**Profile | Research | Publications**

**Submitted manuscripts**

Wu, R.S., X.B. Xie and S. Jin, One-return propagators and the applications in modeling and imaging, *Frontier Research in Seismology*, submitted.

**Publications**

Zhao, L. F., X. B. Xie, B. F. Tian, et al., 2015, Pn-wave Geometrical Spreading and Attenuation in Northeast China and the Korean Peninsula Constrained by Observations from North Korean Nuclear Explosions, *Journal of Geophysical Research: Solid Earth*, DOI: 10.1002/2015JB012205.

Xu, W., X. B. Xie, and J. Geng, 2015, Validity of the Rytov Approximation in the Form of Finite-Frequency Sensitivity Kernels, *Pure and Applied Geophysics*, DOI: 10.1007/s00024-014-0991-8.

Liu, Y., H. Hu, X. B. Xie, Y. Zheng, and P. Li , 2015, Reverse time migration of internal multiples for subsalt imaging, *Geophysics*, DOI: 10.1190/geo2014-0429.1.

Xie, X. B., D. Lokshtanov, and J. Pajchel, 2014, Finite-Frequency Sensitivity Kernels and Turning-Wave Tomography, Possibilities and Difficulties, *Society of Exploration Geophysicists*, DOI: SEG-2014-0898.

Yan, R., H. M. Guan, X. B. Xie, et al., 2014, Acquisition aperture correction in the angle domain toward true-reflection reverse time migration,* Geophysics*, DOI:10.1190/GEO2013-0324.1.

Geng, Y., and X. B. Xie, 2014, Gaussian beam based finite-frequesncy turning wave tomography, *Journal of Applied Geophysics*, DOI:10.1016/j.jappgeo.2014.07.019.

Zhao, L. F., X. B. Xie, and W. M. Wang, 2014, The 12 February 2013 North Korean Underground Nuclear Test, *Seismological Research Letters*, **85**, 130-134, DOI: 10.1785/0220130103.

Zhao, L, X. Xie, W. M. Wang, 2013, Crustal flow pattern beneath the Tibetan Plateau constrained by regional Lg-wave Q tomography, *Earth & Planetary Science Letters*,** 383**, 113-122, DOI: 10.1016/j.epsl.2013.09.038.

Zhao, L., X. Xie and W. Wang, et al., 2013, Crustal LG attenuation within the North China Craton and its surrounding regions, *Geophysical Journal International*, **195**, 513-531, DOI: 10.1093/gji/ggt235.

Xie, X., Y. He and P. Li, 2013, Seismic illumination analysis and its applications in seismic survey design, *Chinese Journal of Geophysics - Chinese Edition*,** 56**, 5, DOI: 10.6038/cjg20130515.

Fan, N., L. Zhao, X. Xie, et al., 2013, Measurement of Rayleigh-wave magnitudes for North Korean nuclear tests, *Chinese Journal of Geophysics - Chinese Edition*, **56**, 3, DOI: 10.6038/cjg20130319.

Yan, R. and X.B. Xie, 2012, An angle-domain imaging condition for elastic reverse time migration and its application to angle gather extraction, *Geophysics*,** 77**, 5, doi:10.1190/GEO2011-0455.1.

Zhao, L.F., X.B. Xie, W.M. Wang, et al., 2012, Yield estimation of the 25 May 2009 North Korea Nuclear Explosion, *Bulletin of the Seismological Society of America*,** 102**, 2, doi:10.1785/0120110163.

Avants, M., T. Lay, X.B. Xie, and X. Yang, 2011, Effects of 2D random velocity heterogeneities in the mantle lid and Moho topography on Pn geometric spreading, *Bull. Seism. Soc. Am.*,** 101**, 126-140, doi:10.1785/0120100113.

Zhao, L.F., X.B. Xie, W.M. Wang, J.H. Zhang, and Z.X. Yao, 2010, Seismic Lg wave Q tomography in and around Northeast China, *J. Geophys. Res.*,** 115**, B08307, doi:10.1029/2009JB007157.

Wu, R.S., and X.B. Xie, 2009, Modeling primaries of acoustic/elastic waves by one-return approximation, *The Leading Edge*,** 28**, 576-581.

