Focal mechanism solutions of the 2008 Wenchuan earthquake sequence from P-wave polarities and SH/P amplitude ratios: New results and implications

Earthquake Science

Volumn 26, Issue 6, 2013, Pages 357-372

  Tian, Yuan ^a   Ning, Jieyuan ^a   Yu, Chunquan ^b   Cai, Chen ^c   Tao, Kai ^a  

^a PEKING UNIVERSITY   (China)

^b MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^c WASHINGTON UNIVERSITY   (United States)

Author keywords

Focal mechanism solutions; Longmenshan fault; Stress; Wenchuan earthquake sequence

Indexed keywords

EID: 84894468127     PISSN: 16744519     EISSN: 18678777     Source Type: Journal    
DOI: 10.1007/s11589-014-0067-y     Document Type: Article

References (43)

1. Brillinger DR, Udias A, Bolt BA (1980) A probability model for reginal focal mechanism solutions. Bull Seismol Soc Am 70(1):149-170
2. Burchfiel BC, Royden LH, Van der Hilst RD, Hager BH (2008) A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People's Republic of China. GSA Today 18:4-11
3. Cai C, Yu CQ, Tao K, Hu XP, Tian Y, Zhang H, Cui XF, Ning JY (2011) Spatial distribution and focal mechanism solutions of the Wenchuan earthquake series: Results and implications. Earthq Sci 24(1):115-125
4. Cui XF, Xie FR, Zhao JT (2005) The regional characteristics of focal mechanism solutions in China and adjacent areas. Seismol Geol 27(2):234-242
5. Diao GL, Wang HT, Gao GY, Long HY, Nie XH (2005) A deflection process for stress field of the Jiashi strong earthquake sequence. Chin J Geophys 48(5):1062-1068
6. Hardebeck JL, Shearer PM (2002) A new method for determining first-motion focal mechanisms. Bull Seismol Soc Am 92(6):2264-2276
7. Hardebeck JL, Shearer PM (2003) Using S/P amplitude ratios to constrain the focal mechanisms of small earthquakes. Bull Seismol Soc Am 93(6):2434-2444
8. Hu XP, Yu CQ, Tao K, Cui XF, Ning JY (2008) Focal mechanism solutions of Wenchuan earthquake and its strong aftershocks obtained from initial P wave polarity analysis. Chin J Geophys 51(6):1711-1718
9. W7.9 eastern Sichuan, China earthquake. US Geological Survey, Reston
10. Kasahara K (1963) Computer program for a fault-plane solution. Bull Seismol Soc Am 53(1):1-13
11. Kisslinger C (1980) Evaluation of S to P amplitude ratios determining focal mechanisms from regional network observations. Bull Seismol Soc Am 70(4):999-1014
12. Kisslinger C, Bowman JR, Koch K (1981) Procedures for computing focal mechanisms from local (SV/P)z data. Bull Seismol Soc Am 71(6):1719-1729
13. Li RS, Cui XF, Diao GL, Zhang HY (2008) Temporal and spatial variation of the present crustal stress in northern part of North China. Acta Seismol Sin 30(6):570-580
14. W7.9 Wenchuan earthquake, China. Tectonophysics 471(3-4):203-215
15. S8.0 Wenchuan Earthquake: preliminary results from the western Sichuan mobile seismic array observations. Seismol Geol 30(3):584-596
16. S8.0 Wenchuan earthquake, Sichuan: East-west crustal shortening on oblique, parallel thrusts along the eastern edge of Tibet. Earth Planet Sci Lett 286(3-4):355-370
17. W7.9 Wenchuan Earthquake, China. Bull Seismol Soc Am 100(5):2615-2650
18. Loveless JP, Meade BJ (2011) Partitioning of localized and diffuse deformation in the Tibetan Plateau from joint inversions of geologic and geodetic observations. Earth Planet Sci Lett 303(1-2):11-24
19. S7.0 Lushan earthquake sequence. Chin J Geophys 56(5):1753-1763
20. Meade BJ (2007) Present-day kinematics at the India-Asia collision zone. Geology 35(1):81-84
21. Nakamura A, Horiuchi S, Hasegawa A (1999) Joint focal mechanism determination with source-region station corrections using short-period body-wave amplitude data. Bull Seismol Soc Am 89(2):373-383
