气候变化领域集成服务门户(CCPortal): Fault slip behavior and segmentation revealed by geomorphic offset clusters: An example from the middle Riganpei Co fault, central Tibet

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DOI	10.1016/j.jseaes.2023.105976
	Fault slip behavior and segmentation revealed by geomorphic offset clusters: An example from the middle Riganpei Co fault, central Tibet
	Tang, Qing; Zheng, Wenjun; Bi, Haiyun; Zhang, Dongli; Liu, Bingxu; Wei, Shiqi
发表日期	2024
ISSN	1367-9120
EISSN	1878-5786
卷号	260
英文摘要	High-resolution topographic datasets are useful for revealing offset features of fault geomorphology and are thus important for reconstructing the evolution history of faults. The Riganpei Co fault, located in the central Tibetan Plateau, is an important active fault on the northern boundary of the Bangong-Nujiang suture zone. In this study, WorldView-2 stereo images were used to generate high-resolution topographic data in a 1 km range on both flanks of the middle section of the Riganpei Co fault. We interpreted the tectonic geomorphology along the fault, classified it into distinct units, and measured the horizontal displacement of each unit. Within approximately 70 km along the fault, we obtained 396 displacement measurements ranging from 0 to 60 m. Given the evident uneven distribution of displacement, the fault was divided into four segments. In each fault segment, the reconstructed slip distributions revealed a tendency of larger displacements in the center and smaller displacements toward the ends. The cumulative offset probability distribution (COPD) of displacements displays 4-5 offset clusters in the range of 0-30 m for each segment, suggesting that at least four large earthquakes ruptured this fault. The binned COPD demonstrated that there are differences in the displacement accumulation modes among these fault segments, where the middle segment follows a characteristic slip accumulation mode. Reconstructed cumulative slip profiles revealed a complex pattern of strong earthquake activities along the Riganpei Co fault.
关键词	Slip behavior Horizontal displacement Cumulative offset distribution Riganpei Co fault High-resolution topographic data
英文关键词	SAN-ANDREAS FAULT; SURFACE RUPTURE; FIELD OBSERVATIONS; LARGE EARTHQUAKES; STEREO IMAGERY; LIDAR; DEFORMATION; EXTENSION; RECURRENCE; INTRAPLATE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001137918700001
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283515
作者单位	Sun Yat Sen University; Southern Marine Science & Engineering Guangdong Laboratory; Southern Marine Science & Engineering Guangdong Laboratory (Zhuhai); China Earthquake Administration
推荐引用方式 GB/T 7714	Tang, Qing,Zheng, Wenjun,Bi, Haiyun,et al. Fault slip behavior and segmentation revealed by geomorphic offset clusters: An example from the middle Riganpei Co fault, central Tibet[J],2024,260.
APA	Tang, Qing,Zheng, Wenjun,Bi, Haiyun,Zhang, Dongli,Liu, Bingxu,&Wei, Shiqi.(2024).Fault slip behavior and segmentation revealed by geomorphic offset clusters: An example from the middle Riganpei Co fault, central Tibet.JOURNAL OF ASIAN EARTH SCIENCES,260.
MLA	Tang, Qing,et al."Fault slip behavior and segmentation revealed by geomorphic offset clusters: An example from the middle Riganpei Co fault, central Tibet".JOURNAL OF ASIAN EARTH SCIENCES 260(2024).