Xie, X.B., 2009, The sensitivity of finite-frequency signal to velocity model errors: applications in migration velocity model building, 318-326, in: *Collected Papers in Applied Geophysics in China, edited by Wencai Yang, Academic Press of Shanghai, Shanghai, China*, in Chinese.

Xie, X.B., and H.Yang, 2008, The finite-frequency sensitivity kernel for migration residual moveout and its applications in migration velocity analysis, *Geophysics*,** 73**, S241-S249.

Wu, R.S., and X.B. Xie, 2008, Seismic wave scattering, in* The Earthquake Hazard Prevention and Reduction Encyclopedia*, in Chinese.

Xie, X.B., and R.S. Wu, 2008, Seismic wave attenuation, in *The Earthquake Hazard Prevention and Reduction Encyclopedia*, in
Chinese.

Zhao, L.F., X.B. Xie, W.M. Wang, and Z.X. Yao, 2008, The regional seismic characteristics of the October 9, 2006 North Korean nuclear test, *Bull. Seism. Soc. Am.*,** 98**, 2571-2589, doi: 10.1785/0120080128.

He, Y., X.B. Xie,and T. Lay, 2008, Explosion source energy partitioning and Lg-wave excitation: contributions of free surface scattering, *Bull. Seism. Soc. Am*., **98**, 778-792, doi: 10.1785/0120070119.

Yang, X., T. Lay, X.B. Xie, and M.S. Thorne, 2007, Geometric Spreading
of Pn and Sn in a spherical Earth model, *Bull. Seism. Soc. Am.* **97**, 2053-2065, doi: 10.1785/0120070031

Xie, X.B., S.W. Jin and R.S. Wu, 2006, Wave
equation based seismic illumination analysis, *Geophysics*,
**71**, S169-177.

Wu, R.S., X.B. Xie, and X.Y. Wu, 2006, One-way and one-return
approximations (dewolf approximation) for fast elastic wave modeling in complex
media, *Advances in Wave Propagation in Heterogeneous Earth*, Elsevier, 265-322.

Wu, R.S., X.Y. Wu, and X.B. Xie, 2006, Simulation of high-frequency wave
propagation in complex crustal waveguides using generalized screen propagators, *Advances in Wave Propagation in Heterogeneous
Earth*, Elsevier, 323-363.

Xie, X.B., Ge, Z., and Lay, T.,2005, Investigating explosion source energy
partitioning and Lg-wave excitation using a finite-difference plus slowness
analysis method, *Bull. Seism.
Soc. Am*. **95**, 2412-2427.

Xie, X.B. and Wu, R.S., 2005, Multicomponent prestack depth migration using elastic screen method, *Geophysics*, **70**, S30-37.

Xie, X.B., and R.S. Wu, 2001, Modeling elastic wave forward propagation and reflection using the complex screen method, *J. Acoust. Soc. Am.*, **109**, 2629-2635.

Wu, R.S., S. Jin, and X.B. Xie, 2001, Generalized screen propagators and the applications to seismic imaging, *Geophysical Prospecting*, 36, 655-664
(in Chinese with English abstract).

Wu, R.S., S. Jin, and X.B. Xie, 2000, Seismic wave propagation and scattering in heterogeneous crustal waveguides using screen propagators: I SH waves, *Bull.
Seism. Soc. Am.*, **90**, 401-413.

Wu, R.S., S. Jin, and X.B. Xie, 2000, Energy partition and attenuation of Lg waves by numerical simulations using screen propagators, *Phys, Earth Planet. Inter.*, **120**, 227-244.

Jin, S., R.S. Wu, X.B. Xie, and Z. Ma, 1998, Wave equation-based decomposition and imaging for multicomponent seismic data, *Journal of Seismic Exploration*, **7**, 145-158.

Xie, X.B. and Lay, T., 1995, The log(RMS lg)-mb scaling law slope, *Bull. Seism. Soc. Am*, **85**, 834-844.

Wu, R.S. and Xie, X.B., 1994, Multi-screen backpropagator for fast 3D elastic prestack migration, in: Mathematical Methods, in *Geophysical Imaging II, SPIE Proceedings
Series*, **2301**, 181-193.

