准实时中小地震震源机制波形自动反演系统的构建及在首都圈地区的应用

地震 ›› 2015, Vol. 35 ›› Issue (4): 99-108.

准实时中小地震震源机制波形自动反演系统的构建及在首都圈地区的应用

祁玉萍¹, 李闽峰², 李圣强², 王斌², 刘桂平², 肖本夫³, 江鹏¹

1.四川省地震局, 成都 610041;
2.中国地震局地震预测重点实验室, 中国地震局地震预测研究所, 北京 100036;
3.湖南省地震局, 长沙 410001

收稿日期:2014-11-24 出版日期:2015-10-31 发布日期:2020-06-28
作者简介:祁玉萍(1989-), 女, 青海西宁人, 硕士研究生毕业, 主要从事地震数据处理和地震活动性等研究。
基金资助:
“十二五”国家科技支撑计划项目课题(2012BAK19B01/07)专题和中国地震局M7工作专项资助

Quasi-automatic Waveform Inversion for Focal Mechanisms of Small to Moderate Earthquakes and its Application in the Capital Area

QI Yu-ping^1,2, LI Min-feng², LI Sheng-qiang², WANG Bin², LIU Gui-ping², XIAO Ben-fu³

1. Earthquake Administration of Sichuan Province, Chengdu 610041, China;
2. Institute of Earthquake Science, CEA, Beijing 100036, China;
3. Earthquake Administration of Hunan Province, Changsha 410001, China

Received:2014-11-24 Online:2015-10-31 Published:2020-06-28

摘要/Abstract

摘要： 基于Cut And Paste(CAP)全波形拟合反演震源机制解方法, 依托中国地震局地震预测研究所准实时地震波形数据服务系统, 通过接收区域实时连续波形数据, 构建了首都圈地区准实时准自动波形反演系统, 使系统实现当地震大于3.5级时, 可自动、迅速反演得到震源机制解。同时考虑到一些台站的地震波形质量或信噪比等因素, 系统也可通过人为干预方式重新反演求得相关结果。文中详细阐述了震源机制解波形反演系统的运行流程及该系统的基本构建思路, 并对实例进行对比分析, 表明该系统具有较好的实用性。

关键词: 震源机制解, CAP方法, 波形反演系统, 首都圈地区

Abstract: We developed a quasi-automatic real-time waveform inversion system for focal mechanisms of small to moderate earthquakes in Capital area, by using the Cut-And-Paste (CAP) method and continuously monitor regional broadband waveform data provided by the Institute of Earthquake Science, CEA, which can automatically detect the occurrences of seismic events and determine the focal mechanism solutions in real-time. In this study, automatic solutions can be obtained rapidly when the earthquake has occurred (M>3.5). In addition, since some bad or low signal-to-noise ratio (SNR) data can be included and participated in the inversion, the focal mechanism solutions can also be manually obtained. The system operation process and construction consideration are detailedly elaborated in the paper, and the system has preferable practicability by comparing the results with others.

Key words: Focal mechanism, Cut and paste (CAP), Quasi-automation waveform inversion, Capital area of China

中图分类号:

P315.7

祁玉萍, 李闽峰, 李圣强, 王斌, 刘桂平, 肖本夫, 江鹏. 准实时中小地震震源机制波形自动反演系统的构建及在首都圈地区的应用[J]. 地震, 2015, 35(4): 99-108.

QI Yu-ping, LI Min-feng, LI Sheng-qiang, WANG Bin, LIU Gui-ping, XIAO Ben-fu. Quasi-automatic Waveform Inversion for Focal Mechanisms of Small to Moderate Earthquakes and its Application in the Capital Area[J]. EARTHQUAKE, 2015, 35(4): 99-108.

