内蒙古自治区中西部Lg波衰减及场地响应特征研究

doi:10.12196/j.issn.1000-3274.2024.01.008

Abstract

Abstract: Based on the joint inversion method of Lg spectral ratio and station site response, 78 M_L≥2.8 seismic events recorded by seismic network in Inner Mongolia and neighboring provinces during 2016—2020 were selected to carry out seismic wave attenuation and site response analysis in central and western of Inner Mongolia. The results showed that the three-component decay parameters were respectively: QUD(f)=372·f0.54, QEW(f)=287·f0.59, QNS(f)=382·f0.43. By analyzing the response of 34 stations, we found that EKH, BYT and HYS stations had obvious amplification in 1~7 Hz research frequency band, while BHS, XLT and RLT stations had obvious amplification in 1~3 Hz low frequency band, which might be related to the complex geological structure where the stations were located.

Key words: Western region of Inner Mongolia, Lg wave, Attenuation parameter, Site response

CLC Number:

P315.7

JIA Xin-ye, BAI Shao-qi, JIA Yan-jie, LIU Fang, NA Re. Study on Lg Wave Attenuation and Site Response Characteristics in Central and Western of Inner Mongolia, China[J]. EARTHQUAKE, 2024, 44(1): 109-117.

References

[1] Sato H, Fehler M C, Maeda T. Seismic wave propagation and scattering in the heterogeneous earth[M]. Berlin: Springer Verlag, 1997.
[2] 邵媛媛, 郑勇, 王亮, 等. 辽宁地区Lg波衰减及场地响应特征[J]. 地震研究, 2020, 43(1): 19-27.
SHAO Yuan-yuan, ZHENG Yong, WANG Liang, et al. Lg-wave attenuation and site response in the Liaoning Region[J]. Journal of Seismological Research, 2020, 43(1): 19-27 (in Chinese).
[3] Benz H M, Frankel A, Boore D M. Regional Lg attenuation for the continental United States[J]. Bulletin of the Seismological Society of America, 1997, 87(3): 606-619.
[4] Erickson D, McNamara D E, Benz H M. Frequency-dependent Lg Q within the continental United States[J]. Bulletin of the Seismological Society of America, 2004, 94(5): 1630-1643.
[5] Chun K Y, West G F, Kokoski R J, et al. A novel technique for measuring Lg attenuation: Results from eastern Canada between 1 to 10 Hz[J]. Bulletin of the Seismological Society of America, 1987, 77(2): 398-419.
[6] Chun K Y, Wu Y, Henderson G A. Lg attenuation near the North Korean border with China, Part Ⅰ: Model development from regional earthquake sources[J]. Bulletin of the Seismological Society of America, 2009, 99(5): 3021-3029.
[7] Chung T W, Noh M H, Kim J K, et al. A study of the region variation of low-frequency Q-1_Lg around the Korean Peninsula[J]. Bulletin of the Seismological Society of America, 2007, 97(6): 2190-2197.
[8] 赵卫明, 刘秀景, 马禾青. 宁夏及邻区尾波Q值分布特征[J]. 华南地震, 2002, 22(1): 23-27.
ZHAO Wei-ming, LIU Xiu-jing, MA He-qing. The distributing characters of coda wave Q value in Ningxia and its adjacent region[J]. South China Journal of Seismology, 2002, 22(1): 23-27 (in Chinese).
[9] 师海阔, 朱新运, 贺永忠, 等. 利用Sato模型对宁夏及邻区尾波Q值的研究[J]. 地震, 2011, 31(1): 118-126.
SHI Hai-kuo, ZHU Xin-yun, HE Yong-zhong, et al. Q values of seismic coda in Ningxia and adjacent regions based on Sato model[J]. Earthquake, 2011, 31(1): 118-126 (in Chinese).
[10] 师海阔, 曾宪伟, 张立恒, 等. 利用Aki模型对宁夏及邻区尾波Q值分布特征的研究[J]. 地震工程学报, 2016, 38(1): 51-57.
SHI Hai-kuo, ZENG Xian-wei, ZHANG Li-heng, et al. Distribution characteristics of Q value of seismic coda in Ningxia and neighboring areas based on Aki model[J]. China Earthquake Engineering Journal, 2016, 38(1): 51-57 (in Chinese).
[11] 朱新运. 衰减、场地响应等地震波传播相关信息综合研究[D]. 北京: 中国地震局地球物理研究所, 2011.
ZHU Xin-yun. Comprehensive research on seismic wave propagation related information such as attenuation and site response[D]. Beijing: Institute of Geophysics, China Earthquake Administration, 2011 (in Chinese).