Xie, X.B. and Lay, T., 1994, The excitation of explosion Lg, a finite-difference investigation, *Bull. Seis. Soc. Am*, **84**,
324-342.

Xie, X.B. and Wu, R.S., 1992, Coherence analysis on seismic array and spectral imaging of random heterogeneities, in: Annual Review of Progresses in Geophysics, Beijing.

Flatte, S.M. and Xie, X.B., 1992, The Transverse coherence function at NORSAR over a wide range of separations, *Geophys. Res. Lett*., **19**, 557-560.

Cao, B.R., Xie, X.B. and Yao, Z.X., 1992, Modeling long period Pnl waveform at regional range in dipping structure, *Acta Geophysica Sinica*, **35**, 185-192.

Xie, X.B., Zheng, T.Y. and Yao, Z.X., 1992, Methods of synthetic seismograms --A review, *Acta Geophysica Sinica*, **35**, 790-799.

Wu, R.S. and Xie, X.B., 1991, Numerical test of stochastic tomography, *Phys.
Earth Planet. Inter*., **67**, 180-193.

Xie, X.B. and Yao, Z.X., 1991, The Faulting process of Tangshan earthquake inverted simultaneously from the teleseismic waveforms and geodesic deformation data, *Phys. Earth Planet. Inter*., **66**, 265-277.

Ye, Z.R., Teng, C.K. and Xie, X.B., 1991, Shear heating instability and its application to the study of mechanism of deep focus earthquakes, *Chinese J. Geophys*., **34**, 153-160.

Xie, X.B. and Yao, Z.X., 1989, A generalized reflection-transmission
coefficient matrix method to calculate static displacement field of stratified
half-space by dislocation source, *Chinese J. Geophys*., **32**, 191-205.

Xie, X.B. and Yao, Z.X., 1989, Simultaneous inversion method for
investigating the faulting process from the seismic data, in: *Progress of Geophysics in China 1980s, Academic Periodical Press, Beijing.*

Xie, X.B. Chen, Y. and Yan, W., 1988, A new method to
determine Q of the rock sample in a servo-controlled testing machine, in: *The Physical Properties of the Rock and
Minerals*, Seismological Press, Beijing (in Chinese).

Xie, X.B. and Yao, Z.X., 1988, P-SV wave responses for a point source in two-dimensional heterogeneous media: finite-difference method, *Chinese J. Geophys*., **31**, 473-493.

Xie, X.B., 1988, Method of Synthetic Seismograms and Their Applications for Investigating Seismic Source Processes, Ph.D Thesis, Institute of Geophysics, Chinese Academy of Sciences, Beijing.

Xie, X.B. and Yao, Z.X., 1987, Near field strong motion simulation of the June 9, 1976 Longling Yunnan, magnitude 6.2 aftershock,* Acta
Geophysica Sinica*, **30**, 159-168.

Ye, Z.R. and Xie, X.B., 1985, The isostasy and crustal density structure of Panzhihua-Xichang region in southwestern China, * Acta Geophysica Sinica*, **28**, 260-267.

*Xie, X.B., 1985, Non-elasticity of the medium inside
the earth, Seismological and Geomagnetic Observation and Research*, **6** (6), 7-13.

Guo, Z.Q. and Xie, X.B., 1982, The creep property of
the earth's mantle, *Acta Geophysica Sinica*, **25**, 304-314.

Gu, J.C., Xie, X.B. and Zhao, L., 1982, On spatial distribution
of large aftershocks of the sequence of major earthquakes and preliminary
theoretical explanation, *Acta Seismologica Sinica*, **4**, 380-388.

Gu, J.C., Xie, X.B. and Zhao, L., 1979, On temporal
distribution of large aftershocks of the sequence of earthquakes and preliminary theoretical explanation, *Acta Geophysica Sinica*, **22**, 32-46.

**Partially Peer Reviewed Expanded Abstracts (SEG/EAGE/CPS)**

Xie, X.B., and J. Pajchel, 2014, Velocity tomography based on turning waves and finite-frequency sensitivity kernels, CPS/SEG Beijing 2014 International Geophysical Conference, accepted.

