«上一篇/Previous Article|本期目录/Table of Contents|下一篇/Next Article»

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:

期数:

2025年02期

页码:

341-350

栏目:

出版日期:

2025-02-10

文章信息/Info

Title:

Characterization of Seismic Source Parameters of Small- and Medium-Earthquakes in Western Shandong,China

作者:

陈亚红¹; 廖发圣¹; 张正帅²; 徐芳芳¹; 申茂正¹; 蔡璐¹; 董春勇¹

(1.山东省地震局 菏泽地震监测中心站,山东 菏泽 274000; 2.山东省地震局,山东 济南 250102)

Author(s):

CHEN Yahong¹; LIAO Fasheng¹; ZHANG Zhengshuai²; XU Fangfang¹; SHEN Maozheng¹; CAI Lu¹; DONG Chunyong¹

(1.Heze Earthquake Center Station,Shandong Earthquake Agency,Heze 430071,Shandong,China)(2.Shandong Earthquake Agency,Jinan 250100,Shandong,China)

关键词:

震源参数;  高频截止模型;  拐角频率;  视应力;  应力降;  b值

Keywords:

seismic source parameters;  the high-cut model;  corner frequency;  apparent stress;  stress drop;  b-value

分类号:

P315.33

DOI:

10.20015/j.cnki.ISSN1000-0666.2025.0036

摘要:

利用2013年1月—2023年7月山东地震台网记录到的鲁西地区的地震波形资料,基于高频截止震源模型,使用稳健的最小二乘方法拟合研究区内的震源谱,得到了236个中小地震的震源参数。结果显示:① 地震矩M₀为10¹¹～10¹⁴ N·m,与近震震级M_L存在显著的正相关关系:lgM₀=0.956M_L+10.421; 拐角频率为2～15 Hz,拐角频率与矩震级之间有较好的相关关系,震级越大,拐角频率越低。② 鲁西地区地震视应力为0.01 ～1.630 4 MPa,平均视应力为0.30 MPa。③ 地震多发生在视应力高值区域和高、低值过渡区域,鲁西地区的视应力高值主要分布在聊考断裂带的中北段、长清断裂以西和苍山—尼山断裂带附近的微山地区,菏泽、聊城、微山地区为低b值,低b值区域与视应力高值区域分布较为接近,反映出较高的背景应力水平,表明这些区域可能是鲁西地区中强地震的潜在震源区。

Abstract:

On the basis of the high-frequency cut-off source model,we use the robust least-squares method to fit the seismic waveform data recorded by the Shandong Seismic Networks in the period from January 2013 to July 2023 in western Shandong area,and get the source parameters of 236 small- and medium-earthquakes.The results show:① The seismic moment M₀ is distributed between 10¹¹-10¹⁴ N·m,and there is a positive correlation between the seismic moment and the magnitude M_L:lgM₀=0.956 M_L+10.421.The inflection frequency is in the range of 2-15 Hz,and shows a good correlation with the moment magnitude:the larger the magnitude,and the lower the inflection frequency; ② The visual stress is higher in Western Shandong area in 2017-2019,suggesting some enhancement of the stress field level in this area,and followed by a series of small- and medium-earthquakes; ③The spatial distribution characteristics of the visual stress show that earthquakes mostly occur in the interior and edge of the high visual stress zone,and the high visual stress is mainly distributed in the north and central parts of the Liaokao fracture zone,the Changqing rupture zone and Weishan area in western Shandong. Meanwhile,b-values are low in these areas.In the study area,the low b-value area and the high stress area is close to each other,reflecting the high seismic level.This suggests that these areas are potential medium-and strong-earthquake areas in western Shandong in future.

参考文献/References:

陈丽娟,陈学忠,龚丽文,等.2022.2021年泸县 M_S6.0地震前视应力和b值以及中小地震与地球自转相关性分析[J].大地测量与地球动力学,42(11):1133-1137.
Chen L J,Chen X Z,Gong L W,et al.2022.The apparent stress and b value and the relation between earth's rotation and small and medium earthquakes before the 2021 M_S6.0 Luxian earthquake[J].Journal of Geodesy and Geodynamics,42(11):1133-1137.(in Chinese)
陈运泰,林邦慧,王妙月,等.1976.巧家、石棉的小震震源参数的测定及其地震危险性的估计[J].地球物理学报,19(3):206-232.
Chen Y T,Lin B H,Wang M Y,et al.1976.The determination of source parameters for small earthquakes in Qiaojia and Shimian and the estimation of potential earthquake danger[J].Chinese Journal of geophysics,19(3):206-232.(in Chinese)
陈运泰,吴忠良,王培德,等.2000.数字地震学[M].北京:地震出版社.
Chen Y T,Wu Z L,Wang P D,et al.2000.Digital seismology[M].Beijing:Seismological Press.(in Chinese)
冯建刚,张辉,杨萍.2016.2013年岷县漳县6.6级地震前地震b值异常特征研究[J].地震,36(1):32-37.
Feng J G,Zhang H.Yang P.2016.Anomalies of b-value Changes before the 2013 Minxian-Zhangxian M_S6.6 earthquake[J].Earthquake,36(1):32-37.(in Chinese)
华卫.2007.中小地震震源参数定标关系研究[D].北京:中国地震局地球物理研究所.
Hua W.2007.Study on the scaling relationship of source parameters for small to modest earthquake[D].Beijing:Institute of Geophysics,China Earthquake Administration.(in Chinese)
蒋海昆,张流,周永胜.2000.不同围压条件下花岗岩变形破坏过程中的声发射时序特征[J].地球物理学报,43(6):812-826.
Jiang H K,Zhang L,Zhang Y S.2000.Behavior of acoustic emission time sequence of granite in deformation and failure process under different confining pressures[J].Chinese Journal of Geophysics,43(6):812-826.(in Chinese)
李翠芹,张正帅,郑建常,等.2023.沂沭断裂带中小地震震源参数特征[J].震灾防御技术,18(2):274-283.
Li C Q,Zhang Z S,Zheng J C,et al.2023.Characteristics of seismic-source spectral parameters of small earthquakes in Yishu Fault Zone[J].Technology for Earthquake Disaster Prevention,18(2):274-283.(in Chinese)
李全林,陈锦标,于渌,等.1978.b值时空扫描——监视破坏性地震孕育过程的一种手段[J].地球物理学报,21(2):101-125.
Li Q L,Chen J B,Yu L,et al.1978.Time and space scanning of the b-value:A method for monitoring the development of catastrophic earthquakes[J].Chinese Journal of Geophysics,21(2):101-125.(in Chinese)
李艳娥,陈学忠,王恒信.2012.汶川8.0级地震前四川地区地震视应力时空变化特征[J].地震,32(4):113-122.
Li Y E,Chen X Z,Wang H X.2012.Temporal and spatial variation of apparent stress in Sichuan area before the M_S8.0 Wenchuan Earthquake[J].Earthquake,32(4):113-122.(in Chinese)
刘杰,郑斯华,黄玉龙.2003.利用遗传算法反演非弹性衰减系数、震源参数和地震响应[J].地震学报,25(2):211-218.
Liu J,Zheng S H,Huang Y L.2003.The inversion of anelastic coefficient,source parameters and site respond using genetic algorithm[J].Acta Seismologica Sinica,25(2):211-218.(in Chinese)
苗庆杰,刘希强,石玉燕,等.2016.利用遗传算法反演山东地区S波非弹性衰减及场地响应[J].震灾防御技术,11(4):800-807.
Miao Q J,Liu X Q,Shi Y Y,et al.2016.The inversion of S wave inelastic attenuation and site response by genetic algorithms in the Shandong region[J].Technology for Earthquake Disaster Prevention,11(4):800-807.(in Chinese)
王鹏,郑建常,刘希强,等.2015.郯庐断裂带山东段震源参数及应力状态[J].地震地质,37(4):966-981.
Wang P,Zheng J C,Liu X Q,et al.2015.Research of source parameters and stress state in Shandong segment of Tanlu fault zone[J].Seismology and geology,37(4):966-981.(in Chinese)
王鹏,郑建常,赵金花.2013.胶东半岛地区震源波谱参数研究[J].地震工程学报,35(2):360-365.
Wang P,Zheng J C,Zhao J H.2013.Status of seismic source spectral parameters in the Jiaodong Peninsula[J].China Earthquake Engineering Joural,35(2):360-365.(in Chinese)
王鹏,郑建常.2014.鲁东地区视应力时空变化特征分析[J].地震,34(4):70-77.
Wang P,Zheng J C.2014.Temporal and spatial variation of apparent stress in Eastern Shandong Province[J].Earthquake,34(4):70-77.(in Chinese)
王鹏.2019.山东半岛长岛和乳山震群发震机制研究[D].北京:中国地震局地球物理研究所.
Wang P.2019.Study on seismogenic mechanism of Chang Island and Rushan earthquake swarms in Shandong peninsula[D].Beijing:the Institute of Geophysics,China Earthquake Administration.(in Chinese)
邬成栋,付 虹,赵小艳.2010.小湾水库近场区地震震源参数初步研究[J].地震研究,33(1):50-54.
