ANALYSIS ON THE CHARACTERISTICS OF DURATION AND PERIOD OF GROUND MOTION OF THE LUSHAN EARTHQUAKE BASED ON THE STATION RECORDS

doi:10.3969/j.issn.0253-4967.2017.01.007

Abstract

Abstract:

Based on 60 records from the 20 stations within 100km to the epicenter of Lushan earthquake, the predominant period, period of peak response spectrum, duration of ground motion, and source duration are investigated. By the study, we conclude that within 100km to the epicenter, the scope of predominant period is 0.013~0. 275s in EW, NS and UD direction; the scope of period of peak response spectrum for 5% damping ratio is 0.03~0.65s; the scope of 90% ground motion durations is 5. 1~35. 9s; the scope of averaging source duration is 6.41 (EW), 6.05 (NS) and 5.47s (UD). Furthermore, based on the ground motion duration calculated by 20 stations dada, the predictive curve and equation of ground motion duration is regressed and compared with the recent equation of ground motion duration by Bommer (2009). We find that the ground motion durations of most stations are larger than predictively mean value by Bommer (2009), which means that the source effect of Lushan earthquake is relatively larger. Lastly, by the contour figure of ground motion duration and source duration, we conclude that the directivity character of duration is relatively apparent in NE direction. The relatively larger source duration and ground motion duration in NE direction indicate more energy release in the main shock of Lushan earthquake, which perhaps causes the relatively less aftershocks in this direction. The duration has no hanging wall effect, which perhaps results from the blind-reverse fault structure of Lushan earthquake.

Key words: Lushan earthquake, response spectrum, predominant period, ground motion duration, source duration

摘要：

以芦山地震震中距100km内的20个台站60条原始强震记录为依据，研究芦山地震动卓越周期、反应谱峰值周期、地震动持续时间和震源持续时间。研究发现：EW、SN和UD3个方向卓越周期的变化范围为0.013~0.275s；5%阻尼比反应谱峰值周期变化范围为0.03~0.65s；芦山地震动90%持续时间变化范围为5.1~35.9s，震源持续时间在EW、SN和UD 3个方向的均值分别约为6.41s、6.05s和5.47s。以台站地震动持时为依据，回归地震动持续时间的空间变化曲线，并与Bommer（2009）地震动持时预测曲线进行比较，发现芦山地震动持续时间高于Bommer（2009）预测曲线，表明芦山地震中的震源作用时间大于目前的预测平均值。芦山地震动持时和震源持续时间在NE向有较明显的方向性，尤其是震源持续时间；而该方向上的余震分布弱于震中SW方向，表明发震构造在主震发生过程中NE方向能量释放较多，所以余震分布较弱。地震动持时和震源持时无上盘效应可能与隐伏发震构造相关。

关键词: 芦山地震, 反应谱, 卓越周期, 地震动持续时间, 震源持续时间

CLC Number:

P315.63

BAI Yu-zhu, XU Xi-wei. ANALYSIS ON THE CHARACTERISTICS OF DURATION AND PERIOD OF GROUND MOTION OF THE LUSHAN EARTHQUAKE BASED ON THE STATION RECORDS[J]. SEISMOLOGY AND GEOLOGY, 2017, 39(1): 92-103.

白玉柱, 徐锡伟. 由强震动数据分析芦山地震地面运动持时及周期特征[J]. 地震地质, 2017, 39(1): 92-103.

