Seismology, Earth's Deep Interior
Ph.D., Caltech, 1994
Department of Geology, 1301 W Green St, Urbana, IL 61801, phone: (217)333-1841,
My research involves primarily the application of seismic observations
in modeling and imaging the structure and dynamics of the Earth's interior.
My research has focused on
structure and dynamics of the Earth's core (inner core super-rotation, inner core anisotropy and heterogeneity, structure
near the inner core-fluid core boundary), lateral variation of the lowermost
mantle and core-mantle boundary, and crustal and upper
mantle structure beneath east Asia with seismic travel times and new digital
broadband waveform data.
[Click here for a brief description
of May 12 Wenchuan, Sichuan, China earthquake]
[Click here for ARCTIC field experiment]
[Click here for my research publications
(including links for download)]
Courses Taught (with links)
for Engineers, Introduction
to Seismology, Data
Analysis for Geosciences, Introduction to Geophysics,
Methods in Applied Geophysics ,
Physics of Earth's Interior
||Ph.D., Geophysics with Computer
Science minor, California Institute of Technology
||M.S., Geophysics, California Institute of Technology
||B.S., Geophysics, University of Science and Technology of China
||Professor, Dept. of Geology,
University of Illinois at Urbana-Champaign
||Associate Professor, Dept. of Geology, University of Illinois
||Assistant Professor, Dept. of Geology, University of Illinois at Urban-Champaign
||Storke-Doherty Lecturer, Dept. of Earth and Environmental Sciences,
Columbia University; and Associate Research Scientist, Lamont-Doherty Earth
Observatory of Columbia University
||Postdoctoral Fellow, Lamont-Doherty Earth Observatory of Columbia University;
also Visiting Investigator at Department of Terrestrial Magnetism, Carnegie
Institution of Washington
Awards and Honors
||Associate, Center for Advanced Studies, Univ. of Illinois at
||Work on confirmation of inner core rotation (Zhang et al., SCIENCE,
1995) featured in DISCOVER Year in Science.
||Outstanding Young Scientist Award, NSF of China
||Science and Technology Agency (STA) Fellow, Research Development
Corporation of Japan
||Durk Doornbos award by the Studies of Earth Deep Interior
(SEDI) committee of
International Union of Geophysics and Geodesy (IUGG)
||The work on the detection of inner core super-rotation (Song and Richards,
NATURE, 1996) named as a 1996 Break Through of the Year by SCIENCE magazine
and received the 1996 Science and Technology Award by PopularScience magazine.
In 2000, this work was named as one of most important science discoveries
in the 20th century DISCOVER magazine.
||Storke-Doherty Lectureship of Lamont-Doherty Earth Observatory
||Lamont-Doherty Postdoctoral Fellowship
||Sir Run Run Shaw (of Hong Kong) Fellowship at Caltech
Selected Publications (Past 5 Years)
2008-present, Chair, IRIS GSN Standing Committee
2008 Program Committee, Bilateral Workshop under the Sino - US Earthquake Studies Protocol
2007 Delegate, US-China Coordinating Meeting on Earthquake Studies
2006 Program Committee member, AGU Western Pacific Meeting, Beijing.
2005-2006 IRIS GSN Standing Committee
2004 Co-Convener and Co-Chair, Special on Intraplate Tectonics: North China
and Other Regions, Fall AGU, San Francisco, CA.
2002 Convener, Special Union Session on The Earth's Core: New Insights
and Challenges, Spring AGU, Washington DC.
2001 Proposal review panel, NSF of China
2001 Co-Convener, Special Session on Inner Core -Outer Core and Lower Mantle
Interactions, the joint IAGA-IASPEI Assembly in Hanoi, August.
2000 Co-Chair, Session on Core Structure, Fall AGU, San Francisco, CA.
2000-2004 Editorial board member: Progress in Natural Science
2000-Present Alternate Representative to the Board of Directors of
1998 Co-Convener and Co-Chair, Special Seismology session on Anisotropy
and Rotation of the Inner Core, Spring AGU, Boston, MA.
1998 Convener and Chair, Special Union/SEDI session on Structure and Dynamics
of the Inner Core, Fall AGU, San Francisco, CA.