Geng, Y., and X.B. Xie, 2014, Gaussian beam based sensitivity kernel calculation and its applications in turning wave tomography, CPS/SEG Beijing 2014 International Geophysical Conference, accepted.

Yan, R.S Wu, X.B. Xie, and D. Walraven, 2013, A hybrid elastic one-way propagator for strong-constrast media and its application to subsalt migration, 83th Annual International Meeting, SEG, Expanded Abstracts, 3815-3819.

Yan, X.B. Xie, R.S. Wu and H. Guan, 2013, Acquisition aperture correction in angle-domain towards the true-reflection RTM, 83th Annual International Meeting, SEG, Expanded Abstracts, 3989-3994.

Liu,Y, H. Luo, Y. Quan, and X.B. Xie, 2013, Frequency-domain crosswell reverse time migration with up- and downgoing wave separation, 83th Annual International Meeting, SEG, Expanded Abstracts, 4043-4048.

Xie, X.B., 2013, Recover certain low-frequency information for full waveform inversion, 83th Annual International Meeting, SEG, Expanded Abstracts, 1053-1057.

Xie, X.B., 2013, Seismic wave scattering in 3D random media: A finite-difference simulation and slowness domain analysis, 83th Annual International Meeting, SEG, Expanded Abstracts, 3428-3432.

Yan, R., and X.B. Xie, 2012, AVA analysis based on RTM angle-domain common image gather, 82th Annual International Meeting, SEG, Expanded Abstracts, segam2012-0521.1.

Yan, R., and X.B. Xie, 2011, Angle gather extraction for acoustic and isotropic elastic RTM, 81th Annual International Meeting, SEG, Expanded Abstracts 30, 3141-3146.

Xie, X.B., 2011, Calculating finite-frequency sensitivity kernels using the Gaussian beam method, 81th Annual International Meeting, SEG, Expanded Abstracts 30, 3892-3897.

Yan, R., and X.B. Xie, 2010, The new angle-domain imaging condition for elastic RTM, 80th Annual International Meeting, SEG, Expanded Abstracts, 29, 3181-3186.

Wu, R.S., R. Yan, X.B. Xie, and D. Walraven, 2010, Elastic converted-wave path migration for subsalt imaging, 80th Annual International Meeting, SEG, Expanded Abstracts, 29, 3176-3180

He, Y., and X.B. Xie, 2010, Velocity analysis using shot-indexed sensitivity kernels: application to a complex geological model, 80th Annual International Meeting, SEG, Expanded Abstracts, 29, 4082-4087.

Yang, H., X.B. Xie, and Y. He, 2009, Velocity analysis for plane-wave source migration using the finite-frequency sensitivity kernel, 79th Annual International Meeting, SEG, Expanded Abstracts, 3670-3674.

Yan, R., and X.B. Xie, 2009, A new angle-domain imaging condition for prestack reverse-time migration, 79th Annual International Meeting, SEG, Expanded Abstracts, 2784-2788.

Xu, W, and X.B. Xie, 2009, How serious is the nonlinear effect on traveltime delays predicted by sensitivity kernels, 79th Annual International Meeting, SEG, Expanded Abstracts, 4049-4053.

Xie, X.B., and H. Yang, 2009, Finite-frequency sensitivity analysis and migration velocity updating, CPS/SEG Beijing 2009, International Geophysical Conference, Expanded Abstracts, ID: 7.

He, Y., X. B. Xie, and H. Yang, 2009, Angle-domain sensitivity kernels for migration velocity analysis: comparison between theoretically derived and directly measured, 79th Annual International Meeting, SEG, Expanded Abstracts, 2909-2913.

Xie, X.B., and H. Yang, 2008, A wave-equation migration velocity analysis approach based on the finite-frequency sensitivity kernel, 78th Annual International Meeting, SEG, Expanded Abstracts, 3093-3097.

Yang, H., X.B. Xie, S. Jin and M. Luo, 2008, Target oriented full-wave equation based illumination analysis, 78th Annual International Meeting, SEG, Expanded Abstracts, 2216-2220.

Xie, X.B., and H. Yang, 2008, A full-wave equation based seismic illumination analysis method, *70th Conference Technical Exhibition,EAGE, Expanded Abstracts, *P284.

