倾斜界面和各向异性对谐波分解方法的影响研究

doi:10.12196/j.issn.1000-3274.2022.01.007

Abstract

Abstract: The receiver function harmonic decomposition method can extract the inhomogeneous information under the crust, but when many kinds of inhomogeneities exist at the same time, the accuracy of the inversion results of this method is not very clear at present. Based on five groups of 20 theoretical models, the influence of inclined interface and anisotropy on the method of harmonic decomposition is studied. The results show that the harmonic decomposition method can get the model parameters well for the case of inclined interface only. When anisotropy and inclined interface exist at the same time, the existence of anisotropy will affect the amplitude information of inclined interface obtained by harmonic decomposition, and the influence is also related to the direction of inclined interface. The strength of anisotropy obtained by anisotropic harmonic decomposition of tilt axis is related to the dip angle of tilt axis, while the direction of fast axis has little effect. The harmonic decomposition method is used to analyze the Jiujiang station, Jiangxi, China. The results show that dipping interface and anisotropy coexist under the station, the fast axis direction is about 86 ° and the time delay is about 0.46 s.

Key words: Anisotropy, Dipping interface, Harmonic decomposition, Receiver function

CLC Number:

P315.7

ZHA Xiao-hui. Study on the Influence of Inclined Interface and Anisotropy on the Method of Harmonic Decomposition[J]. EARTHQUAKE, 2022, 42(1): 99-110.

References

[1] Owens T J, Zandt G, Taylor S R. Seismic evidence for an ancient rift beneath the Cumberland plateau, Tennessee: A detailed analysis of broadband teleseismic P waveforms[J]. Journal of Geophysical Research: Solid Earth, 1984, 89(B9): 7783-7795.
[2] 徐震, 徐鸣洁, 王良书, 等. 用接收函数Ps转换波研究地壳各向异性以哀牢山—红河断裂带为例[J]. 地球物理学报, 2006, 49(2): 438-448.
XU Zhen, XU Ming-jie, WANG Liang-shu, et al. A study on crustal anisotropy using P to S converted phase of the receiver function: Application to Ailaoshan—Red River fault zone[J]. Chinese Journal of Geophysics, 2006, 49(2): 438-448 (in Chinese).
[3] 强正阳, 吴庆举, 何静, 等. 内蒙古阿巴嘎地区地壳方位各向异性研究[J]. 地球物理学报, 2019, 62(8): 2946-2958.
QIANG Zheng-yang, WU Qing-ju, HE Jing, et al. Crustal azimuthal anisotropy beneath Abag area in Inner Mongolia, China[J]. Chinese Journal of Geophysics, 2019, 62(8): 2946-2958 (in Chinese).
[4] 杨妍, 姚华建, 张萍, 等. 用接收函数方法研究华北克拉通中部造山带及其邻域地壳方位各向异性[J]. 中国科学: 地球科学, 2018, 48(7): 912-923.
YANG Yan, YAO Hua-Jian, ZHANG Ping, et al. Crustal azimuthal anisotropy in the trans-North China orogen and adjacent regions from receiver functions[J]. Science China: Earth Sciences, 2018, 48(7): 912-923 (in Chinese).
[5] 韩明, 李建有, 徐晓雅, 等. 按方位叠加接收函数分析青藏高原东南缘的地壳各向异性[J]. 地球物理学报, 2017, 60(12): 4537-4556.
HAN Ming, LI Jian-you, XU Xiao-ya, et al. Analysis for crustal anisotropy beneath the southeastern margin of Tibet by stacking azimuthal receiver functions[J]. Chinese Journal of Geophysics, 2017, 60(12): 4537-4556 (in Chinese).
[6] Bianchi I, Park J, Piana Agostinetti N, et al. Mapping seismic anisotropy using harmonic decomposition of receiver functions: An application to Northern Apennines, Italy[J]. Journal Geophysical Research, 2010, 115: B12317.
[7] Rümpker G, Kaviani A, Latifi K. Ps-splitting analysis for multilayered anisotropic media by azimuthal stacking and layer stripping[J]. Geophysical Journal International, 2014, 199(1): 146-163.
[8] Liu H F, Niu F L. Estimating crustal seismic anisotropy with a joint analysis of radial and transverse receiver function data[J]. Geophysical Journal International, 2012, 188(1): 144-164.
[9] 王琼, 高原, 钮凤林, 等. 利用接收函数计算地壳各向异性的可靠性分析及倾斜界面的影响[J]. 地震, 2016, 36(2): 14-25.
WANG Qiong, GAO Yuan, NIU Feng-lin, et al. Reliability analysis of crustal anisotropy from receiver functions and effect of dipping interface[J]. Earthquake, 2016, 36(2): 14-25 (in Chinese).
[10] Sun Y, Niu F L, Liu H F, et al. Crustal structure and deformation of the SE Tibetan plateau revealed by receiver function data[J]. Earth and Planetary Science Letters, 2012, 349-350: 186-197.
[11] Frederiksen A W, Bostock M G. Modeling teleseismic waves in dipping anisotropic structure[J]. Geophysical Journal International, 2000, 141(2): 401-412.
[12] 查小惠, 孙长青, 李聪. 倾斜界面和各向异性地层对H-κ搜索结果的影响[J]. 地球物理学进展, 2013, 28(1): 121-131.
ZHA Xiao-hui, SUN Chang-qing, LI Cong. The effects of dipping interface and anisotropic layer on the result of H-κ method[J]. Progress in Geophysics, 2013, 28(1): 121-131 (in Chinese).
[13] Ligorría J P, Ammon C J. Iterative deconvolution and receiver-function estimation[J]. Bulletin of the Seismological Society of America, 1999, 89(5): 1395-1400.
[14] 杨晓瑜. 长江中下游成矿带及邻区上地幔各向异性研究[D]. 北京: 中国地质大学(北京), 2017.
YANG Xiao-yu. The upper mantle anisotropy beneath the middle-lower Yangtze metallogenic belt and adjacent regions[D]. Beijing: China University of Geosciences (Beijing), 2017 (in Chinese).
[15] 石玉燕, 郑斯华, 颜启, 等. 华东地区SKS波分裂研究[J]. 地震, 2012, 32(4): 33-43.
SHI Yu-yan, ZHENG Si-hua, YAN Qi, et al. SKS wave splitting in east China[J]. Earthquake, 2012, 32(4): 33-43 (in Chinese).

