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Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault

A Publisher Correction to this article was published on 17 June 2019

This article has been updated


Various studies report on temporal changes of seismic velocities in the crust and attempt to relate the observations to changes of stress and material properties around faults. Although there are growing numbers of observations on coseismic velocity reductions, generally there is a lack of detailed observations of the healing phases. Here we report on a pronounced coseismic reduction of velocities around two locked sections (asperities) of the Longmenshan fault with a large slip during the 2008 Mw 7.9 Wenchuan earthquake and subsequent healing of the velocities. The healing phase accelerated significantly at the southern asperity right after the nearby 2013 Mw 6.6 Lushan earthquake. The results were obtained by joint inversions of travel time data at four different periods across the Wenchuan and Lushan earthquakes. The rapid acceleration of healing in response to the Lushan earthquake provides unique evidence for the high sensitivity of seismic velocities to stress changes. We suggest that stress redistribution plays an important role in rebuilding fault strength.

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Fig. 1: The topographic map shows the tectonic blocks around the 2008 Mw 7.9 WCEQ and 2013 Mw 7.0 LSEQ.
Fig. 2: Temporal variations of crustal velocity structure beneath the Longmenshan fault zone.
Fig. 3: Spatiotemporal evolution of the velocity structure along the Longmenshan fault zone.
Fig. 4: Evolution diagram of the Longmenshan fault zone in four different stages.

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Data availability

The travel time data are provided by the Sichuan Earthquake Administration and the China Earthquake Data Centre and are available at

Code availability

The codes used to generate individual results are available through the contact information from the original publications. Requests for further materials should be directed to S.P. (

Change history

  • 17 June 2019

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.


  1. Niu, F., Silver, P. G., Nadeau, R. M. & McEvilly, T. V. Migration of seismic scatterers associated with the 1993 Parkfield aseismic transient event. Nature 426, 544–548 (2003).

    Article  Google Scholar 

  2. Schaff, D. P. & Beroza, G. C. Coseismic and postseismic velocity changes measured by repeating earthquakes. J. Geophys. Res. 109, B10302 (2004).

    Article  Google Scholar 

  3. Peng, Z. & Ben-Zion, Y. Temporal changes of shallow seismic velocity around the Karadere–Duzce branch of the North Anatolian fault and strong ground motion. Pure Appl. Geophys. 163, 567–599 (2006).

    Article  Google Scholar 

  4. Niu, F., Silver, P. G., Daley, T. M., Cheng, X. & Majer, E. L. Preseismic velocity changes observed from active source monitoring at the Parkfield SAFOD drill site. Nature 454, 204–208 (2008).

    Article  Google Scholar 

  5. Brenguier, F. et al. Postseismic relaxation along the San Andreas fault at Parkfield from continuous seismological observations. Science 321, 1478–1481 (2008).

    Article  Google Scholar 

  6. Wu, C. Q., Peng, Z. G. & Ben-Zion, Y. Non-linearity and temporal changes of fault zone site response associated with strong ground motion. Geophys. J. Int. 176, 265–278 (2009).

    Article  Google Scholar 

  7. Bonilla, L. F., Guéguen, P. & Ben-Zion, Y. Monitoring co-seismic temporal changes of shallow material during strong ground motion with interferometry and autocorrelation. Bull. Seism. Soc. Am. 109, 187–198 (2019).

    Article  Google Scholar 

  8. Cheng, X., Niu, F. & Wang, B. S. Coseismic velocity change in the rupture zone of the 2008 M w 7.9 Wenchuan Earthquake observed from ambient seismic noise. Bull. Seismol. Soc. Am. 100, 2539–2550 (2010).

    Article  Google Scholar 

  9. Froment, B. M., Campillo, M., Chen, J. H. & Liu, Q. Y. Deformation at depth associated with the 12 May 2008 M w 7.9 Wenchuan earthquake from seismic ambient noise monitoring. Geophys. Res. Lett. 40, 78–82 (2013).

    Article  Google Scholar 

  10. Obermann, A. et al. Seismic noise correlations to image structural and mechanical changes associated with the M w 7.9 2008 Wenchuan earthquake. J. Geophys. Res. 119, 3155–3168 (2014).

