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2022年4—6月中国大陆地区MS≥4.0地震震源机制解测定

梁姗姗 邹立晔 刘艳琼 张雪梅

梁姗姗, 邹立晔, 刘艳琼, 张雪梅. 2022年4—6月中国大陆地区MS≥4.0地震震源机制解测定[J]. 地震科学进展, 2022, (7): 338-343. doi: 10.19987/j.dzkxjz.2022-107
引用本文: 梁姗姗, 邹立晔, 刘艳琼, 张雪梅. 2022年4—6月中国大陆地区MS≥4.0地震震源机制解测定[J]. 地震科学进展, 2022, (7): 338-343. doi: 10.19987/j.dzkxjz.2022-107
Liang Shanshan, Zou Liye, Liu Yanqiong, Zhang Xuemei. Determination of the focal mechanism solutions of the earthquakes with MS≥4.0 occurred in the mainland of China during April to June 2022[J]. Progress in Earthquake Sciences, 2022, (7): 338-343. doi: 10.19987/j.dzkxjz.2022-107
Citation: Liang Shanshan, Zou Liye, Liu Yanqiong, Zhang Xuemei. Determination of the focal mechanism solutions of the earthquakes with MS≥4.0 occurred in the mainland of China during April to June 2022[J]. Progress in Earthquake Sciences, 2022, (7): 338-343. doi: 10.19987/j.dzkxjz.2022-107

2022年4—6月中国大陆地区MS≥4.0地震震源机制解测定

doi: 10.19987/j.dzkxjz.2022-107
基金项目: 中国地震局常规性项目“测震学科技术管理组运维”资助
详细信息
    通讯作者:

    梁姗姗(1989-),女,高级工程师,主要从事地震定位和震源机制相关研究。E-mail:liangshanshan@seis.ac.cn

  • 中图分类号: P315.3+3

Determination of the focal mechanism solutions of the earthquakes with MS≥4.0 occurred in the mainland of China during April to June 2022

  • 摘要: 本文利用中国地震台网记录的宽频带波形资料,采用近震全波形反演方法得到2022年4月1日—6月30日发生在中国大陆地区的MS≥4.0共24次地震的震源机制解。结果显示逆断型5次,走滑型17次,正断型2次。

     

  • 图  1  25次MS≥4.0以上地震震中位置和所用台站分布

    Figure  1.  Map of the epicenters of the 25 earthquakes with MS≥4.0 and the used stations

    图  2  2022年4—6月中国大陆地区MS≥4.0地震类型图解

    Figure  2.  The ternary diagram of the focal mechanisms in the mainland of China during April to June 2022

    图  3  四川芦山地震震源机制解

    Figure  3.  The focal mechanism solution of Lushan earthquake in Sichuan

    图  4  四川马尔康地震序列震源机制解

    Figure  4.  The focal mechanism solutions of Maerkang earthquake sequence in Sichuan

    表  1  2022年4—6月中国大陆地区MS≥4.0地震基本参数

    Table  1.   Events list of the earthquakes with MS≥4.0 in the mainland of China during April to June 2022

    序号发震时刻(BJT)北纬
    东经
    深度
    /km
    震级(MS参考地名
    12022-04-06 07:50:05.328.22105.03105.1四川宜宾市兴文县
    22022-04-06 12:54:04.337.6876.031184.1新疆喀什地区塔什库尔干县
    32022-04-07 05:54:49.728.12105.1584.1四川宜宾市兴文县
    42022-04-15 09:26:14.338.5297.33105.4青海海西州德令哈市
    52022-04-16 08:32:13.727.78100.6294.6云南丽江市宁蒗县
    62022-04-17 00:18:37.027.75100.6184.1云南丽江市宁蒗县
    72022-04-30 01:23:47.327.77100.6384.2云南丽江市宁蒗县
    82022-05-05 12:02:09.740.75105.63104.0内蒙古阿拉善盟阿拉善左旗
    92022-05-08 19:59:47.731.89104.4684.1四川绵阳市北川县
    102022-05-20 08:36:36.729.67102.48204.8四川雅安市汉源县
    112022-05-26 15:48:46.732.2591.89104.8西藏那曲市安多县
    122022-06-01 17:00:08.430.37102.94176.1四川雅安市芦山县
    132022-06-01 17:03:09.430.37102.92184.5四川雅安市宝兴县
    142022-06-08 14:52:24.636.0977.78105.0新疆和田地区皮山县
    152022-06-10 00:03:24.432.27101.82105.8四川阿坝州马尔康市
    162022-06-10 00:06:44.832.26101.79104.1四川阿坝州马尔康市
    172022-06-10 00:21:17.432.28101.79104.4四川阿坝州马尔康市
    182022-06-10 01:28:34.032.25101.82136.0四川阿坝州马尔康市
    192022-06-10 03:27:00.032.24101.85155.2四川阿坝州马尔康市
    202022-06-10 04:37:26.832.23101.84124.4四川阿坝州马尔康市
    212022-06-13 06:31:02.935.5984.09134.4新疆和田地区民丰县
    222022-06-14 18:11:10.032.25101.79114.4四川阿坝州马尔康市
    232022-06-17 03:19:08.342.4887.99224.7新疆巴音郭楞州和硕县
    242022-06-20 06:40:52.627.21103.75124.4贵州毕节市威宁县
    252022-06-24 02:27:37.841.7390.67255.1新疆吐鲁番市鄯善县
    下载: 导出CSV

