Guo Biao

Guo Biao
Institute of Geology, China Earthquake Administration · Department of Geophysics

About

23
Publications
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416
Citations

Publications

Publications (23)
Article
Full-text available
利用布设在青藏高原东北缘地区的甘肃宽频带地震台阵记录到的远震P波走时数据,采用小波域参数化和 基于 L1范数的稀疏约束反演算法的多尺度层析成像方法,得到了该地区400km 深度范围内上地幔的P波速度结 构.本文采用的多尺度层析成像方法可以自适应数据非均匀采样的情况,有效降低谱泄漏效应和反问题的多解性, 明显提高解的分辨率和可靠性.层析成像结果表明青藏高原东北缘上地幔整体上显示为低速特征,扬子地块上地 幔则显示为高速特征,两者之间上地幔存在清晰的块体边界带,该边界带位于东经104 °—105 °之间并且随深度的 增加逐渐东移.该特征暗示了青藏高原上地幔物质向东扩张的机制,但在西秦岭上地幔顶部不存在物质运移的通 道.青藏高原东北缘内部也具有明显的分区特征,松潘—甘孜地块上地幔P波速度整体呈低速特...
Article
Full-text available
Crustal anisotropy at multiple depths is essential for studying the vertical variation of crustal deformation. Due to the complexity of the crust, mapping the crustal anisotropy at different depth from teleseismic receiver function (RF) is an ongoing subject that requires further studies. Based on the previous works, this paper goes further to disc...
Article
Full-text available
The crustal anisotropy at multiple depths is essential for studying the vertical variations of the crustal deformation. Due to the complexity of the crust, the extraction of the crustal anisotropic parameters at different depth from teleseismic receiver function (RF) is an ongoing subject that requires further studies. Based on the previous works,...
Article
Suppressing the scattering induced by the laterally heterogeneous media is important for imaging the crustal structure and its anisotropy from Receiver Functions (RFs) based on the laterally stratified model. Although the scattering can be suppressed, to some degree, with stacking technique or low-pass filtering, these may lead to undesired wavefor...
Article
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The P-wave anisotropic structures of upper mantle beneath the China mainland and adjacent areas are obtained by using teleseismic P-wave travel time data recorded by 213 permanent seismic stations and the harmonic decomposition analysis of qP velocity pertubation under the condition of weak anisotropy.
Article
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A temporal seismic array consisted of 297 broadband seismographs was deployed in Western Sichuan (100 degrees similar to 105 degrees E, 26 degrees similar to 32 degrees N) in 2006, and the observation covered the great 2008 Wenchuan earthquake. We used the continuous three-component ambient noise data from January, 2007 to October, 2008, recorded a...
Article
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In this study, we present a method for the joint inversion of receiver function and ambient noise based on Bayesian inverse theory (Tarantola, 1987, 2005). In our method, the nonlinear inversion method of the complex spectrum ratio of receiver functions (Liu et al., 1996) has been extended to perform the joint inversion of the receiver function and...
Article
In this study, we present a method for the joint inversion of receiver function and ambient noise based on Bayesian inverse theory (Tarantola, 1987, 2005). The nonlinear inversion method of the complex spectrum ratio of receiver functions (Liu et al., 1996) is extended to perform the joint inversion of the receiver function and ambient noise with a...
Article
Full-text available
In this study, we present a method for the joint inversion of receiver function and ambient noise based on Bayesian inverse theory (Tarantola, 1987, 2005). The nonlinear inversion method of the complex spectrum ratio of receiver functions (Liu et al., 1996) is extended to perform the joint inversion of the receiver function and ambient noise with a...
Article
Full-text available
In this study, in terms of the nonlinear inversion method of receiver functions, we investigated the S-wave velocity structure of the crust and upper mantle beneath the capital circle region from teleseismic broadband waveform data recorded at 40 movable stations deployed over the Tangshan earthquake region in 2002~2003 by the Laboratory of Lithosp...
Article
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The 3D P-wave velocity structure of the crust and upper mantle within the depth range of 400 km was obtained by using teleseismic traveltimes data recorded by West Sichuan Seismic Array distributed in Longmenshan region and non-linear tomography inversion technique. For adapting to the complicated structure, the fast marching traveltime calculation...
Article
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Accurate relocation of the Wenchuan earthquake sequence is obtained by using the double difference relocation algorithm from the integrated travel time data recorded at the Western Sichuan movable seismic array and the earthquake emergency response stations. In this presentation, the seismotectonic deformation and rupture process is also investigat...
Article
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On 12th of May, 2008, a devastating Ms 8.0 event shocking the whole world occurred in the Wenchuan region of Sichuan province. Historically, the same kind of earthquakes is very rare inside of the continent. The study on the tectonic environment of this event is crucial for understanding the genesis of this event. From the teleseismic waveform data...
Article
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Forty moveable broadband stations were layed out by Laboratory of Lithospheric Seismic Array, Institute of Geology, China earthquake Administration. We synthetically using the data of 40 moveable stations and 107 permanent stations of digital network in the Capital Circle, estimate the averaged Poisson’s ratio and crustal thickness beneath the 147...
Article
Full-text available
Forty moveable broadband stations were layed out by Laboratory of Lithospheric Seismic Array, Institute of Geology, China earthquake Administration. We synthetically using the data of 40 moveable stations and 107 permanent stations of digital network in the Capital Circle, estimate the averaged Poisson’s ratio and crustal thickness beneath the 147...
Article
Full-text available
In the western Sichuan (100°~105°E, 26°~32°N), a movable array consisted of 297 broadband seismic stations has been deployed by the State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration since October,2008. Until June of 2008, totally 1599 teleseismic events (Mb﹥5.0, 30°≤ Δ≤ 90°) have been recorded. The 5...
Article
Recent years, many attentions have been paid to the shear wave splitting in the crack medium. In this study is investigated the S-wave splitting at the stations of the Capital Circle from the local event data recorded by the movable and permanent station network. The fast polarization directions at the stations of the Capital Circle have been obtai...
Article
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From April of 2001 to March of 2002, a passive seismic array experiment was carried out in the Dabie Shan and its adjacent region. In this experiment, totally 34 broadband seismic stations were deployed along a profile across the Dabie Shan orogen and North-China platform. This profile is about 500km long from Cuilin (34°40N,114°49E), Henan provi...
Article
Full-text available
We investigate the P-wave velocity structure of the crust and upper mantle down to depth 400km beneath the Ordos region and northeastern Qinghai-Xizang plateau using the seismic tomographic technique. The data used are taken from the record by the regional network and a passive seismic observation profile across the investigated area, respectively....
Article
Full-text available
The newly developed Digital Seismic Network in Capital Circle consists of 107 stations, the seismic monitoring and epicenter determination capabilities of which need to be verified. In epicenter determination, we should bring the superiority of digital seismic record into full play, and improve the reliability and precision of epicenter determinati...
Article
In 1997, 7 strong earthquakes (M > 6.0) occured in Jiashi region, Xinjiang Uygur Autonomous Region. In order to gain an insight into this seldom seen seismic event, a passive broadband seismic array experiment was carried out by the Institute of Geology, China seismological Bureau in 1998. During the experiment two events, the Binamu and Lonkou ear...

Network

Cited By
    • Peking University
    • Institute of Geology, China Earthquake Administration
    • Academy of Precision Measurement Science and Technology-Chinese Academy of Sciences
    • Rensselaer Polytechnic Institute
    • National Institute of Natural Hazards,Ministry of Emergency Management of China

Projects

Project (1)