    Article  Google Scholar 

  11. Lay, T. & Kanamori, H. Insights from the great 2011 Japan earthquake. Phys. Today 64, 33–39 (2011).

    Article  Google Scholar 

  12. Murray, J. R. & Segall, P. Spatiotemporal evolution of a transient slip event on the San Andreas fault near Parkfield, California. J. Geophys. Res. 110, B09407 (2005).

    Article  Google Scholar 

  13. Obara, K. Nonvolcanic deep tremor associated with subduction in southwest Japan. Science 296, 1679–1681 (2002).

    Article  Google Scholar 

  14. Rogers, G. & Dragert, H. Episodic tremor and slip on the Cascadia subduction zone: the chatter of silent slip. Science 300, 1942–1943 (2003).

    Article  Google Scholar 

  15. Nadeau, R. M. & Dolenc, D. Nonvolcanic tremors deep beneath the San Andreas fault. Science 307, 389 (2005).

    Article  Google Scholar 

  16. Xiong, X. et al. Coulomb stress transfer and accumulation on the Sagaing Fault, Myanmar, over the past 110 years and its implications for seismic hazard. Geophys. Res. Lett. 44, 4781–4789 (2017).

    Article  Google Scholar 

  17. Freed, A. M. & Lin, J. Delayed triggering of the 1999 Hector Mine earthquake by viscoelastic stress transfer. Nature 411, 180–183 (2001).

    Article  Google Scholar 

  18. Toda, S., Stein, R. S., Reasonberg, P. A. & Dieterich, J. H. Stress transferred by the M w = 6.5 Kobe, Japan, shock: effect on aftershocks and future earthquake probabilities. J. Geophys. Res. 103, 24543–24565 (1998).

    Article  Google Scholar 

  19. Stein, R. S. The role of stress transfer in earthquake occurrence. Nature 402, 605–609 (1999).

    Article  Google Scholar 

  20. Pollitz, F., Vergnolle, M. & Calais, E. Fault interaction and stress triggering of twentieth century earthquakes in Mongolia. J. Geophys. Res. 108, 2503 (2003).

    Article  Google Scholar 

  21. Parsons, T., Ji, C. & Kirby, E. Stress changes from the 2008 Wenchuan earthquake and increased hazard in the Sichuan basin. Nature 454, 509–510 (2008).

    Article  Google Scholar 

  22. Yamamura, K. et al. Long-term observation of in situ seismic velocity and attenuation. J. Geophys. Res. 108, B2317 (2003).

    Article  Google Scholar 

  23. Birch, F. The velocity of compressional waves in rocks to 10 kilobars, part 1. J. Geophys. Res. 65, 1083–1102 (1960).

    Article  Google Scholar 

  24. Birch, F. The velocity of compressional waves in rocks to 10 kilobars, part 2. J. Geophys. Res. 66, 2199–2224 (1961).

    Article  Google Scholar 

  25. Nur, A. & Simmons, G. The effect of saturation on velocity in low porosity rocks. Earth Planet. Sci. Lett. 7, 183–193 (1969).

    Article  Google Scholar 

  26. Yamada, M., Mori, J. & Ohmi, S. Temporal changes of subsurface velocities during strong shaking as seen from seismic interferometry. J. Geophys. Res. 115, B03302 (2010).

    Google Scholar 

  27. Sawazaki, K., Sato, H., Nakahara, H. & Nishimura, T. Time-lapse changes of seismic velocity in the shallow ground caused by strong ground motion shock of the 2000 western Tottori earthquake, Japan, as revealed from coda deconvolution analysis. Bull. Seismol. Soc. Am. 99, 352–366 (2009).

    Article  Google Scholar 

  28. Nakata, N. & Snieder, R. Near-surface weakening in Japan after the 2011 Tohoku-Oki earthquake. Geophys. Res. Letters. 38, L17302 (2011).

    Article  Google Scholar 

  29. Sens-Schönfelder, C. & Wegler, U. Passive image interferometry and seasonal variations of seismic velocities at Merapi volcano, Indonesia. Geophys. Res. Lett. 33, L21302 (2006).

    Article  Google Scholar 

  30. Brenguier, F. et al. Towards forecasting volcanic eruptions using seismic noise. Nat. Geosci. 1, 126–130 (2008).

    Article  Google Scholar 

  31. Pei, S. P. & Chen, Y. J. Link between seismic velocity structure and the 2010 M s 7.1 Yushu earthquake, Qinghai, China: evidence from aftershock tomography. Bull. Seismol. Soc. Am. 102, 445–450 (2012).

