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Guangxi Longtan Reservoir Earthquakes S-Wave Splitting

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Geo-Spatial Knowledge and Intelligence (GRMSE 2016)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 698))

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Abstract

In order to understand and grasp the anisotropic characteristics of crustal media in 12 fixed seismic stations of Longtan Reservoir Digital Telemetry Seismic Network (LRDTSN) from impoundment in October 2006 to July 2013, on the basis of precise positioning of seismic events in Longtan Reservoir, using SAM comprehensive splitting analysis method, which contained correlation function calculation, time delay correction and polarization analysis and test, the effective dominant shear-wave polarization direction and delay time (shear-wave splitting parameters) in 9 fixed stations of LRDTSN were calculated. Analysis showed that under the influence and control of principal compressive stress and regional faults in the South China Block, fast shear-wave polarization directions in stations of LRDTSN had obvious local characteristics. The principal compressive stress directions within the scope of Longtan Reservoir included the dominant polarization directions of NW and NNE. Under the impact of loading and unloading water during impoundment of Longtan Reservoir, the spatial distribution of slow shear-wave normalized delay time was uneven, high in the northwest of dam area and slightly high in the periphery of dam area. Meanwhile, shear-wave splitting parameters in some stations had certain correspondence with the water level of reservoir.

Fund Project: This work was supported by the science-technology plan of Guangxi (Project number: 1377002, 1598017-11, 14124004-4-8).

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Authors and Affiliations

  1. Earthquake Administration of Guangxi Zhuang Autonomous Region, Nanning, 530022, China

    Lijuan Lu, Bin Zhou, Xiang Wen, Shuiping Shi, Chunheng Yan, Sha Li & Peilan Guo

  2. Institute of Geophysics, Chinese Earthquake Administration, Beijing, 100081, China

    Bin Zhou

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  1. Lijuan Lu
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  2. Bin Zhou
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  3. Xiang Wen
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  4. Shuiping Shi
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  5. Chunheng Yan
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  6. Sha Li
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  7. Peilan Guo
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Correspondence to Bin Zhou .

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Editors and Affiliations

  1. Beijing Institute of Technology, Beijing, China

    Hanning Yuan

  2. Beijing Institute of Technology, Beijing, China

    Jing Geng

  3. Wuhan University, Wuhan, China

    Fuling Bian

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Lu, L. et al. (2017). Guangxi Longtan Reservoir Earthquakes S-Wave Splitting. In: Yuan, H., Geng, J., Bian, F. (eds) Geo-Spatial Knowledge and Intelligence. GRMSE 2016. Communications in Computer and Information Science, vol 698. Springer, Singapore. https://doi.org/10.1007/978-981-10-3966-9_54

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  • DOI: https://doi.org/10.1007/978-981-10-3966-9_54

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-3965-2

  • Online ISBN: 978-981-10-3966-9

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