2020年新疆于田MS6.4地震的地震迁移趋势

doi:10.12196/j.issn.1000-3274.2021.02.004

Abstract

Abstract: Based on the review of the anomalies before the 2020 M_S6.4 earthquake in Yutian and the sequence of strong migration- earthquakes in recent years, the seismogenic structure and dynamic of the Yutian earthquakes are analyzed. The temporal and spatial distribution of the “initiation-earthquake to migration-earthquake” in the future are discussed. According to the phenomenon of special earthquake migration and regularity in large space scale, based on the review of the pre earthquake anomalies of Yutian M_S6.4 earthquake in 2020 and the sequence of originating earthquake-migrating earthquake in Yutian region since 1900, the seismogenic structure and dynamic background of Yutian earthquake are analyzed, and the temporal and spatial distribution and trend of originating earthquake-migrating earthquake in Yutian region are discussed. This paper focuses on the statistics of earthquake migration phenomena (such as migration direction and time interval) in Yutian area in recent years. The statistical results support that earthquake migration can be used as one of the methods for medium and long-term seismic risk analysis in this area, and try to apply it to the analysis of future earthquake migration trend. The cause and dynamic mechanism of earthquake migration need to be further studied.

Key words: Qinghai-Tibet Plateau, Yutian M_S6.4 earthquake, Tectonic node, Migration earthquake

CLC Number:

P315.7

ZHANG Jun-long, MU Ruo-yu. Migration-earthquake after the 2020 Yutian M_S6.4 Earthquake, Xinjiang[J]. EARTHQUAKE, 2021, 41(2): 47-61.

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Migration-earthquake after the 2020 Yutian M_S6.4 Earthquake, Xinjiang

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Migration-earthquake after the 2020 Yutian MS6.4 Earthquake, Xinjiang

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Migration-earthquake after the 2020 Yutian M_S6.4 Earthquake, Xinjiang