remaining 20-25% population involves events at some distance from a plate boundary with slip rate <5 mm/yr, cumulative displacements <10 km, and ≈ 45° to the maximum horizontal stress. These earthquakes have larger magnitudes than the previous population, likely because of larger stress drops. The most likely interpretation of the results is that the maximum rupture length, and hence earthquake magnitudes, correlates with the cumulative displacement and the fault surface length. The results also suggest that progressive fault smoothing may lead to decreasing coseismic stress drops. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953637586&doi=10.1002%2f2015GL066478&partnerID=40&md5=98e8542787bb409cad60ed9a9101aee8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7961
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: GFZ German Research Centre for Geosciences, Potsdam, Germany
Recommended Citation:
Martínez-Garzõn P.,Bohnhoff M.,Ben-Zion Y.,et al. Scaling of maximum observed magnitudes with geometrical and stress properties of strike-slip faults[J]. Geophysical Research Letters,2015-01-01,42(23).