Double difference relocation, focal mechanism and stress inversion of Lushan MS7.0 earthquake sequence

Acta Geophysica Sinica

Volumn 56, Issue 10, 2013, Pages 3385-3395

  Zhao, Bo ^a,b   Gao, Yuan ^a   Huang, Zhi Bin ^b   Zhao, Xu ^b   Li, Da Hu ^a  

^a INSTITUTE OF GEOPHYSICS   (China)

^b CHINA EARTHQUAKE NETWORKS CENTER   (China)

Author keywords

Aftershock sequence; Double difference relocation; Focal mechanism; Lushan earthquake; Mean stress

Indexed keywords

FAULTING;

AFTERSHOCK SEQUENCE; DOUBLE DIFFERENCES; EARTHQUAKE SEQUENCES; FAULT PLANE SOLUTIONS; FOCAL MECHANISM; LONGMENSHAN FAULTS; MEAN STRESS; SEISMIC WAVEFORMS;

EARTHQUAKES;

AFTERSHOCK; ALGORITHM; EARTHQUAKE EVENT; SEISMIC ANISOTROPY; WAVEFORM ANALYSIS;

CHINA;

EID: 84887301108     PISSN: 00015733     EISSN: 08989591     Source Type: Journal    
DOI: 10.6038/cjg20131014     Document Type: Article

References (39)

