| DOI: | 10.1002/2016GL070284
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| 论文题名: | Slip distribution of the 2014 Mw = 8.1 Pisagua, northern Chile, earthquake sequence estimated from coseismic fore-arc surface cracks |
| 作者: | Loveless J.P.; Scott C.P.; Allmendinger R.W.; González G.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8526
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| EISSN: | 1944-8257
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| 出版年: | 2016
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| 卷: | 43, 期:19 | | 起始页码: | 10134
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| 结束页码: | 10141
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| 语种: | 英语
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| 英文关键词: | Chile
; coseismic
; crack
; earthquake
; Pisagua
; subduction
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| Scopus关键词: | Cracks
; Geophysics
; Surface defects
; Centimeter-scale
; Chile
; Coseismic
; Earthquake sequences
; Pisagua
; Rupture properties
; Slip distribution
; Subduction
; Earthquakes
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| 英文摘要: | The 2014 Mw = 8.1 Iquique (Pisagua), Chile, earthquake sequence ruptured a segment of the Nazca-South America subduction zone that last hosted a great earthquake in 1877. The sequence opened >3700 surface cracks in the fore arc of decameter-scale length and millimeter-to centimeter-scale aperture. We use the strikes of measured cracks, inferred to be perpendicular to coseismically applied tension, to estimate the slip distribution of the main shock and largest aftershock. The slip estimates are compatible with those based on seismic, geodetic, and tsunami data, indicating that geologic observations can also place quantitative constraints on rupture properties. The earthquake sequence ruptured between two asperities inferred from a regional-scale distribution of surface cracks, interpreted to represent a modal or most common rupture scenario for the northern Chile subduction zone. We suggest that past events, including the 1877 earthquake, broke the 2014 Pisagua source area together with adjacent sections in a throughgoing rupture. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990988019&doi=10.1002%2f2016GL070284&partnerID=40&md5=d448d6e5b48d8e3be5e0ce30780bda5a
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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/9489
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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: | Department of Geosciences, Smith College, Northampton, MA, United States
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| Recommended Citation: | |
Loveless J.P.,Scott C.P.,Allmendinger R.W.,et al. Slip distribution of the 2014 Mw = 8.1 Pisagua, northern Chile, earthquake sequence estimated from coseismic fore-arc surface cracks[J]. Geophysical Research Letters,2016-01-01,43(19).
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