References

陈鲲, 俞言祥, 高孟潭, 等. 2013. 利用强震记录校正的芦山7.0级地震峰值加速度震动图［J］. 地震地质, 35(3): 627-633. doi: 10.3969/j.issn.0253-4967.2013.03.016.
CHEN Kun, YU Yan-xiang, GAO Meng-tan,et al. 2013. Shakemap of peak ground acceleration with bias correction for the Lushan, Sichuan earthquake on April 20, 2013［J］. Seismology and Geology, 35(3): 627-633(in Chinese).
大崎顺彦. 2008. 地震动的谱分析入门［M］. 田琪, 译. 2版. 北京: 地震出版社.
Osaki Yorihiko. 2008. Introduction to Spectrum Analysis of Strong Ground Motion［M］. Tian Qi, Transl. 2nd ed. Seismological Press, Beijing(in Chinese).
冯蔚, 姜立新, 杨天青, 等. 2014. 芦山7.0级地震强震台仪器烈度与调查点烈度的对比分析［J］. 地震地质, 36(1): 222-229. doi: 10.3969/j.issn.0253-4967.2014.01.018.
FENG Wei, JIANG Li-xin, YANG Tian-qing,et al. 2014. A comparative analysis between instrumental intensity and survey spot intensity of LushanM7.0 earthquake［J］. Seismology and Geology, 36(1): 222-229(in Chinese).
胡聿贤. 2006. 地震工程学［M］. 北京: 地震出版社.
HU Yu-xian. 2006. Earthquake Engineering［M］. Seismological Press, Beijing(in Chinese).
刘成利, 郑勇, 葛粲, 等. 2013. 2013年芦山7.0级地震的动态破裂过程［J］. 中国科学(D辑), 43(6): 1020-2026.
LIU Cheng-li, ZHENG Yong, GE Can,et al. 2013. Rupture process of theM_S7.0 Lushan earthquake, 2013［J］. Science China(Ser D), 26(7): 1187-1192.
卢书楠, 翟长海, 谢礼立. 2013. 汶川地震中强震持时的特征研究［J］. 地震工程与工程振动, 33(2): 1-7.
LU Shu-nan, ZHAI Chang-hai, XIE Li-li. 2013. Characteristics of duration of ground motion during the Wenchuan earthquake［J］. Journal of Earthquake Engineering and Engineering Vibration, 33(2): 1-7(in Chinese).
任叶飞, 温瑞智, 周宝峰, 等. 2014. 2013年4月20日四川芦山地震强地面运动三要素特征分析［J］. 地球物理学报, 57(6): 1836-1846.
REN Ye-fei, WEN Rui-zhi ZHOU Bao-feng,et al. 2014. The characteristics of strong ground motion of Lushan earthquake on April 20, 2013［J］. Chinese Journal of Geophysics, 57(6): 1836-1846(in Chinese).
万秀红, 石玉成, 卢育霞, 等. 2013. 芦山7.0级地震加速度动态变化及烈度分布特征研究［J］. 地震工程学报, 35(4): 900-907.
WAN Xiu-hong, SHI Yu-cheng, LU Yu-xia,et al. 2013. Research on the dynamic change of acceleration and seismic intensity distribution of the LushanM_S7.0 earthquake［J］. China Earthquake Engineering Journal, 35(4): 900-907(in Chinese).
王卫民, 郝金来, 姚振兴. 2013. 2013年4月20日四川芦山地震震源破裂过程反演初步结果［J］. 地球物理学报, 56(4): 1412-1417.
WANG Wei-min, HAO Jin-lai, YAO Zhen-xing. 2013. Preliminary result for rupture process of Apr. 20, 2013, Lushan earthquake, Sichuan, China［J］. Chinese Journal of Geophysics, 56(4): 1412-1417(in Chinese).
温瑞智, 任叶飞, 黄旭涛, 等. 2013. 芦山7.0级地震强震动记录及其震害相关性［J］. 地震工程与工程振动, 33(4): 1-14.
WEN Rui-zhi, REN Ye-fei, HUANG Xu-tao,et al. 2013. Strong motion records and their engineering damage implications for Lushan earthquake on April 20, 2013［J］. Journal of Earthquake Engineering and Engineering Vibration, 33(4): 1-14(in Chinese).
