Ni Sidao (倪四道)
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    Ni Sidao (倪四道)

    Dr. Sidao Ni, Changjiang Professor of Geophysics

    Tel: 86-551-3600085

    Fax: 86-551-3607386



    Computational Seismology ;Global Seismology; Earthquake Physics

    Current research:

    - High Frequency Radiation of great earthquakes
    - Focal depth, mechanism and directivity of earthquakes from waveforms

    - Source region of Microseismic Sources

    - D” and Ultra Low Velocity Zone


    2007—Director of National Geophysical Observatory (Mengcheng), USTC

    2004- Professor of Geophysics, University of Science and Technology of China (USTC)

    2003-2004 Associate Scientist, Seismological Laboratory, Caltech

    2001-2003 Assistant Scientist, Seismological Laboratory, Caltech


    2001, Ph.D. of Geophysics (major) and Computational Science (minor),

    California Institute of Technology,

    (advisors: Don Helmberger and Thomas J. Ahrens).

    1996, M.Sc. of Geophysics, UTSC, (advisor, Guoming Xu)

    1993, B.Sc. of Geophysics, USTC,


    2004-2007, Chinese Academy of Science, 100 outstanding researcher


    Organizational (USTC)

    2005- Chair, geophysics program.

    2005- asscoiate director, Chinese Academy of Science, Key Laboratory of Crust and Mantle Material and Evironment

    Advisory Boards and Program Committees

    2005, Inter-Academy Panel, Mitigation of natural disaster


    2005-2007 Editorial board, Chinese Applied Geophysics,


    American Geophysical Union (1997-).
    Seismological Society of America (2005-).


    (A)  Journal Papers

    Zhan Z, S Ni, D. Helmberger and R. Clayton, (2010), Retrieval ofMoho-reflected shear wave arrivals from ambient seismic noise, Geophys. J. Int. (2010) 182, 408–420

    Ni, S, A Pitarka and D Helmberger, (2010), Rapid Source Estimation from Global Calibrated Paths, Seismological Research Letters, Volume 81, Number 3 May/June 2010

    Wang, W., S. Ni, Y. Chen, and H. Kanamori (2009), Magnitude estimation for early warning applications using the initial part of P waves: A case study on the 2008 Wenchuan sequence, Geophys. Res. Lett., 36, L16305, doi:10.1029/ 2009GL038678

    Yun S, S Ni, Park M and Lee S., (2009) Southeast Indian Ocean-Ridge earthquake sequences from cross-correlation analysis of hydroacoustic data, Geophys. J. Int. 179, 401–407 doi: 10.1111/j.1365-246X.2009.04292.x

    Xiangfang Zeng1 and Sidao Ni2,A persistent localized microseismic source nearthe Kyushu Island, Japan, GR L, VOL. 37, L24307, doi:10.1029/2010GL045774, 2010

    Helmberger, D., Lay, T., Ni, S. & Gurnis, M. (2005) , Deep mantle structure and the  postperovskite phase transition,Proc. Natl. Acad. Sci. USA 102, 17257–17263

    Ammon CJ, Ji C, Thio HK, Robinson D, Ni SD, et al,Rupture process of the 2004 Sumatra-Andaman earthquake, SCIENCE 308 (5725): 1133-1139 MAY 20 2005
    Ni S, Kanamori H, Helmberger D, Seismology - Energy radiation from the Sumatra earthquake , NATURE 434 (7033): 582-582 MAR 31 2005
     Ni SD, Tan E, Gurnis M, et al.,Sharp sides to the African superplume , SCIENCE 296 (5574): 1850-1852 JUN 7 2002,