[12] 苏有锦. 云南地区地震波衰减(Q值)结构反演成像研究[D]. 合肥: 中国科学技术大学, 2009.
SU You-jin. Inversion tomography of the seismic wave attenuation (Q value) structure in Yunnan region[D]. Hefei: University of Science and Technology of China, 2009 (in Chinese).
[13] 马云生, 张天中, 张焕生. 北京及其周围地区尾波Q值分布特征的研究[J]. 地震学报, 1995, 17(4): 448-458.
MA Yun-sheng, ZHANG Tian-zhong, ZHANG Huan-sheng. Study on the distribution characteristics of Q values of Lg waves in Beijing and its surrounding areas[J]. Acta Seismologica Sinica, 1995, 17(4): 448-458 (in Chinese).
[14] 朱新运, 张帆. 浙江及邻区尾波Q值研究[J]. 西北地震学报, 2006, 28(2): 108-113.
ZHU Xin-yun, ZHANG Fan. Research on coda Q value in Zhejiang Province and neighboring areas[J]. Northwestern Seismological Journal, 2006, 2(2): 108-113 (in Chinese).
[15] 刘芳, 苗春兰, 高艳玲. 内蒙古中西部地区尾波Q值研究[J]. 地震, 2007, 27(2): 72-80.
LIU Fang, MIAO Chun-lan, GAO Yan-ling. Study of code Q value in Midwest region of Inner Mongolia[J]. Earthquake, 2007, 27(2): 72-80 (in Chinese).
[16] 孙业君, 黄耘, 王斌, 等. 江苏地区尾波Q值特征研究[J]. 地震, 2014, 34(1): 24-33.
SUN YE-jun, HUANG Yun, WANG Bin, et al. Characteristics of coda wave Q value in Jiangsu aera[J]. Earthquake, 2014, 34(1): 24-33 (in Chinese).
[17] 朱新运, 陈运泰. 用Lg波资料反演场地效应与地震波衰减参数[J]. 地震学报, 2007, 29(6): 569-580.
ZHU Xin-yun, CHEN Yun-tai. An Inversion of site response and Lg attenuation using Lg waveform[J]. Acta Seismologica Sinica, 2007, 29(6): 569-580 (in Chinese).
[18] Zhu X Y, Chen Y T. An inversion of Lg-wave attenuation and site response in the North China region[J]. Bulletin of the Seismological Society of America, 2012, 102(6): 2600-2610.
[19] Zhu X Y. An inversion of Lg-wave attenuation and site response from seismic spectral ratios in the eastern China region[J]. Bulletin of the Seismological Society of America, 2014, 104(3): 1389-1399.
[20] 朱新运. 华北盆地Lg波衰减及台站场地响应特征[J]. 地球科学, 2016, 41(12): 2109-2117.
ZHU Xin-yun. Characteristics Lg wave attenuation and site response in the North China Basin[J]. Earth Science, 2016, 41(12): 2109-2117 (in Chinese).
[21] 刘红桂, 周红晖, 陈书清, 等. 鄂尔多斯块体Lg尾波衰减及其分布图像[J]. 地球物理学进展, 2008, 23(2): 351-358.
LIU Hong-gui, ZHOU Hong-hui, CHEN Shu-qing, et al. Lg coda attenuation and its distribution image beneath Ordos Massif[J]. Progress in Geophysics, 2008, 23(2): 351-358 (in Chinese).
[22] Shih X R, Chun K Y, Zhu T. Attenuation of 1-6 s Lg waves in Eurasia[J]. Journal of Geophysical Research: Solid Earth, 1994, 99(B12): 23859-23874.
[23] Sereno T J, Bratt S R, Bache T C. Simultaneous inversion of regional wave spectra for attenuation and seismic moment in Scandinavia[J]. Journal of Geophysical Research: Solid Earth, 1988, 93(B3): 2019-2035.
[24] 王鑫, 尹战军, 郝美仙, 等. 内蒙古地区场地响应区域特征分析[J]. 震灾防御技术, 2015, 10(1): 163-172.
WANG Xin, YIN Zhan-jun, HAO Mei-xian, et al. Regional characteristic analysis on site response of digital stations in Inner Mongolia[J]. Technology for Earthquake Disaster Prevention, 2015, 10(1): 163-172 (in Chinese).

Study on Lg Wave Attenuation and Site Response Characteristics in Central and Western of Inner Mongolia, China

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Recommended Articles

Metrics

Comments

[1]	LIU Jian-ming, LI Zhi-hai. Non-elastic Attenuation, Site Response and Source Parameters in the Northern Tianshan Mountain, Xinjiang of China [J]. EARTHQUAKE, 2014, 34(1): 77-86.
[2]	HUA Wei, CHEN Zhang-li, ZHENG Si-hua. Estimation of Site Responses for Temporary Stations Using Various Methods [J]. EARTHQUAKE, 2010, 30(3): 30-44.
[3]	LIU Hong-gui, MIAO Fa-jun, WU Jing. Simultaneous inversion of site response, source parameters, geometrical attenuation factors and inelastic coefficient of medium [J]. EARTHQUAKE, 2004, 24(4): 27-36.