Xie, X.B. and H. Yang, 2007, A migration velocity updating method based on the shot index common image gather and finite-frequency sensitivity kernel, *77th Annual International Meeting, SEG, Expanded Abstracts*, 2767-2771.

Xie, X.B. and R.S. Wu, 2006, A depth migration method based on the full-wave reverse-time calculation and local one-way propagation, * 76thAnnual International Meeting, SEG, Expanded Abstracts*, 2333-2337.

R.S., X.B. Xie, M. Fehler and L. Huang, 2006, Resolution analysis of seismic imaging, *68th Conference & Technical Exhibition,EAGE, Expanded Abstracts, *GO48.

R.S.,Wu, M. Fehler and L. Huang, 2005, Seismic resolution and illumination: A wave-equation-based analysis, *75th Annual International Meeting, SEG, Expanded Abstracts*, 1862-1865.

Fehler, M., L. Huang, R.S. Wu, and X.B. Xie, 2005, Seismic image resolution: numerical investigation of role of migration imaging operator,* Annual International Meeting, SEG, Expanded Abstracts*, 1870-1873.

Luo, M., R.S. Wu, and X.B. Xie, 2005, True amplitude one-way propagators implemented with localized corrections on beamlets, *75th Annual International Meeting, SEG, Expanded Abstracts*, 1966-1969.

Xie, X.B. and Wu, R.S., 2004, Multicomponent depth migration for a modified 2D elastic salt model, *SEG/EAGE Beijing 2004, International Geophysical Conference, Expanded Abstracts*.

Xie, X.B., S. Jin and R.S. Wu, 2004, Wave
equation based illumination analysis, *74th Annual International Meeting, SEG, Expanded Abstracts*,
933-936.

Luo, M., J. Cao, X.B. Xie and R.S. Wu, 2004, Comparison
of illumination analysis using one-way and full-wave propagators, *74th Annual International Meeting, SEG, Expanded Abstracts*, 67-70.

Luo, M., R.S. Wu, and X.B. Xie, 2004, Beamlet
migration using local cosine basis with shifting windows, *74th Annual International Meeting, SEG,
Expanded Abstracts*, 945-948.

Wu, R.S., M. Luo, S. Chen and X.B. Xie, 2004, Acquisition
aperture correction in angle-domain and true-amplitude imaging for wave
equation migration, *74th
Annual International Meeting, SEG, Expanded Abstracts*, 937-940.

Xie, X.B., S. Jin, and R.S. Wu, 2003, Three-dimensional
illumination analysis using wave equation based propagator, *73rd Annual International Meeting, SEG, Expanded Abstracts*, 989-992.

Wu, R.S., L. Chen, and X.B. Xie, 2003, Directional
illumination and acquisition dip-response, *65th Conference and Technical Exhibition, EAGE, Expanded
Abstracts*, P147.

Xie, X.B., and R.S. Wu, 2002, Extracting
angle domain information from migrated wavefield, *72nd Annual International Meeting, SEG, Expanded Abstracts*, 1360-1363.

Xie, X.B., and R.S. Wu, 2001, Migration
of multicomponent seismic data using elastic screen method, *71st Annual International Meeting, SEG, Expanded Abstracts*, 1069-1072.

Xie, X.B., S. Jin, and R.S. Wu, 2001, 3D prestack depth migration using generalized screen propagators, *63rd Conference and Technical Exhibition, EAGE, Expanded
Abstracts*, P061.

Xie, X.B, C.C. Mosher, and R.S. Wu, 2000, The application of wide angle screen propagator to 2D and 3D depth migrations, *70th Annual International Meeting, SEG, Expanded Abstracts*, 878-881.

Wu, R.S., S. Jin, X.B. Xie, and C.C. Mosher, 2000, 2D and 3D
generalized screen migrations, *62nd
Conference and Technical Exhibition, EAGE, Expanded Abstracts*, B-15.

Xie, X.B., and R.S. Wu, 1999, Improving
the wide angle accuracy of the screen propagator for elastic wave propagation,* Annual International Meeting, SEG, Expanded Abstracts*, 1863-1866.