    Article  Google Scholar 

  32. Pei, S. P., Zhang, H. J., Su, J. R. & Cui, Z. X. Ductile gap between the Wenchuan and Lushan earthquakes revealed from the two-dimensional Pg seismic tomography. Sci. Rep. 4, 6489 (2014).

    Article  Google Scholar 

  33. Ji, C. & Hayes, G. Preliminary Result of the May 12, 2008 M w 7.9 Eastern Sichuan, China E (USGS, 2008);

  34. Feng, G. C., Hetland, E. A., Ding, X. L., Li, Z. W. & Zhang, L. Coseismic fault slip of the 2008 M w 7.9 Wenchuan earthquake estimated from InSAR and GPS measurements. Geophys. Res. Lett. 37, L01302 (2010).

    Google Scholar 

  35. Diao, F., Xiong, X., Wang, R., Zheng, Y. & Hsu, H. Slip model of the 2008 M w 7.9 Wenchuan (China) earthquake derived from co-seismic GPS data. Earth Planets Space 62, 869–874 (2010).

    Article  Google Scholar 

  36. Fu, B. et al. Surface deformation related to the 2008 Wenchuan earthquake, and mountain building of the Longmen Shan, eastern Tibetan Plateau. J. Asian Earth Sci. 40, 805–824 (2011).

    Article  Google Scholar 

  37. Xu, X. W. et al. Coseismic reverse- and oblique-slip surface faulting generated by the 2008 M w 7.9 Wenchuan earthquake, China. Geology 37, 515–518 (2009).

    Article  Google Scholar 

  38. Efron, B. & Tibshirani, R. Bootstrap methods for standard errors, confidence intervals, and other measures of statistical accuracy. Stat Sci. 1, 54–77 (1986).

    Article  Google Scholar 

  39. Yang, C., Li, G., Niu, F. & Ben-Zion, Y. Significant effects of shallow seismic and stress properties on phase velocities of Rayleigh waves up to 20 s. Pure Appl. Geophys. 176, 1255–1267 (2019).

    Article  Google Scholar 

  40. Vidale, J. E. & Li, Y. G. Damage to the shallow Landers fault from the nearby Hector Mine earthquake. Nature 421, 524–526 (2003).

    Article  Google Scholar 

  41. Taira, T., Silver, P. G., Niu, F. & Nadeau, R. M. Remote triggering of fault-strength changes on the San Andreas Fault at Parkfield. Nature 461, 636–639 (2009).

    Article  Google Scholar 

  42. Freed, A. M. Earthquake triggering by static, dynamic and postseismic stress transfer. Annu. Rev. Earth Planet. Sci. 33, 335–367 (2005).

    Article  Google Scholar 

  43. Qiu, J. et al. Comparative analysis of in-situ stress state in the southwestern segment of the Longmenshan fault zone before and after the Lushan earthquake. Acta Geol Sin. 91, 969–978 (2017).

    Google Scholar 

  44. Pujol, J. Comments on the joint determination of hypocenters and station corrections. Bull. Seismol. Soc. Am. 78, 1179–1189 (1988).

    Google Scholar 

  45. Paige, C. C. & Saunders, M. A. LSQR: an algorithm for sparse linear equations and sparse least squares. ACM Trans. Math. Software 8, 43–71 (1982).

    Article  Google Scholar 

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We thank the EASP and the Center of the China Earthquake Networks for providing the seismic data in this study. This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDA20070302), the National Key R&D Program of China (2017YFC1500303) and the National Natural Science Foundation of China (41674090, 41490610).

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Q.S., Y.L., X.X., J.S. and Z.S. were responsible for collecting the travel time data; S.P. developed the new 4D tomography method and conducted the inversions; S.P., F.N. and Y.B.-Z. contributed to the interpretations and writing; F.N. took the lead on writing the manuscript.

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Correspondence to Fenglin Niu.

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Pei, S., Niu, F., Ben-Zion, Y. et al. Seismic velocity reduction and accelerated recovery due to earthquakes on the Longmenshan fault. Nat. Geosci. 12, 387–392 (2019).

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