1. S7.0) and its aftershock. Chinese J. Geophys. (in Chinese), 2013, 56(5): 1764-1771.
2. S7.0 Lushan earthquake sequence. Chinese J. Geophys. (in Chinese), 2013, 56(5): 1753-1763.
3. Waldhauser F, Ellsworth L W. A double-difference earthquake location algorithm: method and application to the Northern Hayward Fault. The Seismological Society of America, 2000, 90(6): 1353-1368.
4. Zhong J M, Cheng W Z. Determination of directions of the mean stress field in Sichuan-Yunnan region from a number of focal mechanism solutions. Acta Seismologica Sinica (in Chinese), 2006, 28(4): 337-346.
5. Tang R C, Han W B. Sichuan Active Fault and Earthquake (in Chinese). Beijing: Seismological Press, 1993: 368.
6. Deng Q D, Chen D F, Zhao X L. Tectonics, seismicity and dynamics of Longmenshan mountains and its adjacent region. Seismology and Geology (in Chinese), 1994, 16(4): 389-403.
7. Chen G G, Ji F J, Zhou R J, et al. Primary research of activity segmentation of Longmenshan fault zone since late-Quaternary. Seismology and Geology (in Chinese), 2007, 29(3): 657-673.
8. Xu X W, Zhang P Z, Wen X Z, et al. Features of active tectonics and recurrence behaviors of strong earthquakes in the western Sichuan province and is adjacent regions. Seismology and Geology (in Chinese), 2005, 27(3): 446-461.
9. S8.0 Wenchuan, Sichuan, earthquake. Chinese J. Geophys. (in Chinese), 2009, 52(2): 444-454.
10. S8.0 earthquake of 12 May 2008, Sichuan, China. Chinese J. Geophys. (in Chinese), 2009, 52(2): 2527-2537.
11. Tapponier P, Peltzer G, Le Dain A Y, et al. Propagating extrusion tectonics in Asia: New insights from simple experiments with plasticine. Geology, 1982, 10(12): 611-616.
12. Zhang Z J, Wang Y H, Chen Y, et al. Crustal structure across Longmenshan fault belt from passive source seismic profiling. Geophys. Res. Lett., 2009, 36: L17310, doi:10.1029/2009GL039580.
13. Zhang Z J, Yuan X H, Chen Y, et al. Seismic signature of the collision between the east Tibetan escape flow and the Sichuan Basin. Earth Planet. Sci. Lett., 2010, 292(3-4): 254-264.
14. Zheng Y, Ge C, Xie Z J, et al. Crustal and upper mantle structure and the deep seismogenic environment in the source regions of the Lushan earthquake and the Wenchuan earthquake. Science China: Earth Sciences, 2013, 56(7): 1158-1168, doi:10.1007/s11430-013-4641-2.
15. Zhao Z, Fan J, Zheng S H, et al. Crustal structure and accurate hypocenter determination along the Longmenshan fault zone. Acta Seismologica Sinica (in Chinese), 1997, 19(6): 615-622.
16. Yang Z X, Yu X W, Zheng Y J, et al. Earthquake relocation and three-dimensional crustal structure of P-wave velocity in central-western China. Acta Seismologica Sinica (in Chinese), 2004, 26(1): 19-29.
17. S8.0 Wenchuan earthquake sequence in part: Preliminary seismotectonic analysis. Seismology and Geology (in Chinese), 2008, 30(3): 759-767.
18. S8.0 earthquake and its implication to seismotectonics. Earthquake Science, 2011, 24(1): 170-113.
19. S7.1 earthquake and its aftershocks. Earthquake Science, 2012, 25(1): 111-119.
20. Zhao B, Gao Y, Shi Y T. Relocation of small earthquakes in North China using double difference algorithm. Earthquake (in Chinese), 2013, 33(1): 12-21.
21. Liu C L, Zheng Y, Ge C, et al. Rupture process of the M7.0 Lushan earthquake, 2013. Science China (Earth Sciences), 2013, 56(7): 1187-1192, doi:10.1007/s11430-013-4639-9.
22. Shan B, Xiong X, Zheng Y, et al. Stress changes on major faults caused by 2013 Lushan earthquake, and its relationship with 2008 Wenchuan earthquake. Science China (Earth Sciences), 2013, 56(7): 1169-1176, doi:10.1007/s11430-013-4642-1.
23. Herrmann R. Computer programs in seismology, Version 3.30, 2009. www.eas.slu.edu/People/RBHerrmann/CPS/CPS330.heml.
24. Liu J, Yi G X, Zhang Z W, et al. Introduction to the Lushan, Sichuan M7.0 earthquake on 20 April 2013. Chinese J. Geophys. (in Chinese), 2013, 56(4): 1404-1407.
25. Du F, Long F, Ruan X, et al. The M7.0 Lushan earthquake and the relationship with M8.0 Wenchuan earthquake in Sichuan, China. Chinese J. Geophys. (in Chinese), 2013, 56(5): 1772-1783.
26. Zhu L P, Helmberger D V. Advancement in source estimation techniques using broadband regional seismograms. Bull. Seismol. Soc. Amer., 1996, 86(5): 1634-1641.
27. S7.0 earthquake on April 2013: A high-angle thrust event. Chinese J. Geophys. (in Chinese), 2013, 56(4): 1418-1424.
28. Xie Z J, Jin B K, Zheng Y, et al. Source parameters inversion of the 2013 Lushan earthquake by combining teleseismic waveforms and local seismograms. Science China (Earth Sciences), 2013, 56(7): 1177-1186, doi:10.1007/s11430-013-4640-3.
29. Xu Z H, Ge S M. Stress field in the Fuyun, Xinjiang earthquake fracture zone determined by fitting fault slip vector data. Acta Seismologica Sinica (in Chinese), 1984, 64(4): 395-404.
30. Chen Y T, Gu H D. The Basis Theory of Seismic Source (in Chinese). Graduate University of Chinese Academy of Sciences, 2007: 39-42.
31. Xu Z H. Mean stress field in Tangshan aftershock area obtained from focal mechanism data by fitting slip directions. Acta Seismologica Sinica (in Chinese), 1985, 7(4): 349-362.
32. Gephart J W, Forsyth D W. An improved method for determining the regional stress tensor using earthquake focal mechanism data: Application to the San Fernand earthquake sequence. J. Geophys. Res., 1984, 89(B11): 9171-9474.
33. An Q M, Ding L F, Wang H Z, et al. Research of property and activity of Longmen mountain fault zone. Journal of Geodesy and Geodynamics (in Chinese), 2004, 24(2): 115-119.
34. Shi Y T, Gao Y, Zhao C P, et al. A study of seismic anisotropy of Wenchuan earthquake sequence. Chinese J. Geophys. (in Chinese), 2009, 52(2): 398-407.
35. Shi Y T, Gao Y, Zhang Y J, et al. Shear-wave splitting in the crust in Eastern Songpan-Garze block, Sichuan-Yunnan block and Western Sichuan basin. Chinese J. Geophys. (in Chinese), 2013, 56(2): 481-494.
36. S7.0 earthquake of 20 April 2013 in Sichuan, China. Science China (Earth Sciences), 2013, doi:10.1007/s11430-013-4646-x.
37. Gao Y, Wu J, Fukao Y, et al. Shear wave splitting in the crust in North China: stress, faults and tectonic implications. Geophys. J. Int., 2011, 187(2): 642-654.
38. Gao Y, Wu J. Compressive stress field in the crust deduced from shear-wave anisotropy: an example in capital area of China. Chinese Science Bulletin, 2008, 53(18): 2840-2848.
39. Zhao B, Gao Y, Shi Y T, et al. Shear wave splitting in the crust in the intersection zone of the Zhangjiakou-Bohai seismic belt and Shanxi seismic belt. Chinese J. Geophys. (in Chinese), 2011, 54(6): 1517-1527.