Song, X.D., Preface to the special issue on ambient noise seismology, Earthq. Sci., 23, 395-396, Doi: 10.1007/s11589-010-0744-4, 2010.
Sun, X.L., X.D. Song, S.H. Zheng, Y.J. Yang, and M.H. Ritzwoller, Three dimensional shear wave velocity structure of the crust and upper mantle beneath China from ambient noise surface wave tomography, Earthq. Sci., 23, 449-463, Doi: 10.1007/s11589-010-0744-4, 2010.
Lindner, D., X.D. Song, and P. Ma, New insights into the inner-core rotation and its variability, J. Geophys. Res., 115, doi:10.1029/2009JB006294, 2010.
Xu, Z.J., and X.D. Song, Joint inversion for crustal and Pn velocities and Moho depth for eastern margin of Tibetan Plateau, Tectonophysics, 491, 185-193, 2010.
Xu, Z.J., and X.D. Song, Temporal changes of surface wave velocity associated with major Sumatra earthquakes from ambient noise correlation, Proc. Natl. Aca. Sci. USA, 106, 14207-14212, 2009.
Dai, W., and X.D. Song, Detection of motion and heterogeneity in Earth's
liquid outer core, Geophys. Res. Lett., 35, L16311, doi:10.1029/2008GL034895, 2008.
Song, X.D., and W. Dai, Topography of Earth's inner core boundary from
high-quality waveform doublets, Geophys. J. Int.,
175, 386-399, doi: 10.1111/j.1365-246X.2008.03909.x, 2008.
Zheng, S.H., X.L. Sun, X.D. Song, Y.J. Yang, M.H. Ritzwoller, Surface wave
tomography of China from ambient seismic noise correlation, Geochem.
Geophys. Geosyst., 9, Q05020, doi:10.1029/2008GC001981, 2008.
Sun, X.L., and X.D. Song, Tomographic inversion for three-dimensional anisotropy
of Earth's inner core, Phys. Earth. Planet. Inter., 167, 53-70,
Sun, X.L., and X.D. Song, The inner inner core of the Earth: Texturing
of iron crystals from three-dimensional seismic anisotropy, Earth Planet.
Sci. Lett., 56-65, doi:10.1016/j.epsl.2008.01.049, 2008.
Song, X.D., and G. Poupinet, Inner core rotation from event-pair analysis,
Planet. Sci. Lett., 261, 259-266, doi:10.1016/j.epsl.2007.06.034, 2007.
Song, X.D., Inner core anisotropy, in Encyclopedia of Geomagnetism and
Plaeomagnetism (D. Gubbins and E. Herroro-Bervera, Eds.), 418-420,
Kluwer Acad. Publishers B.V., 2007.
Sun, X.L., X.D. Song, S.H. Zheng, and D.V. Helmberger, Evidence for a chemical-thermal
structure at base of mantle from sharp lateral P-wave variations beneath
Central America, Proc. Natl.
Acad. Sci. USA, 104 (1), 26-30, doi:10.1073/pnas.0609143103,
Zheng, S.H., X.L. Sun, and X.D. Song, Fine structure of P-wave velocity
variations underneath the Central Pacific from PKP waves recorded at the
China Seismic Network (CSN), Chinese
J. Geophys., 50(1), 183-191, 2007.
Liang, C.T., and X.D. Song, A low velocity belt beneath northern
and eastern Tibetan Plateau from Pn tomography, Geophys.
Res. Lett., 33, L22306, doi:10.1029/2006GL027926, 2006.
Sun, X.L., G. Poupinet, and X.D. Song, Examination of systematic mislocation
of South Sandwich Islands earthquakes using station pairs: Implications
for inner core rotation, J. Geophys.
Res., 111, B11305, doi:10.1029/2005JB004175, 2006.
Zhang, J., X.D. Song, Y.C. Li, P.G. Richards, X.L. Sun, and F. Waldhauser,
Inner core differential motion confirmed by earthquake doublet waveform
doublets, Science, 309, 1357-1360, doi:10.1126/science.1113193,
[click here for more research publications]