An integrated study on the coseismic and post-seismic deformation of the 2010 Yushu earthquake based on InSAR analysis

  • Qu ChunyanEmail author
  • Shan Xinjian
  • Zuo Ronghu
  • Zhang Guohong
  • Liu Yunhua


We carry out an integrated study on coseismic and post-seismic deformation caused by 2010 Yushu earthquake sequence, including both mainshock and aftershocks, by using multi-scene ENVISAT/ASAR data on two adjacent tracks. We map the extended deformation region to the west of mainshock and show the westward extension of seismogenic fault of mainshock. Based on our whole deformation field derived from mosaic interferograms, the total length of seismogenic fault reaches \({\sim }103\,\hbox {km}\) longer than \({\sim }71\,\hbox {km}\) suggested by the previous report. Several coseismic interferograms with different time baselines have similar deformation patterns, which indicate that the influence of aftershocks and post-seismic slip on coseismic deformation field is limited. Also, we observe a clear and separate deformation area, \({\sim }38\,\hbox {km}\) to the west of the mainshock epicentre, with maximum displacement of \({\sim }9\,\hbox {cm}\). The localised deformation is composed of two patches with opposite motion directions, where an aftershock cluster with at least 47 events (\({>}\hbox {Ms}\,3.0\)) occurred. We infer that this localised deformation is caused by aftershocks ruptured on a blind active fault. While a weak post-seismic deformation band along main rupture zone near mainshock epicentre is likely attributable to short-term afterslip.


InSAR Yushu earthquake coseismic aftershock post-seismic 



The authors would like to thank the ESA (European Space Agency) for providing the ENVISAT/ASAR data. This research was jointly supported by the National Natural Science Foundation of China (41872229) and projects of the National Key Laboratory for Earthquake Dynamics (LED2015A03) and the Basic Scientific Funding of Institute of Geology, China Earthquake Administration (IGCEA1809).


  1. Chen L C, Wang H, Ran Y K, Sun X Z and Su G W 2010 The Ms 7.1 Yushu earthquake surface ruptures and historical earthquakes; Chinese Sci. Bull. 55 1200–1205.Google Scholar
  2. Deng Q D 2007 Map of active tectonics in China; Seismological Press, Beijing.Google Scholar
  3. Gan W J, Zhang P Z, Shen Z K, Niu Z J, Wang M, Wang Y G, Zhou D M and Cheng J 2007 Present-day crustal motion within the Tibetan Plateau; J. Geophys. Res. 112(B08416).Google Scholar
  4. Guo H D, Wang X Y and Li X W 2010 Yushu earthquake synergic analysis study using multi-model SAR datasets; Chinese Sci. Bull. 55(31) 3499–3503.CrossRefGoogle Scholar
  5. Li M F, Xing C Q, Cai C X, Guo W X, Wu S X and Yuan Z Z 1995 Research on activity of YuShu fault; Seismol. Geol. 17 218–224.Google Scholar
  6. Li Z H, Elliott J R, Feng W P, James A J, Barry E P and Richard J W 2011 The 2010 Mw 6.8 Yushu (Qinghai, China) earthquake: Constraints provided by InSAR and body wave seismology; J. Geophys. Res. 116(B10302).Google Scholar
  7. Liu Y H, Shan X J, Qu C Y and Zhang G F 2010a Earthquake deformation field characteristics associated with the 2010 Yushu Ms 7.1 earthquake; Sci. China Ser. D: Earth Sci. 54(4) 571–580.CrossRefGoogle Scholar
  8. Liu C, Xu L S and Chen Y T 2010b Quick moment tensor solution for 14 April 2010 Yushu, Qinghai, earthquake; Acta Seismol. Sin. 32(3) 366–368 (in Chinese with English abstract).Google Scholar
  9. Meng G J, Ren J W, Su X N, Yang Y L, Zhu Z, Ge L L and Li X J 2013 Coseismic deformation of the 2010 Mw 6.9 Yushu earthquake derived from GPS data; Seismol. Res. Lett. 84(1) 57–64.CrossRefGoogle Scholar
  10. Peng H, Ma X M and Bai J Q 2006 Characteristics of quaternary activities of Garze–Yushu fault zone; J. Geomech. 12 295–304.Google Scholar
  11. Qu C Y, Zhang G F, Shan X J, Zhang G H, Liu Y H and Song X G 2013 Coseismic and post-seismic deformation fields of the 2010 Yushu, Qinghai Ms 7.1 earthquake and their evolution processes; Chinese J. Geophys. 56(7) 1–11 (in Chinese with English abstract).Google Scholar
  12. Shen Q, Qiao X J, Wang Q, Zhang J F and Tan K 2010 Characteristic analysis of coseismic deformation of Yushu Mw 6.9 earthquake from InSAR images; J. Geod. Geodyn. 30(3) 5–9.Google Scholar
  13. Sun X Z, Xu X W, Chen L C, Tan X B and Yu G H 2012 Surface rupture features of the 2010 Yushu earthquake and its tectonic implication; Chin. J. Geophys. 55(1) 155–170 (in Chinese with English abstract).Google Scholar
  14. Tan K, Wang Q and Wang X Q 2005 Analytic models and space-time distribution of post-seismic deformation; J. Geod. Geodyn. 25(4) 23–26.Google Scholar
  15. Tobita M, Nishimura T, Kobayashi T, Hao K T and Shindo Y 2011 Estimation of coseismic deformation and a fault model of the 2010 Yushu earthquake using PALSAR interferometry data; Earth Planet. Sci. Lett. 307 430–438.CrossRefGoogle Scholar
  16. Wen X Z, Xu X W, Zheng R Z, Xie Y and Wan C 2003 Average ship-rate and recent large earthquake ruptures along the Garze–Yushu Fault; Sci. China 33 199–208.Google Scholar
  17. Wen Y M, Xu C J, Liu Y and He P 2013 Coseismic slip in the 2010 Yushu earthquake (China), constrained by wide-swath and strip-map InSAR; Nat. Hazards Earth Syst. Sci. 13 35–44.CrossRefGoogle Scholar
  18. Werner C, Wegmüller U, Strozzi T and Wiesmann A 2000 Gamma SAR and interferometric processing software; In: Proceedings of the ERS-Envisat symposium 1620(1620), Gothenburg, Sweden, 16–20 October, 2000.Google Scholar
  19. Zha X J, Dai Z Y, Ge L L, Zhang G, Li X J, Chen X F, Li Z H and Fu R S 2011 Fault geometry and slip distribution of the 2010 Yushu earthquakes inferred from InSAR measurement; Bull. Seismol. Soc. Am. 101(4) 1951–1958.CrossRefGoogle Scholar
  20. Zhang P Z, Deng Q D, Zhang G M, Ma J, Gan W J, Min W, Mao F Y and Wang Q 2003 Active tectonic blocks and strong earthquakes in the continental of China; Sci. China 33 12–20.Google Scholar
  21. Zhang Y, Xu L S and Chen Y T 2010 Fast inversion of rupture process of the 14 April 2010 Yushu, Qinghai, earthquake; Earthq. Sci. 23 201–204.CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  • Qu Chunyan
    • 1
    Email author
  • Shan Xinjian
    • 1
  • Zuo Ronghu
    • 1
  • Zhang Guohong
    • 1
  • Liu Yunhua
    • 1
  1. 1.State Key Laboratory of Earthquake Dynamics, Institute of GeologyChina Earthquake AdministrationBeijingChina

Personalised recommendations