Constraining focal mechanism of the 2011 Tohoku earthquake by gravity observations

Acta Geophysica Sinica

Volumn 55, Issue 9, 2012, Pages 3006-3015

  Xue, Xiu Xiu ^a,b   Hu, Xiao Gang ^a   Hao, Xiao Guang ^a   Liu, Lin Tao ^a  

^a Wuhan National Laboratory for Optoelectronics   (China)

^b UNIVERSITY OF CHINESE ACADEMY OF SCIENCES   (China)

Author keywords

Earth's free oscillations; Focal mechanism; Gravity observation; Tohoku earthquake

Indexed keywords

FAULTING;

2011 TOHOKU EARTHQUAKES; EARTH'S FREE OSCILLATION; FAULT DIP ANGLE; FOCAL MECHANISM; INVERSION METHODS; RESEARCH INSTITUTES; SCALAR MOMENTS; TOHOKU EARTHQUAKES;

EARTHQUAKES;

AZIMUTH; EARTHQUAKE RUPTURE; FAULT; FOCAL MECHANISM; GRAVITY; RUPTURE; TOHOKU EARTHQUAKE 2011;

HONSHU; JAPAN; PACIFIC COAST [JAPAN]; TOHOKU;

EID: 84902534962     PISSN: 00015733     EISSN: None     Source Type: Journal    
DOI: 10.6038/j.issn.0001-5733.2012.09.019     Document Type: Article

References (34)