参考文献

[1] Zhao L, Ming-chen Hsien, et al. An automatic system for TestEar real-time determination of TestEarthquake focal mechanism and ground motion in TaiWan[C]. Eos Tran AGU, 2011, fall meeting. Supp1. S52A-08.
[2] Dziewonski A M, Chou T A, Woodhouse J H. Determination of earthquake source parameter from waveform data for studies of global and regional seismicity[J]. Geophys Res, 1981, 86: 2825-2852.
[3] Dziewonski A M, Woodhouse J H. An experiment in systematic study of global seismicity: centroid-moment tensor solutions for 201 moderate and large earthquakes of 1981[J]. Geophys Res, 1983, 88: 3247-3271.
[4] Sipkin S A. Estimation of earthquake source parameters by the inversion of waveform data: synthetic wave-forms [J]. Phys Earth Planet Inter, 1982, 30: 242-259.
[5] Sipkin S A. Rapid determination of global moment-tensor solutions[J]. Geophys Res Lett, 1994, 1667-1670.
[6] Kawakatsu H. On the real-time monitoring of the long-period seismic wave field[J]. Bull Earthquake Res Inst, 1998, 73(3-4): 267-274.
[7] Fukuyama E, Ishida M, et al. Broadband seismic observation conducted under theFREESIA project [R]. Rep Nat’l Res Inst Earth Sci Disas Prev, 1996, 57: 23-31.
[8] Fukuyama E, shida M, Dreger D S, et al. Automated seismic moment tensor determination by using on-line broadband seismic waveforms [J]. Zisin, 1998, 51: 149-156.
[9] Fukuyama E, Ishida M, Horiuchi H, et al. NIED seismic moment tensor catalogue January 1998-December 1998[R]. Rep Nat’l Res Inst Earth Sci Disas Prev, 1999, 193: 1-35.
[10] Fukuyama E, Dreger D S. Performance test of an automated moment tensor determination system for the future “Tokay” earthquake[J]. Earth Planets Space, 2000, 52: 383-392.
[11] Tsuruoka H, Kawakatsu H, Urabe T. GRiD MT (Grid-based Real-time Determination of moment Tensors) monitoring the long period seismic wave-field[J]. Phys Each Planet Int, 2009, 175: 8-16.
[12] Bernardi F, Braunmiller J . Automatic regional moment tensor inversion in the European– Mediterranean region[J]. Geophys J Int, 2004, 157(2): 703-716.
[13] Scognamiglio L, Tinti E, et al. Real-Time Determination of Seismic Moment Tensor for the Italian Region[J]. Bull Seism Soc Am, 2009, 99(4): 2223-2242.
[14] 邱毅, 金星, 李军, 等. 利用区域台网快速自动反演中等强度地震矩张量[J]. 地震, 2014, 34(2): 65-73.
[15] 赵旭, Duputel Zacharie, 黄志斌, 等. 基于W震相技术的全球强震(M_W≥6.5)矩心矩张量自动反演系统评估[J]. 地震学报, 2014, 36(5): 800-809.
[16] 李圣强. 集群环境下中小地震震源机制波形反演的准自动系统构建及应用研究[D]. 合肥: 中国科学技术大学, 2012.
[17] Balakina L M, Savarensky E F, Vvedenskaya A V. On determination of earthquake mechanism[J]. Physics and Chemistry of the Earth, 1961, 4: 211-216.
[18] 许忠淮, 阎明, 赵仲和. 由多个小地震推断的华北地区构造应力场的方向[J]. 地震学报, 1983, (5): 1-13.
[19] Dreger D S, Helmberger D V. Determination of source parameters at regional distances with three-components sparse network data[J]. Geophys Res, 1993, 98: 8107-8125.
[20] Fan G, Wallace T. The determination of source parameters for small earthquakes from a single, very broadband seismic station[J]. Geophys Res Lett, 1991, 18(8): 1385-1388.
[21] 龙锋, 张永久, 闻学泽, 等. 2008年8月30日攀枝花—会理6.1级地震序列M_L≥4.0事件的震源机制解[J]. 地球物理学报, 2010, 53(12): 2852-2860.
[22] 罗艳, 倪四道, 曾祥方, 等. 汶川地震余震区东北端一个余震序列的地震学研究[J]. 中国科学: 地球科学, 2010, 40(6): 677-687.
[23] 洪德全, 王行舟, 韩立波, 等. 用CAP方法研究安庆4.8级地震震源机制[J]. 中国地震, 2011, 27(2): 207-214.
[24] 陈伟文, 倪四道, 汪贞杰, 等. 20]0年高雄地震震源参数的近远震波形联合反演[J]. 地球物理学报, 2012, 55(7): 2319-2328.
[25] Zhao L S, Helemberger D V. Source estimation from broadband regional seismograms[J]. Bull Seism Soc Am, 1994, 84: 91-104.
[26] Zhu L P, Helemberger D V. Advancement in source estimation technique using broadband regional seismograms[J]. Bull Seism Soc Am, 1996, 86: 1634-1641.
[27] 谢小碧, 郑天愉, 姚振兴. 理论地震图计算方法[J]. 地球物理学报, 1992, 35(6): 790-801.
[28] Zhu L P, Luis A, Rivera. A note on the dynamic and static displacement from a point source in multilayered media[J]. Geophys J Int, 2002, 148: 619-627.
[29] 孙若昧, 刘福田. 京津唐地区地壳结构与强震的发生: Ⅰ.P波速度结构[J]. 地球物理学报, 1995, 38(5): 699-704.
[30] 孙若昧. 京津唐地区地壳结构与强震的发生: Ⅰ.S波速度结构[J]. 地球物理学报, 1996, 39(3): 347-355.
[31] Tan Y, Helmberger D. A new method for determining small Test Earthquake source parameters using short-period P waves[J]. Bull Seism Soc Am, 2007, 97(4): 1176-1195.
[32] 黄建平, 倪四道, 傅容珊, 等. 综合近震及远震波形反演2006文安地震(M_W5.1)的震源机制解[J]. 地球物理学报, 2010, 52(1): 120-130.
[33] 张项, 陈棋福, 赵里, 等. 用P波初动波形求解中小地震震源机制解[J]. 中国地震, 2009, 26(3): 273-282.