22. Nakamura T, Tsuboi S, Kaneda Y, Yamanaka Y (2010) Rupture process of the 2008 Wenchuan, China earthquake inferred from teleseismic waveform inversion and forward modeling of broadband seismic waves. Tectonophysics 491(1-4):72-84
23. S8.0 earthquake, Sichuan, China. Tectonophysics 491(1-4):211-217
24. Rau R-J, Wu FT, Shin T-C (1996) Regional network focal mechanism determination using 3D velocity model and SH/P amplitude ratio. Bull Seismol Soc Am 86(5):1270-1283
25. Reasenberg P, Oppenheimer D (1985) FPFIT, FPPLOT, and FPPAGE: FORTRAN computer programs for calculating and displaying earthquake fault-plane solutions. U.S. Geological Survey, Open File Report 85-739, 109 pp
26. Shen Z-K, Sun JB, Zhang PZ, Wan YG, Wang M, Burgmann R, Zeng YH, Gan WJ, Liao H, Wang QL (2009) Slip maxima at fault junctions and rupturing of barriers during the 2008 Wenchuan earthquake. Nat Geosci 2(10):718-724
27. Wang QC, Chen ZL, Zheng SH (2009) Spatial segmentation characteristic of focal mechanism of aftershock sequence of Wenchuan earthquake. Chin Sci Bull 54(16):2348-2354
28. Wang Q, Qiao XJ, Lan QG, Jeffrey F, Yang SM, Xu CJ, Yang YL, You XZ, Tan K, Chen G (2011) Rupture of deep faults in the 2008 Wenchuan earthquake and uplift of the Longmen Shan. Nat Geosci 4(9):634-640
29. S8.0 Wenchuan earthquake and three dimensional P-wave velocity structure in and around source region. Chin J Geophys 52(2):320-328
30. Xu ZH, Yan M, Zhao ZH (1983) Evaluation of the direction of tectonic stress in north China from recorded data of a large number of small earthquakes. Acta Seismol Sin 5(3):268-279
31. Xu ZH, Wang SY, Huang YR, Gao AJ, Jin XF, Chang XD (1987) Detections of mean stress axes in southwestern China deduced from microearthquake data. Acta Seismol Sin 30(5):476-486
32. Xu ZH, Wang SY, Huang YR, Gao AJ (1989) The tectonic stress field of Chinese continent deduced from a great number of earthqaukes. Acta Geophys Sin 32(6):636-647
33. W7.9 Wenchuan earthquake, China. Geology 37(6):515-518
34. S8.0 Wenchuan earthquake. Chin J Geophys 55(4):1213-1227. doi: 10.6038/j.issn.0001-5733.2012.04.017
35. Yu CQ, Tao K, Cui XF, Hu XP, Ning JY (2009) P wave first-motion focal mechanism solutions and their quality evaluation. Chin J Geophys 52(5):1402-1411
36. Yu HY, Tao K, Cai C, Zhang H, Ning JY, Wang YB (2013) Focal mechanism solutions of the tohoku-Oki earthquake sequence and their geodynamical implications. Chin J Geophys 56(8):2655-2669. doi: 10.6038/cjg20130815
37. Zhang H, Ge ZX (2010) Tracking the rupture of the 2008 Wenchuan earthquake by using the relative back-projection method. Bull Seismol Soc Am 100(5B):2551-2560
38. Zhang PZ, Xu XW, Wen XZ, Ran YK (2008) Slip rates and recurrence intervals of the Longmen Shan active fault zone, and tectonic implications for the mechanism of the May 12 Wenchuan earthquake, 2008, Sichuan, China. Chin J Geophys 51(4):1066-1073
39. Zhang Y, Feng WP, Xu LS, Zhou CH, Chen YT (2009) Spatio-temporal rupture process of the 2008 great Wenchuan earthquake. Sci China Ser D 52(2):145-154
40. Zhang Y, Xu LS, Chen YT (2013) Rupture process of the Lushan 4.20 earthquake and preliminary analysis on the disaster-causing mechanism. Chin J Geophys 56(4):1408-1411
41. S ≥ 5.6) of the 2008/05/12 Wenchuan earthquake and the implication for seismotectonics. Sci China Ser D 52(6):739-753
42. Zheng XF, Yao ZX, Liang JH, Zheng J (2010a) The role played and opportunities provided by IGP DMC of China National Seismic Network in Wenchuan Earthquake disaster relief and researches. Bull Seismol Soc Am 100(5B):2866-2872
43. Zheng Y, Ni SD, Xie ZJ, Lv J, Ma HS, Sommerville P (2010b) Strong aftershocks in the northern segment of the Wenchuan earthquake rupture zone and their seismotectonic implications. Earth Planets Space 62:881-886