Author:
Fan Xiaoran,Zhang Guohong,Zhao Dezheng,Xie Chaodi,Huang Chuanchao,Shan Xinjian
Abstract
The 2021 Mw 7.3 Maduo earthquake revealed the significant seismic hazard of faults developed within the Bayan Har Block of eastern Tibet, China (e.g., the Kunlun Pass–Jiangcuo Fault). Relocated aftershock data are in good agreement with the Interferometric Synthetic Aperture Radar (InSAR) coseismic displacement field and field investigations. In this study, we used aftershock point cloud fitting to model the relocated aftershocks of the Maduo earthquake, and obtained the detailed geometry and characteristics of the seismogenic fault. Based on InSAR coseismic deformation, the geometric model of the seismogenic fault and its slip distribution were retrieved. The results show that this event was shallow (0–10 km) and characterized by sinistral strike-slip motion. We identified four asperities along the fault strike; the maximum slip of 4.84 m occurred on the eastern segment of the fault, in an area where the strike changed. The results suggest that the central segment of the main seismogenic fault is mature and smooth, while western and eastern segments are complex and immature.
Subject
General Earth and Planetary Sciences
Reference49 articles.
1. LOF: identifying density-based local outliers;Breunig,2000
2. Rupture kinematics and coseismic slip model of the 2021 Mw 7.3 Maduo (China) earthquake: Implications for the seismic hazard of the Kunlun fault;Chen;Remote Sens.,2021
3. The 2009 L'Aquila (central Italy) MW6.3 earthquake: Main shock and aftershocks;Chiarabba;Geophys. Res. Lett.,2009
4. Apparent stress, fault maturity and seismic hazard for normal-fault earthquakes at subduction zones;Choy;Geophys. J. Int.,2004
5. The October 17, 1989, Loma Prieta, California, earthquake and its aftershocks: Geometry of the sequence from high-resolution locations;Dietz;Geophys. Res. Lett.,1990
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献