[1]CHENG Zhengyu,NI Zhe,ZHOU Siyuan,et al.Analysis Based on the Meta-instability Theory of the Variation Characteristics of the Lithospheric Magnetic Field in Yunnan before the 2021 Yangbi,Yunnan MS6.4 Earthquake[J].Journal of Seismological Research,2021,44(03):391-398.
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Analysis Based on the Meta-instability Theory of the Variation Characteristics of the Lithospheric Magnetic Field in Yunnan before the 2021 Yangbi,Yunnan MS6.4 Earthquake

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 44 Number of periods: 2021 03 Page number: 391-398 Column: Public date: 2021-10-20
Title:
Analysis Based on the Meta-instability Theory of the Variation Characteristics of the Lithospheric Magnetic Field in Yunnan before the 2021 Yangbi,Yunnan MS6.4 Earthquake
Author(s):
CHENG Zhengyu1; NI Zhe1; ZHOU Siyuan1; WANG Zhendong2; WANG Can2; ZHAO Yufei1
(1.Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)(2.Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)
Keywords:
the Yangbi MS6.4 earthquake;  lithospheric magnetic field;  horizontal vector;  the meta-instability theory
CLC:
P318.5
DOI:
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Abstract:
The purpose of this paper is to explain the annual variation characteristics of the lithospheric magnetic field before the Yangbi MS6.4 earthquake with the meta-instability theory.The spatial distribution characteristics year by year of the horizontal vector of lithospheric magnetic field in Yunnan province from 2017 to 2021 before the Yangbi MS6.4 earthquake is reviewed and compared with the process of steady state-met-astable state-meta-instability state-instability state.The results show that the weakening region of the horizontal vector in the meta-instability O stage is the most easily recognized typical mark in field observation; There are “overlapping” zones in the weakening region for two consecutive periods or more,and the outer horizontal vector increase and change their direction.These mark the “irreversible” meta-instability OB stage,which indicates that the earthquake will occur at the edge of the “overlapping” region.It is a meaningful attempt to change the study of meta-instability theory from laboratory to field observation in addition.
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