首页|Present status and prospective on the seismic hazard studies of major seismic gaps in the Sichuan-Yunnan region

Present status and prospective on the seismic hazard studies of major seismic gaps in the Sichuan-Yunnan region

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Present status and prospective on the seismic hazard studies of major seismic gaps in the Sichuan-Yunnan region
Several seismic gaps have been identified along the Xianshuihe-Xiaojiang fault zone and the Longmenshan fault zone in the Sichuan-Yunnan region,including the Daofu-Shimian gap on the Xianshuihe Fault,the Anninghe-Zemuhe gap,parts of the Xiaojiang Fault,and the Dayi gap between the Wenchuan and Lushan earthquakes.The seismic hazards of the Daofu-Shimian and Dayi gaps have aroused great concern and caused considerable debate.This paper reviews the recent geophysical ob-servations and multidisciplinary studies conducted by domestic and international researchers in these areas,focusing on seis-mogenic structures,seismic activity,fault locking,stress fields,as well as earthquake triggering,and further analyzes the current controversial viewpoints about the seismic hazards in these regions.Based on the comprehensive analysis,we argue that the kinematic status along the Daofu-Shimian segment may vary significantly along the fault strike.Due to limitations in data and models,there is no consensus on the seismogenic potential of this area.Conversely,the Dayi seismic gap presents a high seismic potential.Furthermore,we delve into the scientific problems associated with major seismic gaps in the Sichuan-Yunnan region and make prospects for the strategy of future work.We propose a research framework that combines dense array and distributed acoustic sensing,artificial intelligence and big data technologies,joint inversion of multiple geophysical fields,as well as numerical simulation techniques for comprehensive seismic hazard analysis in seismic gaps.

Sichuan-yunnan regionSeismic gapSeismic hazardPresent statusProspective

Yong ZHENG、Rumeng GUO、Dechuan LIU

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State Key Laboratory of Geological Processes and Mineral Resources,School of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China

Hubei Subsurface Multi-scale Imaging Key Laboratory Wuhan 430074,China

National Precise Gravity Measurement Facility,Huazhong University of Science and Technology,Wuhan 430074,China

Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430077,China

Luojia Laboratory Wuhan 430072,China

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Sichuan-yunnan region Seismic gap Seismic hazard Present status Prospective

2024

10.1007/s11430-024-1423-0

中国科学:地球科学(英文版)
中国科学院

中国科学:地球科学(英文版)

影响因子：1.002
ISSN：1674-7313
年,卷(期)：2024.67(11)