Study on the Influence of Inclined Interface and Anisotropy on the Method of Harmonic Decomposition

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	GAO Yuan, LI Xin-yi, LI Shu-yu, XIA Xin-yu, YANG Yi-wen, WANG Qiong. Deep and Shallow Deformation Tectonics of Jishishan M_S6.2 Earthquake on 18 December 2023 in China [J]. EARTHQUAKE, 2024, 44(1): 160-166.
[2]	YANG Wei-jia, ZHOU Yan-jie, JIANG En-yuan, SHI Yu-tao, MA Xiao, HE Xi-jun, HUANG Xue-yuan. Tomographic Study on the Velocity Structures and P-wave Azimuthal Anisotropy of the 2019 Changning M_S6.0 Earthquake Surrounding Area [J]. EARTHQUAKE, 2023, 43(4): 1-20.
[3]	HE Kang, XIE Tao, WANG Yi-kun, LI Jun-hui, ZHENG Hai-gang. Analysis of Earth Resistivity Anomaly at Hefei Seismic Station before the 2011 Anqing M4.8 Earthquake [J]. EARTHQUAKE, 2023, 43(2): 72-84.
[4]	YANG Ye-xin, MENG Guo-jie, WU Wei-wei, LUO Yan, Thant Myo. Characteristics of Deep and Shallow Tectonics Deformation in Southwest Yunnan [J]. EARTHQUAKE, 2023, 43(1): 74-92.
[5]	CHE Zi-qiang, WU Zhong-liang, GAO Yuan. Rayleigh Wave Phase Velocity and Azimuthal Anisotropy across Haiyuan Fault Zone and Its Adjacent Area Derived from Ambient Noise Tomography [J]. EARTHQUAKE, 2023, 43(1): 105-123.
[6]	LI Xin-yan, ZENG Xian-wei, LU Jun, MA He-qing, CUI Jin, WEI Ding-jun. Anomalies of Apparent Resistivity Before the 2015 AlxaZuoqi M_S5.8 Earthquake in Inner Mongolia of China Based on Fault Virtual Dislocation Model [J]. EARTHQUAKE, 2022, 42(2): 89-99.
[7]	LI Ying, GAO Yuan. Basic Characteristics of Tectonics and Seismic Anisotropy in the Southeastern Margin of the Qinghai-Tibet Plateau [J]. EARTHQUAKE, 2021, 41(4): 15-45.
[8]	CHEN Yan-han, WU Qing-ju. P Wave Polarization Analysis on Part CDSN [J]. EARTHQUAKE, 2020, 40(4): 49-62.
[9]	LIU Xi-kang, LI Yuan, DING Zhi-feng, CHANG Li-jun, WANG Yue-dong. A Study on Variation Characteristics of Shear-wave Splitting in the September 7, 2012 Yiliang Earthquake Region [J]. EARTHQUAKE, 2020, 40(1): 73-83.
[10]	WU Peng, JIA Hua, ZHANG Xiao-tao, WANG Xue-fei, LIU Shuang. Characteristics of Crustal Thickness and Velocity Ratio atthe Junction of Shanxi, Hebei and Inner Mongolia [J]. EARTHQUAKE, 2019, 39(4): 63-75.
[11]	YANG Yan-Ming, CHEN Jing, XIONG Feng, ZHANG Yun, MA Yuan, JIA Xin-Ye, JIA Yan-jie. Distribution of Crustal Thickness and Poisson's Ratio beneath the Northern Margin of the Western Part of North China Craton and Adjacent Areas [J]. EARTHQUAKE, 2019, 39(2): 97-109.
[12]	DENG Jia-mei, CHEN Jia, GAO Qiong, ZHANG Hua-ying, WANG Jun, YE Beng, LI Xiao-bin. Crustal Thickness and Poisson’s Ratios beneath the Binchuan Region of Yunnan Province [J]. EARTHQUAKE, 2016, 36(3): 99-108.
[13]	WANG Qiong, GAO Yuan, NIU Feng-lin, CHEN Yun-tai. Reliability Analysis of Crustal Anisotropy from Receiver Functions and Effect of Dipping Interface [J]. EARTHQUAKE, 2016, 36(2): 14-25.
[14]	LIU Geng, GAO Yuan, SHI Yu-tao. Crustal Anisotropy in the Southeast of the Yunnan—Guizhou Plateau, China [J]. EARTHQUAKE, 2015, 35(3): 76-85.
[15]	SHI Yu-tao, LIU Lan-bo, GAO Yuan. Constructing Anisotropic Model from Directional Heterogeneity Distribution [J]. EARTHQUAKE, 2015, 35(2): 1-10.