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DOI | 10.1002/2017GL073726 |
Seismically invisible fault zones: Laboratory insights into imaging faults in anisotropic rocks | |
Kelly, C. M.; Faulkner, D. R.; Rietbrock, A. | |
2017-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:16 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Phyllosilicate-rich rocks which commonly occur within fault zones cause seismic velocity anisotropy. However, anisotropy is not always taken into account in seismic imaging and the extent of the anisotropy is often unknown. Laboratory measurements of the velocity anisotropy of fault zone rocks and gouge from the Carboneras fault zone in SE Spain indicate 10-15% velocity anisotropy in the gouge and 35-50% anisotropy in the mica-schist protolith. Greater differences in velocity are observed between the fast and slow directions in the mica-schist rock than between the gouge and the slow direction of the rock. This implies that the orientation of the anisotropy with respect to the fault is key in imaging the fault seismically. For example, for fault-parallel anisotropy, a significantly greater velocity contrast between fault gouge and rock will occur along the fault than across it, highlighting the importance of considering the foliation orientation in design of seismic experiments. |
英文关键词 | fault zones anisotropy seismic imaging |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410658800014 |
WOS关键词 | SAN-ANDREAS FAULT ; ALPINE FAULT ; NEW-ZEALAND ; CRUSTAL ANISOTROPY ; CARBONERAS FAULT ; EARTHQUAKE ; CALIFORNIA ; WAVES ; RUPTURE ; PROPAGATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28673 |
专题 | 气候变化 |
作者单位 | Univ Liverpool, Dept Earth Ocean & Ecol Sci, Liverpool, Merseyside, England |
推荐引用方式 GB/T 7714 | Kelly, C. M.,Faulkner, D. R.,Rietbrock, A.. Seismically invisible fault zones: Laboratory insights into imaging faults in anisotropic rocks[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16). |
APA | Kelly, C. M.,Faulkner, D. R.,&Rietbrock, A..(2017).Seismically invisible fault zones: Laboratory insights into imaging faults in anisotropic rocks.GEOPHYSICAL RESEARCH LETTERS,44(16). |
MLA | Kelly, C. M.,et al."Seismically invisible fault zones: Laboratory insights into imaging faults in anisotropic rocks".GEOPHYSICAL RESEARCH LETTERS 44.16(2017). |
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