Wu C D,Fu H,Zhao X Y.2010.Primary study on source parameters near Xiaowan Reservoir[J].Journal of Seismological Research,33(1):50-54.(in Chinese)
吴忠良.2001.由宽频带辐射能量目录和地震矩目录给出的视应力及其地震学意义[J].中国地震,17(1):8-15.
Wu Z L.2001.Apparent stress obtained from broadband radiated energy catalogue and seismic moment catalogue and its seismological significance[J].Earthquake Research in China,17(1):8-15.(in Chinese)
许洪泰,葛孚刚,沈得秀,等.2012.鲁西地区苍山—尼山断裂活动习性及地震活动研究[J].华北地震科学,30(3):8-9.
Xu H T,Ge F G,Shen D X,et al.2012.Study on activity of Cangshan-Nishan Fault and Paleo-earthquake[J].North China Earthquake Seciences,30(3):8-9.(in Chinese)
易桂喜,闻学泽,辛华,等.2011.2008年汶川M_S8.0地震前龙门山—岷山构造带的地震活动性参数与地震视应力分布[J].地球物理学报,54(6):1490-1500.
Yi G X,Wen X Z,Xin H,et al.2011.Distributions of seismicity parameters and seismic apparent stresses on the Longmenshan-Minshan tectonic zone before the 2008 M_S8.0 Wenchuan earthquake[J].Chinese Journal of Geophysics,54(6):1490-1500.(in Chinese)
易桂喜,闻学泽,辛华,等.2013.龙门山断裂带南段应力状态与强震危险性研究[J].地球物理学报,56(4):1112-1120.
Yi G X,Wen X Z,Xin H,et al.2013.Stress state and major-earthquake risk on the southern segment of the Longmenshan fault zone[J].Chinese Journal of Geophysics,56(4):1112-1120.(in Chinese)
曾宪伟,龙锋,任家琪,等.2020.2019年6月17日长宁M_S6.0地震前后b值时空变化分析[J].地震,40(3):14.
Zeng X W,Long F,Ren J Q,et al.2020.Spatial and temporal variation of b value before and after the Changning M_S6.0 Earthquake on June 17,2019[J].Earthquake,40(3):1-14.(in Chinese)
张正帅,夏彩韵,郑建常,等.2020.利用SH波对盖州震群震源谱参数的稳健反演研究[J].地球物理学进展,35(6):2143-2152.
Zhang Z S,Xia C Y,Zheng J C,et al.2020.Robust inversion of seismic-source spectral parameters for Gaizhou swarm based on SH-component[J].Progress in Geophysics,35(6):2143-2152.(in Chinese)
张正帅,周晨,郑建常,等.2022.长岛震群震源谱参数反演和震源参数特征[J].地震,42(1):85-98.
Zhang Z S,Zhou C,Zheng J C,et al.2022.Inversion of seismic-source spectral parameters and characteristics of the source parameters for the Changdao swarm[J].Earthquake,42(1):85-98.(in Chinese)
赵翠萍,陈章立,华卫,等.2011.中国大陆主要地震活动区中小地震震源参数研究[J].地球物理学报,54(6):1478-1489.
Zhao C P,Chen Z L,Hua W,et al.2011.Study on source parameters of small to moderate earthquakes in the main seismic active regions,China mainland[J].Chinese Journal of Geophysics,54(6):1478-1489.(in Chinese)
郑建常,王鹏,徐长朋,等.2016.乳山震群震源谱参数的稳健反演[J].地球物理学报,59(11):4100-4112.
Zheng J C,Wang P,Xu C P,et al.2016.Robust inversion of seismic-source spectral parameters for the 2013-2015 Rushan swarm[J].Chinese Journal of Geophysics,59(11):4100-4112.(in Chinese)
Baltay A S,Hanks T C,Beroza G C.2013.Stable stress-drop measurements and their variability:implications for ground-motion prediction[J].Bulletin of the Seismological Society of America,103(1):211-222.
Boore D M.1983.Stochastic simulation of gigh-frequency ground motions based on seismological models of the radiated[J].Bulletin of the Seismological Society of America,73(6):1865-1894.
Drouet S,Souriau A,Cotton F.2005.Attenuation,seismic moments,and site effects for weak-motion events:application to the Pyrenees[J].Bulletin of the Seismological Society of America,95(5):1731-1748.
Izutani Y.2008.Radiated energy from the Noto Hanto,Japan,earthquake of March 25,2007,and its aftershock[J].Earth,Planets and Space,60(2):145-150.
Scholz C H.1968.The frequency-magnitude relation of microfracturing in rock and its relation to earthquakes[J].Bulletin of the Seismological Society of America,58(1):399-415.
Wyss M,Brune J N.1968.Seismic moment,stress,and source dimensions for earthquakes in the California‐Nevada region[J].Journal of Geophysical Research,73(14):4681-4694.

备注/Memo

备注/Memo:

收稿日期:2024-04-18.
基金项目:中国地震局监测、预报、科研三结合课题(3JH-202402033); 山东省地震局合同制项目(YB2430).
第一作者简介:陈亚红(1975-),高级工程师,主要从事地震波理论及应用研究.E-mail:Lcyh_1975@163.com.
通信作者简介:廖发圣(1996-),助理工程师,主要从事GNSS对流层模型构建和地震监测预报方面的研究.E-mail:lfs970715@163.com.

常用功能

更新日期/Last Update: 2025-03-10