徐锡伟, 陈桂华, 于贵华, 等. 2013. 芦山地震发震构造及其与汶川地震关系讨论［J］. 地学前缘, 20(3): 11-20.
XU Xi-wei, CHEN Gui-hua, YU Gui-hua,et al. 2013. Seismogenic structure of Lushan earthquake and its relationship with Wenchuan earthquake［J］. Earth Science Frontiers, 20(3): 11-20(in Chinese).
喻畑, 赵亚敏, 陆鸣. 2014. 芦山地震地震动上下盘效应研究［J］. 震灾防御技术, 9(3): 431-438.
YU Tian, ZHAO Ya-min, LU Ming. 2014. Study of hanging-wall effect of fault in Lushan earthquake［J］. Technology for Earthquake Disaster Prevention, 9(3): 431-438(in Chinese).
赵旭, 黄志斌, 房立华, 等. 2014. 四川芦山M_S7.0强烈地震震源运动学特征［J］. 地球物理学报, 57(2): 419-429.
ZHAO Xu, HUANG Zhi-bin, FANG Li-hua,et al. 2014. Kinematic characteristics of the source process of the Lushan, SichuanM_S7.0 earthquake on 20 April 2013［J］. Chinese Journal of Geophysics, 57(2): 419-429(in Chinese).
Andrews D J. 1986. Objective determination of source parameters and similarity of earthquakes of different size［M］//Das S, Boatwright J, Scholtz C H, eds. Earthquake Source Mechanics. American Geophysical Union, Washington, DC, 6: 289-267.
Bindi D, Luzi L, Massa M,et al. 2010. Horizontal and vertical ground motion prediction equations derived from the Italian accelerometric archive(ITACA)［J］. Bulletin of Earthquake Engineering, 8(5): 1209-1230.
Bommer J J, Stafford P J, Alarcon J E. 2009. Empirical equations for the prediction of the significant, bracketed, and uniform duration of earthquake ground motion［J］. Bulletin of the Seismological Society of America, 99(6): 3217-3233.
Boore D M. 1983. Stochastic simulation of high-frequency ground motions based on seismological models of the radiated spectra［J］. Bulletin of the Seismological Society of America, 73(6A): 1865-1894.
Boore D M. 2001. Effect of baseline corrections on displacements and response spectra for several recordings of the 1999 Chi-Chi, Taiwan, Earthquake［J］. Bulletin of the Seismological Society of America, 91(5): 1199-1211.
Boore D M. 2005. On pads and filters: Processing strong-motion data［J］. Bulletin of the Seismological Society of America, 95(2): 745-750.
Cesca S, Heimann S, Dahm T. 2011. Rapid directivity detection by azimuthal amplitude spectra inversion［J］. Journal of Seismology, 15(1): 147-164.
Hancock J, Eeri M, Hanks T C, Bommer J J,et al. 2006. A state-of-knowledge review of the influence of strong-motion duration on structural damage［J］. Earthquake Spectra, 22(3): 827-845.
Husid R L. 1969. Análisis de terremotos, análisis general, revista del IDIEM［J］. Santiago, Chile, 8(1):21-42(in Portuguese).
Joyner W B, Boore D M. 1993. Methods for regression analysis of strong-motion data［J］. Bulletin of the Seismological Society of America, 83(2): 469-487.

