zhenbo

ISSN 2096-7780 CN 10-1665/P

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

2022年1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, (2): 89-94. doi: 10.19987/j.dzkxjz.2022-021
引用本文: 梁姗姗, 邹立晔, 刘艳琼, 张雪梅. 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, (2): 89-94. doi: 10.19987/j.dzkxjz.2022-021
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 in January 2022[J]. Progress in Earthquake Sciences, 2022, (2): 89-94. doi: 10.19987/j.dzkxjz.2022-021
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 in January 2022[J]. Progress in Earthquake Sciences, 2022, (2): 89-94. doi: 10.19987/j.dzkxjz.2022-021

2022年1月中国大陆地区MS≥4.0地震震源机制解测定

doi: 10.19987/j.dzkxjz.2022-021
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 in January 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1月1—31日发生在中国大陆地区的MS≥4.0共13次地震的震源机制解。结果显示逆断型1次,走滑型9次,未知型3次。

     

  • 图  1  14次MS≥4.0以上地震震中位置和所用台站分布,子图为门源地震序列

    Figure  1.  Map of the epicenters of the 14 earthquakes with MS≥4.0 and the distribution of the used stations,and the inserted figure shows the Menyuan earthquake sequence

    图  2  1月23日青海德令哈MS5.8(MW5.5)地震震源机制解反演

    (a)波形相关系数随反演深度分布,彩色条棒表示偏量矩张量反演时双力偶分量所占比例;(b)本文所得震源机制解对应的三分量理论(红色)和实际(黑色)波形对比图,图中右测字符表示台站代码,波形上方数字为方差减少量值,代表波形拟合程度

    Figure  2.  Focal mechanism inversion of Qinghai Delingha MS5.8 (MW5.5) earthquake on January 23

    (a) Correlation between observed and synthetic waveforms versus depth,the colored-bar shows double couple percentage using ISOLA in deviatoric mode;(b) Comparison of the three-component theoretical (red) and observational (black) waveforms corresponding to focal mechanism solutions obtained in this paper. The station codes are plotted on the right of figure, the numbers above the waveforms are variance reduction, which indicate the fitting degree of waveform

    图  3  本文所得震源机制解,子图为门源地震序列

    Figure  3.  The focal mechanism solutions obtained in this paper,and the inserted figure shows the Menyuan earthquake sequence

    图  4  2022年1月中国大陆地区MS≥4.0地震类型图解

    Figure  4.  The ternary diagram of the focal mechanisms in the mainland of China in January 2022

    表  1  2022年1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 in January 2022

    序号发震时刻(BJT)
    (年-月-日 时:分:秒)
    北纬
    东经
    深度
    /km
    震级(MS参考地名
    12022-01-02 15:02:06.927.79100.65105.5云南丽江市宁蒗县
    22022-01-03 08:28:06.334.3088.22104.1西藏那曲市双湖县
    32022-01-04 12:45:03.543.3682.13214.8新疆伊犁州巩留县
    42022-01-08 01:45:27.937.77101.26106.9青海海北州门源县
    52022-01-08 01:55:19.837.75101.24104.1青海海北州门源县
    62022-01-08 02:09:05.737.78101.24125.1青海海北州门源县
    72022-01-08 14:30:05.537.77101.15104.0青海海北州门源县
    82022-01-12 18:20:40.937.69101.49105.2青海海北州门源县
    92022-01-12 20:16:17.637.75101.42104.8青海海北州门源县
    102022-01-12 21:01:53.237.69101.4984.5青海海北州门源县
    112022-01-13 00:17:59.637.76101.4284.0青海海北州门源县
    122022-01-18 06:59:30.129.1594.28504.8西藏林芝市米林县
    132022-01-20 05:52:37.132.34105.13104.0四川广元市青川县
    142022-01-23 10:21:17.938.4497.3785.8青海海西州德令哈市
    下载: 导出CSV

    表  2  2022年1月中国大陆地区MS≥4.0地震的震源机制结果

    Table  2.   Focal mechanism solutions of the earthquakes with MS≥4.0 in the mainland of China in January 2022

    序号发震时刻(BJT)
    (年-月-日 时:分:秒)
    节面Ⅰ 节面Ⅱ P T矩心
    深度
    /km
    矩震级
    (MW
    VRCN
    走向
    倾角
    滑动
    角/°
    走向
    倾角
    滑动
    角/°
    方位
    角/°
    仰角
    方位
    角/°
    仰角
    12022-01-02 15:02:06.919754−30 30666−140 16745 69835.20.824.7
    22022-01-03 08:28:06.314389235267179275161017164.60.652.3
    32022-01-04 12:45:03.52675276110401087612677144.60.852.3
    42022-01-08 01:45:27.928885211966917460111531846.40.623.2
    52022-01-08 02:09:05.726561−19573−149228331338105.00.422.0
    62022-01-08 14:30:05.528184251886517352131472274.40.702.3
    72022-01-12 18:20:40.930545621186135267271573435.00.803.5
    82022-01-12 20:16:17.635778−16026371−1322123129594.70.732.5
    92022-01-12 21:01:53.23246532219611519121834034.50.713.4
    102022-01-13 00:17:59.62617591698116421541241784.20.722.4
    112022-01-18 06:59:30.115151−1224881−141117341419294.60.632.4
    122022-01-20 05:52:37.1107291752028761317368540114.00.762.0
    132022-01-23 10:21:17.916971−1797989−19331412613115.50.712.1
    下载: 导出CSV
  • [1] 梁姗姗,邹立晔,刘艳琼,等. 2021年12月中国大陆地区M≥4.0地震震源机制解测定[J]. 地震科学进展,2022,52(1):40-44

    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] Sokos E N,Zahradnik J. ISOLA a Fortran code and a Matlab GUI to perform multiple-point source inversion of seismic data[J]. Computers and Geosciences,2008,34(8):967-977 doi: 10.1016/j.cageo.2007.07.005
    [3] Sokos E,Zahradnik J. Evaluating centroid-moment-tensor uncertainty in the new version of ISOLA software[J]. Seismological Research Letters,2013,84(4):656-665 doi: 10.1785/0220130002
    [4] Bassin C G L,Laske G,Masters G. The current limits of resolution for surface wave tomography in North America[J]. Eos Transactions American Geophysical Union,2000,81(48):F897
    [5] Kennett B L N,Kerry N J. Seismic waves in a stratified half space[J]. Geophysical Journal International,1979,57(3):557-583 doi: 10.1111/j.1365-246X.1979.tb06779.x
    [6] 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
  • 加载中
图(4) / 表(2)
计量
  • 文章访问数:  290
  • HTML全文浏览量:  86
  • PDF下载量:  48
出版历程
  • 收稿日期:  2022-02-01
  • 修回日期:  2022-02-08
  • 网络出版日期:  2022-02-16

目录

    /

    返回文章
    返回
    本系统由北京仁和汇智信息技术有限公司设计开发 百度统计