Mignet, F.C. and X.B. Xie, 1999, Wide angle screen method applied to pre-stack migration of a 2D synthetic salt-like model, *69th Annual Meeting, SEG, Expanded Abstracts*, 1536-1539.

Xie, X.B., and R.S. Wu, 1998, Improve the wide angle accuracy of screen method under large contrast, *68th Annual Meeting, SEG, Expanded Abstracts*, 1811-1814.

Xie, X.B. and R.S. Wu, 1998, Modeling reflections with an elastic
screen method, *SEG/EAGE/CPS Beijing 1998, International Geophysical
Conference, Expanded Abstracts*, 234-237.

Xie, X.B. and R.S. Wu, 1997, Free surface boundary condition and the source term for one-way elastic wave method,
*67th Annual International Meeting, SEG, Expanded
Abstracts*, 1854-1857.

Xie, X.B. and R.S. Wu, 1996, 3D elastic wave modeling using the complex screen method, *66th Annual International Meeting, SEG, Expanded Abstracts*, 1247-1250.

Xie, X.B. and Wu, R.S., 1995, A complex-screen method for modeling elastic wave reflections, *65th Annual International Meeting, SEG, Expanded Abstracts*, 1269-1272.

Wu, R.S., Huang, L.J. and Xie, X.B., 1995, Backscattered wave calculation using the De Wolf approximation and a phase-screen propagator, 65th Annual International Meeting, SEG, Expanded Abstracts, 1293-1296

Wu, R.S. and Xie, X.B., 1994, Separation of scattering and absorption in 1D random media: II. Numerical experiments on stationary problems, 64th Annual International Meeting, SEG, Expanded Abstracts, 1302-1305.

Wu, R.S. and Xie, X.B., 1993, A complex-screen method for elastic wave one-way propagation in heterogeneous media, *Expanded abstracts of the 3rd International
Congress of the Brazilian Geophysical Society*.

**Technical Reports in Proceedings**

Lay, T., M. Avants, X.B. Xie, and A.J. Rodgers, 2012, Effects of 3D surface topography on regional and teleseismic signals from underground explosions,* Proceedings of the 2012 Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies*, 419-427.

Lay, T., M. Avants, X.B. Xie, and A.J. Rodgers, 2011, Effects of 2D surface topography on regional and teleseismic signals from underground explosions, *Proceedings of the 33rd Monitoring Research Review: Ground-Based Nuclear Explosion Monitoring Technologies , 91-97.*

Lay, T., X.B. Xie and X. Yang, 2009, Development of regional phase tomographic attenuation models for Eurasia, *Proceedings of the 31st Monitoring Research Review: Ground-based Nuclear Explosion Monitoring Technologies*, 101-110

Lay, T., X.B. Xie and X. Yang, 2008, Development of regional phase
tomographic attenuation models for Eurasia, *Proceedings of the 30th
Monitoring Research Review: Ground-based Nuclear Explosion Monitoring
Technologies*, submitted.

Xie, X.B., T. Lay, R.S. Wu, and Y. He, 2007, Near source energy
partitioning for regional waves in 2d and 3d models, effects from random free
surface scattering, *Proceedings of the 29th Monitoring Research Review:
Ground-based Nuclear Explosion Monitoring Technologies*, 322-332.

Lay, T., X.B. Xie, X. Yang, and M. Arrowsmith, 2007, Development of
regional phase tomographic attenuation models for Eurasia, *Proceedings of
the 29th Monitoring Research Review: Ground-based Nuclear Explosion Monitoring
Technologies*, 100-110.

Xie, X.B., T. Lay, R.S. Wu, and Y. He, 2006, Near source energy
partitioning for regional waves in 2d and 3d models, contributions of free
surface scattering, *Proceedings of the 28th Seismic Research Review:
Ground-based Nuclear Explosion Monitoring Technologies*, 304-314.

Lay, T., X. Yang, X.B. Xie, S. Taylor, and M. Arrowsmith, 2006,
Development of regional phase tomographic attenuation models for Eurasia, *Proceedings
of the 28th Seismic Research Review: Ground-based Nuclear Explosion Monitoring
Technologies*, 71-81.

