远震与极远震部分震相的幅值-震级-震中距-深度建模与应用研究

薛方正 王红春 朱号锋 徐雄

薛方正,王红春,朱号锋,徐雄. 2022. 远震与极远震部分震相的幅值-震级-震中距-深度建模与应用研究. 地震学报,44(3):413−426 doi: 10.11939/jass.20210023
引用本文: 薛方正,王红春,朱号锋,徐雄. 2022. 远震与极远震部分震相的幅值-震级-震中距-深度建模与应用研究. 地震学报,44(3):413−426 doi: 10.11939/jass.20210023
Xue F Z,Wang H C,Zhu H F,Xu X. 2022. Modeling and applications on amplitude-magnitude-distance-depth of some teleseism and ultra-teleseism phases. Acta Seismologica Sinica,44(3):413−426 doi: 10.11939/jass.20210023
Citation: Xue F Z,Wang H C,Zhu H F,Xu X. 2022. Modeling and applications on amplitude-magnitude-distance-depth of some teleseism and ultra-teleseism phases. Acta Seismologica Sinica44(3):413−426 doi: 10.11939/jass.20210023

远震与极远震部分震相的幅值-震级-震中距-深度建模与应用研究

doi: 10.11939/jass.20210023
详细信息
    作者简介:

    薛方正,硕士,工程师,主要从事地震监测方面的工作,e-mail:xuefangzheng@nint.ac.cn

    通讯作者:

    王红春,博士,研究员,主要从事地震监测、震源物理方面的研究,e-mail:wanghongchun@nint.ac.cn

  • 中图分类号: P315.3+2

Modeling and applications on amplitude-magnitude-distance-depth of some teleseism and ultra-teleseism phases

  • 摘要: 不同震相具有不同的振动特性和传播规律,对应各自不同的幅值-震中距-深度衰减规律,本文基于禁核试核查国际数据中心公报,统计P,PcP,PKP,PKPbc及PKPab远震和极远震震相样本随震中距的分布,运用基于残差统计的迭代方法回归上述震相的幅值-震级-震中距-深度模型,通过震级残差标准差与均值的统计进行模型评估,结果显示:P,PcP,PKP,PKPbc及PKPab震相的震级残差标准差范围为0.30—0.36,满足一般震相相容性判断的需求;除PKPbc的残差均值大于0.03外,其余震相残差均值均为0.01左右,模型的系统偏差极小,甚至可以忽略不计。最后针对模型进行了幅值预测比对、震级相容性检测、极远震体波震级计算等三个不同场景的应用研究,验证模型可用于日常地震监测。

     

  • 图  1  量规函数计算流程图

    Figure  1.  The calculation flow chart of calibration function

    图  2  定义震相数占总震相数比例

    Figure  2.  The amount proportion of the defined phase

    图  3  定义震相观测数目随震中距的分布

    Figure  3.  Distribution of amount of definite phase with epicentral distance

    (a) P;(b) PKP;(c) PKPbc;(d) PKPab;(e) PcP

    图  4  回归得到的不同深度P震相震级矫正值随震中距变化(实线)及V/C模型给出的对应深度的量规函数(虚线)

    Figure  4.  Calibration variation of magnitude with epicentral distance of various depths (solid curve) and calibration function with various depths of V/C model (dashed line)

    图  5  台网震级与IDC公报的台网震级残差分布

    Figure  5.  Distribution of residual for network magnitude to that of IDC bulletin

    图  6  单台震级占台网震级残差分布

    (a) 模型计算台站震级;(b) IDC公报给出的台站震级

    Figure  6.  Distribution of residual with station magnitude to network magnitude

    (a) Station magnitude by calibration function;(b) Station magnitude by IDC bulletin

    图  7  PKP震相量规函数迭代计算过程及结果

    (a) 各次迭代计算对应残差;(b) 各次迭代计算对应的量规函数

    Figure  7.  Iterative process and result of the PKP phase

    (a) The residual corresponding to each iterative;(b) The calibration function corresponding to each iterative

    图  8  不同深度下震相量规函数(左侧)及台站震级相对于台网震级残差分布(右侧)

    (a) PKP震相;(b) PKPbc震相;(c) PKPab震相;(d) PcP震相

    Figure  8.  Calibration function at different depths (left)and distribution of residual for station magnitude to network magnitude (right)

    (a) PKP phase;(b) PKPbc phase;(c) PKPab phase;(d) PcP phase

    图  9  台站同时记录多个震相波形图(红色、褐色、蓝色、紫色与绿色竖线分别为P,PcP,PKP,PKPbc和PKPab震相到时)

    Figure  9.  Waveform with multiple phases observed by stations(Red,brown,blue,purple and green vertical strings indicate the arrival time of P,PcP,PKP,PKPbc and PKPab phase respectively)