[1]	SONG Cheng-ke, ZHANG Hai-yang. ANALYSIS OF COSEISMIC VARIATIONS IN MAGNETIC FIELD OF THE LUSHAN M_S7.0 EARTHQUAKE IN 2013 [J]. SEISMOLOGY AND GEOLOGY, 2020, 42(6): 1301-1315.
[2]	XU Zhi-ping, WANG Fu-yun, JIANG Lei, ZHAO Yan-na, YANG Li-pu, TANG Lin. THE THREE DIMENSIONAL DENSITY STRUCTURE OF CRUST AND UPPER MANTLE IN THE CENTRAL-SOUTHERN PART OF LONGMENSHAN [J]. SEISMOLOGY AND GEOLOGY, 2019, 41(1): 84-98.
[3]	WANG Heng-zhi, YU Yan-xiang, HE Bin, PENG Xiao-bo, ZHAN Xiao-yan, ZHU Sheng-chu. GROUND MOTION CHARACTERISTICS OF GAOYOU-BAOYING M4.9 EARTHQUAKE [J]. SEISMOLOGY AND GEOLOGY, 2018, 40(6): 1349-1361.
[4]	ZENG Di, CHEN Li-chun, CHEN Shun-yun, LI Dong-yu. REANALYSIS OF BEDROCK GROUND TEMPERATURE CHANGES PRIOR TO 2013 LUSHAN M_S7.0 EARTHQUAKE [J]. SEISMOLOGY AND GEOLOGY, 2017, 39(5): 994-1006.
[5]	CHANG Liu, YANG Bo, ZHANG Feng-shuang, XU Ming-yuan, YANG Guo-hua. GPS AND LEVELING CONSTRAINED CO-SEISMIC SOURCE AND SLIP DISTRIBUTION OF THE LUSHAN M_S7.0 EARTHQUAKE ON 20 APRIL 2013 [J]. SEISMOLOGY AND GEOLOGY, 2017, 39(3): 561-571.
[6]	WANG Lin, ZHOU Qing-yun, WANG Jun, LI Wen-qiao, ZHOU Lian-qing, CHEN Han-lin, SU Peng, LIANG Peng. THE RESEARCH OF THE SEISMOGENIC STRUCTURE OF THE LUSHAN EARTHQUAKE BASED ON THE SYNTHESIS OF THE DEEP SEISMIC DATA AND THE SURFACE TECTONIC DEFORMATION [J]. SEISMOLOGY AND GEOLOGY, 2016, 38(2): 458-476.
[7]	ZHANG Zhi-wei, ZHOU Long-quan, LONG Feng, RUAN Xiang. SPATIAL AND TEMPORAL CHARACTERISTIC OF STRESS FIELD FOR WENCHUAN M_S8.0 AND LUSHAN M_S7.0 EARTHQUAKE SEQUENCE [J]. SEISMOLOGY AND GEOLOGY, 2015, 37(3): 804-817.
[8]	LIU Li-na, XU Chong, CHEN Jian. DEBRIS-FLOW HAZARD EVALUATION BASED ON GEOMORPHIC INFORMATION ENTROPY AND LANDSLIDE MATERIALS IN THE LUSHAN EARTHQUAKE AFFECTED AREA [J]. SEISMOLOGY AND GEOLOGY, 2015, 37(3): 880-892.
[9]	XIE Tao, ZHENG Xiao-dong, KANG Chun-li, MA Wei-yu, LU Jun. POSSIBLE THERMAL BRIGHTNESS TEMPERATURE ANOMALIES ASSOCIATED WITH THE LUSHAN(CHINA) M7.0 EARTHQUAKE ON 20 APRIL 2013 [J]. SEISMOLOGY AND GEOLOGY, 2015, 37(1): 149-161.
[10]	YU Lu, SHAN Xin-jian, CHEN Xiao-li. A FAST CLASSIFICATION FOR LUSHAN EARTHQUAKE-INDUCED LANDSLIDE HAZARD ZONES BASED ON COMPREHENSIVE INDEXES METHOD [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(4): 1106-1115.
[11]	SU Qin, YANG Yong-lin, ZHENG Bing, WANG Shuang-hong, LI Fei-fei, LIU Guan-zhong. A REVIEW OF THE THINKING AND PROCESS ABOUT PREDICTION OF LUSHAN M7.0 EARTHQUAKE ON APR. 20, 2013 [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(4): 1077-1093.
[12]	YANG Zhu-zhuan, DENG Zhi-hui, YANG Xian-he, TAO Jing-ling. COMPARISON AND ANALYSIS OF WELL WATER-LEVEL VARIATIONS CAUSED BY LUSAN M_S 7.0 EARTHQUAKE IN 2013 AND WENCHUAN M_S 8.0 EARTHQUAKE IN 2008 [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(2): 380-391.
[13]	ZHOU Qing, JIANG Ya-feng, WU Guo, CHEN Guo-guang. DISTRIBUTION OF COSEISMIC LANDSLIDES IN LUSHAN EARTHQUAKE AND DISCUSSION ON RELATED PROBLEMS [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(2): 344-357.
[14]	WEI Wen-xin, JIANG Zai-sen, ZOU Zhen-yu, YANG Yong-lin, ZHANG Long, WU Yan-qiang. VERIFICATION RESEARCH ON THE COSEISMIC DISPLACEMENT OF THE APRIL 20, 2013, M7.0 LUSHAN EARTHQUAKE AND PRIMARY EXPLORATION OF SURFACE DEFORMATION MODE [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(2): 333-343.
[15]	WANG Li-feng, ZHAO Guo-ze, ZHAN Yan, CHEN Xiao-bin, XIAO Qi-bin, ZHAO Ling-qiang, WANG Ji-jun, QIAO Liang, HAN Bing. ELECTRIC STRUCTURE OF CRUST BENEATH THE SOUTH- WESTERN SEGMENT OF THE LONGMENSHAN FAULT ZONE [J]. SEISMOLOGY AND GEOLOGY, 2014, 36(2): 302-311.