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Hu J T,Xie J,Wei Z G,Jin C. 2022. Shallow velocity structure and seismogenic environment in the Zigui section of the Three Gorges Reservoir region of China. Acta Seismologica Sinica,44():1−12 doi: 10.11939/jass.20210194
Citation: Hu J T,Xie J,Wei Z G,Jin C. 2022. Shallow velocity structure and seismogenic environment in the Zigui section of the Three Gorges Reservoir region of China. Acta Seismologica Sinica44():1−12 doi: 10.11939/jass.20210194

Shallow velocity structure and seismogenic environment in the Zigui section of the Three Gorges Reservoir region of China

doi: 10.11939/jass.20210194
  • Received Date: 2021-12-27
  • Rev Recd Date: 2022-04-02
  • Available Online: 2022-05-11
  • After the impoundment of the Three Gorges Reservoir in 2003, shallow earthquakes occurred frequently, which had a great impact on local productions and lives. The study of shallow velocity structure is of great significance for shallow seismic disaster assessment and disaster prevention and reduction in Zigui area. In this paper, based on the vertical component continuous waveform records of 24 mobile seismic stations in Zigui area from June to July of 2020, the empirical Green’s functions between stations are obtained by cross-correlating of the ambient seismic noise, the Rayleigh wave group velocity dispersion curves of 0.6−5 s are extracted, and the inversion for the three-dimensional S-wave velocity model is obtained within 6 km near the surface of the region. The results show that the S-wave velocity of Zigui basin and its south adjacent area is significantly lower than that of the eastern fault area, which is consistent with the structural evolution and sedimentary characteristics of different structural blocks in the studied area; an earthquake with MS4.2 occurred on the vertical high-velocity and low-velocity junction area of the study area in 2014. The S-wave velocity decreases obviously near the Yangtze River region in the fault zone, indicating that the Yangtze River water penetrates into the fault area. Therefore, the frequent occurrence of earthquakes in Zigui area is related to the water load and water infiltration of the Three Gorges reservoir.


