气候变化领域集成服务门户(CCPortal): Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet

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DOI	10.2113/2024/lithosphere_2023_193
	Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet
	Wang, Hu; Luo, Peisheng; Liang, Yi; Li, Dongming; Li, Kaijin; Deng, Lin; Chen, Lichun
发表日期	2024
ISSN	1941-8264
EISSN	1947-4253
起始页码	2024
结束页码	1
卷号	2024 期号:1
英文摘要	Microfracture density in fault damage zones can reflect spatial variability that decays in intensity as a function of distance from the fault, which is crucial in understanding the mechanical, seismological, and fluid -flow properties of the fault system. However, few studies explored the characteristics of fracture density between the two sides of active dip -slip faults due to rare field observations. Here, we measured and modeled microfractures across an active thrust fault associated with the 2008 Mw 7.9 Wenchuan earthquake in the Longmen Shan, eastern Tibetan Plateau. The results showed that the microfracture density at the Qingping site developed more intensely in the hanging wall than in the footwall for an exposed thrust fault, indicating an asymmetrical pattern. The hidden thrust fault at the Jushui site showed that microfractures developed more intensely in vertical planes in the hanging wall than in the footwall, whereas microfractures developed similarly in horizontal planes within the two sides, indicating a quasiasymmetrical pattern. Comparing the data at the two sites with computational modeling, we suggest that fault geometry might exert a first -order control of the asymmetrical microfracture density pattern, which is helpful for revealing different deformational behaviors of rock masses in the fault damage zones and better understanding the hanging -wall effect for evaluating seismic hazards on active thrust faults.
语种	英语
WOS研究方向	Geochemistry & Geophysics ; Geology
WOS类目	Geochemistry & Geophysics ; Geology
WOS记录号	WOS:001205894800008
来源期刊	LITHOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296310
作者单位	Southwest Jiaotong University; Guilin University of Technology
推荐引用方式 GB/T 7714	Wang, Hu,Luo, Peisheng,Liang, Yi,et al. Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet[J],2024,2024(1).
APA	Wang, Hu.,Luo, Peisheng.,Liang, Yi.,Li, Dongming.,Li, Kaijin.,...&Chen, Lichun.(2024).Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet.LITHOSPHERE,2024(1).
MLA	Wang, Hu,et al."Asymmetrical Microfracture Density Across an Active Thrust Fault: Evidence from the Longmen Shan Fault, Eastern Tibet".LITHOSPHERE 2024.1(2024).