• ISSN 1673-5722
  • CN 11-5429/P

2023年土耳其双震静态应力触发研究

张小娟 盛书中 葛坤朋 胡捷

张小娟,盛书中,葛坤朋,胡捷,2023. 2023年土耳其双震静态应力触发研究. 震灾防御技术,18(3):505−517. doi:10.11899/zzfy20230308. doi: 10.11899/zzfy20230308
引用本文: 张小娟,盛书中,葛坤朋,胡捷,2023. 2023年土耳其双震静态应力触发研究. 震灾防御技术,18(3):505−517. doi:10.11899/zzfy20230308. doi: 10.11899/zzfy20230308
Zhang Xiaojuan, Sheng Shuzhong, Ge Kunpeng, Hu Jie. Study on the Static Stress Triggering Effect of the 2023 Turkey Doublet Earthquakes[J]. Technology for Earthquake Disaster Prevention, 2023, 18(3): 505-517. doi: 10.11899/zzfy20230308
Citation: Zhang Xiaojuan, Sheng Shuzhong, Ge Kunpeng, Hu Jie. Study on the Static Stress Triggering Effect of the 2023 Turkey Doublet Earthquakes[J]. Technology for Earthquake Disaster Prevention, 2023, 18(3): 505-517. doi: 10.11899/zzfy20230308

2023年土耳其双震静态应力触发研究

doi: 10.11899/zzfy20230308
基金项目: 国家自然科学基金项目(42174074、41704053);江西省科技计划项目(20212BCJ23002、20232ACB213013);东华理工大学博士科研启动基金(DHBK2019084)
详细信息
    作者简介:

    张小娟,女,生于1984年。硕士研究生。主要从事发震构造和应力触发等方面研究工作。E-mail:zhangxiaojuangd@qq.com

    通讯作者:

    盛书中,男,生于1982年。教授。主要从事构造应力场、应力触发等方面研究工作。E-mail:ssz@cea-igp.ac.cn

  • 12 震情简介参考https://www.scieau.com/articles/2023028636
  • 23 https://earthquake.usgs.gov/earthquakes/browse/significant.php?year=2023
  • 34 http://www.koeri.boun.edu.tr/sismo/2/latest-earthquakes/automatic-solutions/

Study on the Static Stress Triggering Effect of the 2023 Turkey Doublet Earthquakes

  • 摘要: 为了研究2023年土耳其双震间是否存在应力触发作用以及双震对周边断裂和余震的影响,本文基于USGS给出的双震破裂模型、全球震源机制解(GCMT)目录和土耳其海峡大学坎迪利天文台与地震研究所区域地震海啸监测中心实时地震资料,利用Coulomb 3.3软件从静态应力触发角度对土耳其双震序列进行了研究。研究结果表明:第1次主震在第2次主震震源处产生的库仑应力量值为0.033 MPa,超过应力触发阈值0.01 MPa,反映出第2次主震的发生受到第1次主震的触发作用。两次主震在第1次主震所在的东安纳托利亚断裂破裂段的东北部和西南部有应力加载作用,且加载的库仑应力量值较大;在7.8级地震破裂段上的作用为应力卸载,即发震段应力得到释放。两次主震在第2次主震所在的卡达克断裂的破裂段1和3交汇部位产生了应力卸载作用。余震库仑应力计算结果表明2次主震对余震存在明显的触发作用。上述研究结果可以为后续地震危险性分析等相关研究提供参考。
    1)  12 震情简介参考https://www.scieau.com/articles/2023028636
    2)  23 https://earthquake.usgs.gov/earthquakes/browse/significant.php?year=2023
    3)  34 http://www.koeri.boun.edu.tr/sismo/2/latest-earthquakes/automatic-solutions/
  • 图  1  研究区地质构造与地震分布图

    Figure  1.  Geological structure and earthquake distribution of the study area

    图  2  M7.8地震在M7.5地震破裂面上产生的库仑应力分布

    Figure  2.  The Coulomb stress change distribution on the rupture plane of the M7.5 earthquake caused by the M7.8 mainshock

    图  3  第1次主震在周边断裂上产生的库仑应力变化图

    Figure  3.  The coulomb stress change on the surrounding active faults caused by the first mainshock

    图  4  双震在周边断裂上产生的库仑应力变化图

    Figure  4.  The coulomb stress change on the surrounding active faults caused by the doublet earthquakes

    图  5  双震产生的库仑应力及余震分布图

    Figure  5.  The distribution of aftershocks and coulomb stress caused by the doublet earthquakes

    表  1  震源机制解参数表

    Table  1.   The parameter table of focal mechanisms

    序号发震时间/
    年-月-日
    纬度/(°)经度/(°)震级MW深度/km节面1节面2
    走向/(°)倾角/(°)滑动角/(°)走向/(°)倾角/(°)滑动角/(°)
    11979-12-2837.4735.855.441.023190014190180
    21986-05-0537.9737.776.010.026054916482144
    31986-06-0637.9737.885.810.025090016090180
    41989-06-2436.7035.885.141.02762−8820328−93
    51991-04-1037.2136.015.333.02972−7016027−136
    61997-01-2236.2535.955.710.024339−1534581−128
    71998-05-0938.2838.995.110.025183−734183−173
    81998-06-2736.8835.316.35.853811532175171
    91998-07-0436.87735.325.433.07255833884145
    102001-06-2537.2436.215.45.0175−9218915−83
    112003-07-1338.2938.965.510.07289134289179
    122005-11-2638.2638.815.18.523751−2033975−139
    132006-03-2935.2535.435.027.321943−1031783−132
    142008-09-0337.5138.505.05.721979−1031180−169
    152008-11-1238.8435.525.110.022770−1332178−160
    162010-11-1436.5836.014.92.52453−9421137−84
    172012-07-2237.5536.384.87.63853−7819838−106
    182012-09-1937.3137.105.07.021048−1130782−138
    192014-02-1436.7436.084.910.03570−5915536−144
    202014-06-0936.7436.054.817.63465−6316436−135
    212015-11-2938.8237.745.110.033872161747219
    222017-03-0237.6238.435.610.022578−2131969−167
    232018-04-2437.6038.515.210.021263−330487−153
    242018-10-0237.6737.404.75.024290−4233248−180
    252019-03-2538.6938.074.910.034364−15724270−28
    262020-02-2538.3438.805.010.023240−2934572−127
    272020-04-0335.9435.494.812.734550−11720447−61
    282020-04-1535.8635.534.910.021947−1031683−137
    292020-06-0538.2438.765.110.023449−2434072−137
    302020-08-0438.1938.705.610.023575−1532976−165
    312020-09-0838.0638.784.810.023863−733283−153
    322021-11-1238.2038.785.07.023782−2533065−171
    332022-04-0938.1138.675.310.024883−1434077−173
    342022-10-1137.2636.235.010.01752−8018139−103
    352023-02-0637.1737.037.817.954701132080160
    362023-02-0637.1336.946.814.521166−1330678−156
    372023-02-0638.0237.207.710.026142−835884−132
    382023-02-0737.7637.745.510.0204541010880144
    392023-02-0837.9537.655.57.5206741772978716
    402023-02-2036.1136.026.316.022745−1632979−134
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