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  • [1]
    Che Y T,Chen J H,Zhang L F,Yu J Z,Liu C L,Zhang W H. 2009. Study of the reservoir-induced Hujiaping MS4.1 earthquake in the Three Gorges Dam area[J]. Earthquake,29(4):1–13 (in Chinese).
    Chen J H,Wang Q L,Liao W L,Li J G,Zhang L F. 2016. Focal mechanism solutions research of microquake swarm in the northern end of the Xiannushan fault zone[J]. Journal of Geodesy and Geodynamics,36(S1):109–112 (in Chinese).
    Li A R, Zeng X C, Yan Z G. 1996. Engineering Earthquakes in the Eastern Yangtze Gorges Area[M]. Beijing: Seismological Press: 128–135 (in Chinese).
    Li Q,Zhao X,Cai J A,Liu R F. 2011. S-wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent region[J]. Acta Seismologica Sinica,33(1):39–50 (in Chinese).
    Li Q,Zhao X,Cai J A,Liu R F,Long G H,An Y R. 2009. P wave velocity structure of upper and middle crust beneath the Three Gorges reservoir dam and adjacent region[J]. Science in China:Series D,52(4):567–578. doi: 10.1007/s11430-009-0047-6
    Li X Y,Zhu P M,Zhou Q,Peng S B,Liu J P,Liu J. 2014. S-wave velocity structure of upper Crust in Three Gorges reservoir region of the Yangtze River[J]. Earth Science (Journal of China University of Geosciences) ,39(12):1842–1850 (in Chinese). doi: 10.3799/dqkx.2014.167
    Liao W L,Yao Y S,Ding Z F,Zhang L F. 2007. Tomographic imagery of P wave velocity structure in Three Gorges Region[J]. Journal of Geodesy and Geodynamics,27(3):80–84 (in Chinese).
    Ma W T,Xu C P,Li H O,Yuan J L,Xu X W,Zhang X D,Zhang L F. 2010. Intensive observation of reservoir-induced earthquake and preliminary analysis on the causes of earthquakes in three gorges reservoir[J]. Seismology and Geology,32(4):552–563 (in Chinese).
    Meng Q X. 2012. Stability Analysis of Huangtupo Landslide in Three Gorges Reservoir Area under the Action of Scenario Earthquake[D]. Wuhan: Institute of seismology, China Earthquake Administration: 17–18 (in Chinese).
    Song Q W,Yan D P,Jiao S T,Wu K,Dong Z B. 2014. The response of compounding process of Dabashan and Xuefengshan Thrust Belt in J3-K1:The structural styles and formation mechanism of the Zigui Fold Belt,Western Hubei[J]. Acta Geologica Sinica,88(8):1382–1400 (in Chinese).
    Wang Q,Gao Y. 2014. Rayleigh wave phase velocity tomography and strong earthquake activity on the southeastern front of the Tibetan Plateau[J]. Science China Earth Sciences,57(10):2532–2542. doi: 10.1007/s11430-014-4908-2
    Wang Q L,Zhang L F,Liao W L,Li J G,Shen X L. 2013. Fault tectonics and seismic activity characteristics of three gorges reservoir[J]. Journal of Geodesy and Geodynamics,33(5):29–33 (in Chinese).
    Wang Q L,Zhang L F,Liao W L,Li J G. 2016. Research on genesis of M4.2 and M4.5 earthquake sequences in march 2014 in Zigui County,Hubei Province[J]. Seismology and Geology,38(1):121–130 (in Chinese).
    Wang Z,Wu Y L,Zhang Y,Yao Y S. 2020. Crustal density inversion and its tectonic structure in Badong-Zigui area[J]. Geomatics and Information Science of Wuhan University,45(11):1763–1770 (in Chinese).
    Wu H B,Shen X L,Du C C,Chen J H,Wang J. 2015. Study of small earthquakes activity characteristics before the Zigui 4.5,4.7 earthquake in 2004[J]. Journal of Geodesy and Geodynamics,35(5):751–757 (in Chinese).
    Wu H B,Shen X L,Wang J,Zhao L Y,Chen J H. 2018. Three-dimensional velocity structure of upper crust in the Three Gorges Reservoir area derived from double-difference tomography[J]. Chinese Journal of Geophysics,61(7):2802–2814 (in Chinese).
    Xia J W. 2020. Overview of reservoir induced earthquake research on Three Gorges Project[J]. Express Water Resources &Hydropower Information,41(1):28–35 (in Chinese).
    Xie J. 2016. Verification and Application of Surface Wave from Ambient Noise[D]. Hefei: University of Science and Technology of China: 34–50 (in Chinese).
    Yang Q Y,Wu Q J,Sheng Y R,Gao J Y,Song J,Di L. 2018. Regional seismic body wave tomography and deep seismogenic environment beneath Zhangbo seismic belt and its adjacent area[J]. Chinese Journal of Geophysics,61(8):3251–3262 (in Chinese).
    Yu P Q. 1993. Discussion on the possible tectonic earthquake in Changjiang Three-Gorge Reservoir area in relation to hydrogeologic conditions[J]. South China Journal of Seismology,13(1):76–83 (in Chinese).
    Zhang Y,Chen C,Liang Q,Wang L S,Du J S,Liu S B. 2012. Density structure of upper and middle crust in Three Gorges reservoir area[J]. Earth Science-Journal of China University of Geosciences,37(S1):213–222 (in Chinese).
    Zhao L Y,Deng J,Chen J H,Shen X L,Dai M,Wei G C. 2010. Study on source mechanism of MS 4.1 and MS 3.2 earthquakes in Hubei-Zigui with CAP method[J]. Journal of Yangtze River Scientific Research Institute,27(5):81–84 (in Chinese).
    Zheng X F,Ouyang B,Zhang D N,Yao Z X,Liang J H,Zheng J. 2009. Technical system construction of Data Backup Centre for China Seismograph Network and the data support to researches on the Wenchuan earthquake[J]. Chinese Journal of Geophysics,52(5):1412–1417 (in Chinese).
    Bensen G D,Ritzwoller M H,Barmin M P,Levshin A L,Lin F,Moschetti M P,Shapiro N M,Yang Y. 2007. Processing seismic ambient noise data to obtain reliable broad-band surface wave dispersion measurements[J]. Geophys J Int,169(3):1239–1260. doi: 10.1111/j.1365-246X.2007.03374.x
    Hermann R B, Ammon C J. 2002. Computer Programs in Seismology Version 3.30: Surface Waves, Receiver Functions, and Crustal Structure[M]. St Louis, Missouri: St Louis University: 66–70.
    Herrmann R B. 2013. Computer programs in seismology:An evolving tool for instruction and research[J]. Seismol Res Lett,84(6):1081–1088. doi: 10.1785/0220110096
    Huang R,Zhu L P,Encarnacion J,Xu Y X,Tang C C,Luo S,Jiang X H. 2018. Seismic and geologic evidence of water-induced earthquakes in the Three Gorges Reservoir region of China[J]. Geophys Res Lett,45(12):5929–5936.
    Rawlinson N,Sambridge M. 2003. Seismic traveltime tomography of the crust and lithosphere[J]. Adv Geophys,46:81–198.
    Yao H J,Gouédard P,Collins J A,McGuire J J,van der Hilst R D. 2011. Structure of young East Pacific Rise lithosphere from ambient noise correlation analysis of fundamental- and higher-mode Scholte-Rayleigh waves[J]. Compt Rend Geosci,343(8/9):571–583.
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