    表  2  2022年4—6月中国大陆地区MS≥4.0地震的震源机制结果

    Table  2.   Focal mechanisms of the earthquakes with MS≥4.0 in the mainland of China during April to June 2022

    序号发震时刻
    (BJT)
    节面Ⅰ 节面Ⅱ P T矩心深度
    /km
    矩震级
    MW
    VRCN沙滩球
    走向
    倾角
    滑动角
    走向
    倾角
    滑动角
    方位角
    仰角
    方位角
    仰角
    12022-04-06 07:50:05.330070−84 10421−106 22064 262544.60.924.1
    22022-04-06 12:54:04.3214521393325946914186531404.10.502.1
    32022-04-07 05:54:49.7156396012571128793316944.30.774.0
    42022-04-15 09:26:14.393591035781149491531128125.00.752.2
    52022-04-16 08:32:13.79087171180813135445854.70.922.5
    62022-04-17 00:18:37.093831731838373180581064.40.902.1
    72022-04-30 01:23:47.3887616818179153142451884.70.772.3
    82022-05-05 12:02:09.717189−1688178−1369305874.20.612.4
    92022-05-08 19:59:47.735489−99 2579−7 25545 9343134.30.762.7
    102022-05-20 08:36:36.723981−16514776−910417124114.60.831.5
    112022-05-26 15:48:46.713787175227853182192665.00.792.7
    122022-06-01 17:00:08.422740113185472121723774125.80.831.8
    132022-06-08 14:52:24.625374−3035261−162209323059104.80.782.8
    142022-06-10 00:03:24.45786−17032680−428210191485.60.782.7
    152022-06-10 00:06:44.85477−17232282−13278159464.60.52.2
    162022-06-10 00:21:17.45968−16832579−222802413754.70.722.3
    172022-06-10 01:28:34.05990−1763298602843194385.90.841.7
    182022-06-10 03:27:00.06590173155830111520585.20.72.6
    192022-06-10 04:37:26.87471−14933360−2229735202754.60.761.6
    202022-06-13 06:31:02.9342751647674152912992274.70.833.3
    212022-06-14 18:11:10.05868−16332174−232782710454.50.852.6
    222022-06-17 03:19:08.32973981129529721377581214.40.62.6
    232022-06-20 06:40:52.67471−16333874−1929525262104.50.852.1
    242022-06-24 02:27:37.817758693338119282114269214.50.522.4
    下载: 导出CSV
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    Liang S S,Zou L Y,Liu Y Q,et al. Determination the focal mechanism solutions of earthquakes with M≥4.0 occurred in the mainland of China in December 2021[J]. Progress in Earthquake Sciences,2022,52(1):40-44
    [2] 梁姗姗,邹立晔,刘艳琼,等. 2022年1月中国大陆地区MS≥4.0地震震源机制解测定[J]. 地震科学进展,2022,52(2):89-94

    Liang S S,Zou L Y,Liu Y Q,et al. Determination of the focal mechanism solutions of the earthquakes with MS≥4.0 occurred in the mainland of China in January 2022[J]. Progress in Earthquake Sciences,2022,52(2):89-94
    [3] 梁姗姗,邹立晔,刘艳琼,等. 2022年2—3月中国大陆地区MS≥4.0地震震源机制解测定[J]. 地震科学进展,2022,52(4):183-189

    Liang S S,Zou L Y,Liu Y Q,et al. Determination of the focal mechanism solutions of the earthquakes with MS≥4.0 occurred in the mainland of China during February to March 2022[J]. Progress in Earthquake Sciences,2022,52(4):183-189
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    [8] Bouchon M. A simple method to calculate Green’s functions for elastic layered media[J]. Bulletin of the Seismological Society of America,1981,71(4):959-971 doi: 10.1785/BSSA0710040959
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出版历程
  • 收稿日期:  2022-07-04
  • 修回日期:  2022-07-07
  • 网络出版日期:  2022-07-11

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