    图  10  台站多震相幅值预测残差

    Figure  10.  Predicted amplitude residual of multiple phases observed by station

    图  11  事件和台站分布及AS31台站记录波形

    Figure  11.  Location of events and AS31 station, waveform observed by AS31 station

    图  12  新疆地区部分台站记录的南美地区某次mb5.3地震事件的PKP震相(右上角为台站名,括号内为计算的体波震级,波形滤波频带为0.8—4.5 Hz)

    Figure  12.  PKP phases of some mb5.3 event located in South America observed by stations in Xinjiang (Station code is labeled on right top of the waveform,and the number in bracket is the computed mb. The filter band is 0.8 to 4.5 Hz)

    图  13  新疆地区台站运用PKP震相计算到的平均震级与IDC目录震级比对

    Figure  13.  Event magnitude computed by PKP phases and magnitude provided by IDC

  • [1] 陈培善,秦嘉政. 1983. 量规函数、台站方位、台基及不同测量方法对近震震级ML的影响[J]. 地震学报,5(1):87–98.
    [2] Chen P S,Qin J Z. 1983. The effects of the calibration function,azimuths and sites of the stations and different methods of approach on the magnitude determination of near earthquakes,ML[J]. Acta Seismologica Sinica,5(1):87–98 (in Chinese).
    [3] 康清清,顾勤平,于悦颖,钱婷,黄群,霍祝青. 2019. 江苏及邻区地方性震级量规函数的研究[J]. 中国地震,35(3):521–530. doi: 10.3969/j.issn.1001-4683.2019.03.010
    [4] Kang Q Q,Gu Q P,Yu Y Y,Qian T,Huang Q,Huo Z Q. 2019. Study on calibration function of local earthquakes in Jiangsu and its adjacent areas[J]. Earthquake Research in China,35(3):521–530 (in Chinese).
    [5] 库尔哈奈克. 1992. 地震图解析[M]. 刘启元, 吴宁远, 修济刚译. 北京: 地震出版社: 10–33.
    [6] Ota K. 1992. Anatomy of Seismograms[M]. Liu Q Y, Wu N Y, Xiu J G trans. Beijing: Seismological Press: 10–33 (in Chinese).
    [7] 刘芳,张帆,张晖,赵铁锁,娜热,魏建民. 2016. 内蒙古地区地方性震级的量规函数研究[J]. 中国地震,32(3):485–493. doi: 10.3969/j.issn.1001-4683.2016.03.005
    [8] Liu F,Zhang F,Zhang H,Zhao T S,Na R,Wei J M. 2016. Study on calibration function of near earthquakes in the Inner Mongolia region[J]. Earthquake Research in China,32(3):485–493 (in Chinese).
    [9] 严尊国,薛军蓉. 1987. 中国近震震级ML综述[J]. 中国地震,3(4):44–51.
    [10] Yan Z G,Xue J R. 1987. On local magnitude ML for earthquakes in China[J]. Earthquake Research in China,3(4):44–51 (in Chinese).
    [11] 严尊国,李普丽,薛军蓉. 1992. 中国近震震级量规函数研究[J]. 中国地震,8(4):76–91.
    [12] Yan Z G,Li P L,Xue J R. 1992. Study on calibration function of local magnitude ML in China[J]. Earthquake Research in China,8(4):76–91 (in Chinese).
    [13] 张媛媛,王平,惠少兴,古云鹤. 2017. 陕西地区近震震级的量规函数研究[J]. 内陆地震,31(4):368–375.
    [14] Zhang Y Y,Wang P,Hui S X,Gu Y H. 2017. Study on calibration function of local earthquakes in Shaanxi region[J]. Inland Earthquake,31(4):368–375 (in Chinese).
    [15] Carpenter E W,Marshall P D,Douglas A. 1967. The amplitude-distance curve for short period teleseismic P-waves[J]. Geophys J Int,13(1/2/3):61–70.
    [16] Le Bras R, Wuster J. IDC Processing of Seismic, Hydroacoustic and Infrasonic Data. Revision 1. IDC Documentation User Guides.[M]. Vienna: Science Applications International Corporation: 74–96.
    [17] Murphy J R,Barker B W. 2003. Revised distance and depth corrections for use in the estimation of short-period P-wave magnitudes[J]. Bull Seismol Soc Am,93(4):1746–1764. doi: 10.1785/0120020084
    [18] Veith K F,Clawson G E. 1972. Magnitude from short-period P-wave data[J]. Bull Seismol Soc Am,62(2):435–452. doi: 10.1785/BSSA0620020435
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出版历程
  • 收稿日期:  2021-02-01
  • 修回日期:  2021-05-24
  • 网络出版日期:  2022-05-12
  • 刊出日期:  2022-06-27

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