[1]查小惠,赵 影,曾文敬,等.基于谐波分解的余干地震台接收函数研究[J].华南地震,2020,40(03):27-33.[doi:10.13512/j.hndz.2020.03.04]
　ZHA Xiaohui,ZHAO Ying,ZENG Wenjing,et al.Study on Receiver Functions of Yugan Seismic Station Based On Harmonic Decomposition[J].SOUTH CHINA JOURNAL OF SEISMOLOGY,2020,40(03):27-33.[doi:10.13512/j.hndz.2020.03.04]
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基于谐波分解的余干地震台接收函数研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年03期
页码:
27-33
栏目:
地震科学研究
出版日期:
2020-09-30

文章信息/Info

Title:
Study on Receiver Functions of Yugan Seismic Station Based On Harmonic Decomposition
作者:
查小惠 ;  赵 影 ;  曾文敬 ;  罗 丽 ;  郭雨帆
（江西省地震局 , 南昌 330026）
Author(s):
ZHA Xiaohui; ZHAO Ying; ZENG Wenjing; LUO Li; GUO Yufan
(Jiangxi Earthquake Agency,Nanchang 330026, China)
关键词:
接收函数; 谐波分解; 各向异性
Keywords:
ReceiverfunctionHarmonicdecompositionAnisotropy
分类号:
P315
DOI:
10.13512/j.hndz.2020.03.04
文献标志码:
A
摘要:
基于各向异性介质下 Pms 震相到时的理论公式和理论地层模型 , 验证了谐波分解方法求取地壳各向异 性参数的可行性和可靠性。将该方法应用到余干地震台 , 发现余干地震台不同方位角接收函数 Pms 震相存在 明显的到时差 , 谐波分解结果表明台站下方各向异性快波方向约为 83°, 时间延迟约为 0.28 s。快波方向和前 人研究余干台的SKS 分裂结果较为一致 , 支持华南地区壳幔耦合变形的观点。水平轴各向异性模型参数只 能部分解释 Pms 到时差异 , 完整的解释需要进一步考虑界面倾斜和倾斜轴各向异性等情况。
Abstract:
Based on the theoretical formula of the arrival time of the seismic phase of Pms in anisotropic medium and the theoretical stratigraphic model,the feasibility and reliability of the harmonic decomposition method to obtain the anisotropic parameters of the crust are verified. Applying this method to Yugan seismic station,it is found that there is obvious arrival time difference in different azimuth receiver functions of Pms phase in Yugan seismic station. The results of harmonic decomposition show that the direction of anisotropic fast wave under the station is about 83 ° and the time delay is about 0.28 s. The direction of the fast wave is consistent with the SKS splitting results of previous studies, which supports the viewpoint of crust mantle coupling deformation in South China. The parameters of horizontal axis anisotropic model can only partially explain the time difference of Pms, and the complete interpretation needs to further consider the interface tilt and tilt axis anisotropy.

相似文献/References:

[1]卢进延.珠江三角洲芦苞—佛山—中山—三乡断面的地壳结构——密集台阵勘探新成果[J].华南地震,2021,41(04):1.[doi:10.13512/j.hndz.2021.04.01]
　Geophysical Exploration Brigade of Guangdong Province.Crustal Structure of the Lubao-Foshan-Zhongshan-Sanxiang Section in the Pearl River Delta——New Exploration Results of Intensive Array Exploration LU Jinyan[J].SOUTH CHINA JOURNAL OF SEISMOLOGY,2021,41(03):1.[doi:10.13512/j.hndz.2021.04.01]

备注/Memo

备注/Memo:
收稿日期: 2019-12-09 基金项目: 中国地震局地震科技星火计划项目（XH20030Y） 作者简介: 查小惠（1989-）, 男 , 工程师 , 主要从事前兆监测和接收函数方面的研究。 E-mail: zhaxiaohuiouc@163.com
更新日期/Last Update: 2020-10-22