1. Nettles M, Ekstrom G, Koss H C. Centroid-moment-tensor analysis of the 2011 Tohoku earthquake and its larger foreshocks and aftershocks. Earth Planets Space, 2011, 99(1-9): 1-8.
2. Dziewonski A M, Chou T A, Woodhouse J H. Determination of earthquake source parameters from waveform data for studies of global and regional seismicity. J. Geophys. Res., 1981, 86(B4): 2825-2852.
3. w≥4.5, using intermediate-period surface waves. Bull. Seism. Soc. Am., 1998, 88(4): 1003-1013.
4. Ekstrom G, Dziewoński A M, Maternovskaya N N, et al. Global seismicity of 2003: centroid-moment-tensor solutions for 1087 earthquakes. Phys. Earth Planet. Inter., 2005, 148(2-4): 327-351.
5. w9.0 Tohoku earthquake. Seismol. Res. Lett., 2011, 82(4): 481-493.
6. Sipkin S A. Estimation of earthquake source parameters by the inversion of waveform data: synthetic waveforms. Phys. Earth Planet. Inter., 1982, 30(2-3): 242-259.
7. Sipkin S A. Estimation of earthquake source parameters by the inversion of waveform data: Global seismicity, 1981-1983. Bull. Seism. Soc. Am., 1986, 76(6): 1515-1541.
8. Sipkin S A. Rapid determination of global moment-tensor solutions. Geophys. Res. Lett., 1994, 21(16): 1667-1670.
9. Duputel Z, Rivera L, Kanamori H, et al. Real-time W phase inversion during the 2011 off the Pacific coast of Tohoku earthquake. Earth Planets Space, 2011, 63(7): 535-539.
10. w9.0), Tohoku-oki, Japan. http://eost.u-strasbg.fr/wphase/tohoku_oki_2011/UPDATED.
11. w9.1 off the Pacific coast of Tohoku earthquake, constrained with teleseismic body and surface waves. Earth Planets Space, 2011, 63(7): 559-564.
12. w9.0 off the Pacific coast of Tohoku earthquake. Earth Planets Space, 2011, 63(7): 529-534.
13. Chen Y T. Parameters of Earthquake-Application of Digital Seismology in Earthquake Prediction (in Chinese). Beijing: Seismological Press, 2003.
14. Stein S, Okal E A. Seismology: Speed and size of the Sumatra earthquake. Nature, 2005, 434(7033): 581-582.
15. Ammon C J, Ji C, Thio H K, et al. Rupture process of the 2004 Sumatra-Andaman earthquake. Science, 2005, 308(5725): 1133-1139.
16. Lay T, Kanamori H, Ammon C J, et al. The great Sumatra-Andaman earthquake of 26 December 2004. Science, 2005, 308(5725): 1127-1133.
17. Giardini D, Li X D, Woodhouse J H. Three-dimensional structure of the Earth from splitting in free-oscillation spectra. Nature, 1987, 325(6103): 405-411.
18. Laske G, Masters G. Limits on differential rotation of the inner core from an analysis of the Earth's free oscillations. Nature, 1999, 402(6757): 66-69.
19. Ishii M, Tromp J. Normal-mode and free-air gravity constraints on lateral variations in velocity and density of Earth's mantle. Science, 1999, 285(5431): 1231-1236.
20. Hu X G, Liu L T, Sun H P, et al. Wavelet filter analysis of splitting and coupling of seismic normal modes below 1.5 mHz with superconducting gravimeters after the December 26, 2004 Sumatra earthquake. Science in China Series D: Earth Sciences, 2006, 49(12): 1259-1269.
21. Hu X G, Liu L T, Hinderer J, et al. Wavelet filter analysis of local atmospheric pressure effects on gravity variations. J. Geodesy, 2005, 79(8): 447-459.
22. Hu X G, Liu L T, Hinderer J, et al. Wavelet filter analysis of atmospheric pressure effects in the long-period seismic mode band. Phys. Earth Planet. Inter., 2006, 154(1): 70-84.
23. Aki K, Richards P G. Quantitative Seismology: Theory and Methods. San Francisco: W. H. Freeman, 1980.
24. Helffrich G R. How good are routinely determined focal mechanisms? Empirical statistics based on a comparison of Harvard, USGS and ERI moment tensors. Geophys. J. Int., 1997, 131(3): 741-750.
25. Kanamori H, Rivera L. Source inversion of W-phase: Speeding up seismic tsunami warning. Geophys. J. Int., 2008, 175(1): 222-238.
26. Dziewonski A M, Anderson D L. Preliminary reference Earth model. Phys. Earth Planet. Inter., 1981, 25(4): 297-356.
27. Kedar S, Watada S, Tanimoto T. The 1989 Macquarie Ridge earthquake: Seismic moment estimation from long-period free oscillations. J. Geophys. Res., 1994, 99(B9): 17893-17907.
28. Park J, Song T A, Tromp J, et al. Earth's free oscillations excited by the 26 December 2004 Sumatra-Andaman earthquake. Science, 2005, 308(5725): 1139-1144.
29. Lambotte S, Rivera L, Hinderer J. Rupture length and duration of the 2004 Aceh-Sumatra earthquake from the phases of the Earth's gravest free oscillations. Geophys. Res. Lett., 2006, 33: L03307, doi: 10.1029/2005GL024090.
30. Shapiro N M, Ritzwoller M H. Monte-Carlo inversion for a global shear-velocity model of the crust and upper mantle. Geophys. J. Int., 2002, 151(1): 88-105.
31. Tsai V C, Hayes G P, Duputel Z. Constraints on the long-period moment-dip tradeoff for the Tohoku earthquake. Geophys. Res. Lett., 2011, 38: L00G17, doi: 10.1029/2011GL049129.
32. Banerjee P, Pollitz F F, Bürgmann R. The size and duration of the Sumatra-Andaman earthquake from far-field static offsets. Science, 2005, 308(5729): 1769-1772.
33. Pollitz F F, Bürgmann R, Banerjee P. Geodetic slip model of the 2011 M9.0 Tohoku earthquake. Geophys. Res. Lett., 2011, 38: L00G08, doi: 10.1029/2011GL048632.
34. Ammon C J, Lay T, Kanamori H, et al. A rupture model of the 2011 off the Pacific coast of Tohoku earthquake. Earth Planets Space, 2011, 63(7): 693-696.