Xie, X.B., T. Lay, and R.S. Wu, 2005, Near source energy partitioning for
regional waves in 2d and 3d models, contributions of S*-to-Lg and P-to-Lg
scattering, *Proceedings of the 27th Seismic Research Review: Ground-based
Nuclear Explosion Monitoring Technologies*, 249-258.

Lay, T., X.B. Xie, X. Yang, S. Taylor, and W. Phillips, 2005, Development
of regional phase tomographic attenuation models for Eurasia, *Proceedings of the 27th Seismic Research
Review: Ground-based Nuclear Explosion Monitoring Technologies*, 53-60.

Wu, R.S., X.B. Xie, Z. Ge and T. Lay, 2004, quantifying source excitation and path effects for high frequency
regional waves, *Proceedings of the 26th Seismic Research Review, Trends in Nuclear
Explosion Monitoring*, 191-201.

Wu, R.S., X.B. Xie, X. Wu and T. Lay, 2003, Quantifying source excitation and path effects for high frequency regional waves, *Proceedings of the 25th Seismic Research Review,
Nuclear Explosion Monitoring: Building the Knowledge Base*, 173-181.

Wu, R.S., X.B. Xie, X. Wu and T. Lay, 2002, Quantifying source excitation and path effects for high frequency regional waves, *Proceedings of the 24th Seismic Research Review, Nuclear Explosion Monitoring: Innovation and Integration*, 209-218.

Wu, R.S., X.B. Xie, and X. Wu, 2000, Seismic wave propagation and scattering in heterogeneous crustal waveguides using screen propagators: P-SV waves, *Proceedings of the 22nd Annual Seismic Research Symposium on Monitoring a CTBT*, 683-693.

Lay, T., G. Fan, R.S. Wu and X.B. Xie, 1999, Path corrections for
regional phase discriminants,* Proceedings
of the 21st Annual Seismic Research Symposium on Monitoring a CTBT*,
510-519.

Wu, R.S., X.B. Xie and X.Y. Wu, 1999, Lg wave simulations in
heterogeneous crusts with irregular topography using half-space screen
propagators, *Proceedings of the 21st Annual Seismic Research Symposium on
Monitoring a CTBT*, 683-693.

Wu, R.S., X.B. Xie, S. Jin, L. Fu and T. Lay, 1998, Seismic wave
propagation and scattering, in heterogeneous crustal waveguides using screen
propagators, *Proceedings of the 20th Annual Seismic Research symposium on
Monitoring a CTBT*, 213-222.

Wu, R.S., S., Jin, X.B. Xie and T. Lay, 1997, Verification and
applications of GSP (Generalized Screen Propagators) method for regional wave
propagation, *Proceedings of the 19th Annual Seismic Research Symposium on
Monitoring a CTBT*, 552-561.

Wu, R.S., S. Jin and X.B. Xie, 1996, Seismic wave propagation and
scattering in heterogeneous crustal waveguides using screen propagators: I
SH-waves, 291-300, *Proceedings of the 18th Annual Seismic Research Symposium
on Monitoring a CTBT*, 4-6 September 1996.

*Wu, R.S., T. Lay, X.B. Xie and L.J. Huang, 1995, Synthetic
seismograms in heterogeneous media and study of formation and propagation of
regional phases, Proceedings of the 17th
Seismic Research Symposium,* September 12-15, 1995, Scottsdale, AZ, 531-538.

Lay, T., Xie, X.B. and Zhang, T., 1993, Lg propagation in Eurasia, Proceedings of the 15th Annual PL/DARPA Seismic Research Symposium, September 8-10, 1993, Vail, Colorado, 234-240.

Lay, T., Xie, X.B. and Zhang, T., 1992, Lg propagation in Eurasia,
*Proceedings of the 14th Annual PL/DARPA
Seismic Research Symposium*, September 16-18, 1992, Tucson, Arizona,
274-281.

Flatte, S.M., Xie, X.B. and Zhang, T., 1991, The effect of
small-scale heterogeneities for teleseismic and regional high-frequency
propagation, *Proceedings of the 13th
Annual PL/DARPA Seismic Research Symposium*, October 8-10, 1991, Keystone,
CO, 187-193.

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