Garnero, Edward J. and D. V. Helmberger, 1995. On seismic resolution of lateral heterogeneity in the Earth's outermost core, Phys. of the Earth & Planet. Inter. 88, 117-130.

Garnero, Edward J. and D. V. Helmberger, 1995. A very slow basal layer underlying large-scale low-velocity anomalies in the lower mantle beneath the Pacific: evidence from core phases, Phys. Earth & Planet. Inter., 91, 161-176.

Mori, Jim and D. V. Helmberger, 1995. Localized boundary layer below the mid-Pacific velocity anomaly identified from a PcP precursor, J. Geophys. R., 100, No. B10, 20,359-20,365.

Scrivner, Craig W. and D. V. Helmberger, 1995. Preliminary Work on an Early Warning and Rapid Response Program for Moderate Earthquakes, Bull. Seismol. Soc. Am., 85, No. 4, 1257-1265.

Song, Xiaodong and D. V. Helmberger, 1995. Depth dependence of anisotropy of Earth's inner core, J. Geophys. Res., 100, No. B7, 9805-9816.

Song, Xiaodong and D. V. Helmberger, 1995. A P-wave Velocity Model of the Earth's core, J. Geophys. Res., 100, No. B7, 9817-9830.

Song, Xi J., L. E. Jones, and D. V. Helmberger, 1995. Source Characteristics of the 17 January 1994 Northridge, California Earthquake from Regional Broadband Modeling, Bull. Seismol. Soc. Am., 85, No. 6, 1591-1603.

Garnero, Edward J. and D. V. Helmberger, 1996. Seismic detection of a thin laterally varying boundary layer at the base of the mantle beneath the central-Pacific, Geophys. Res. Lett., 23, No. 9, 977-980.

Helmberger, D. V., E. J. Garnero, and X. Ding, 1996. Modeling two-dimensional structure at the core-Mantle Boundary, J. Geophys. Res., 101, No. B6, 13,963-13,972.

Helmberger, D. V. and B. Woods, 1996. Regional Source Parameters, Seismic Energy, and Discrimination, in Monitoring a Comprehensive Test Ban Treaty, edited by E. S. Housebye and A. M. Dainty, Kluwer Academic Publishers, 365-383.

Jones, Laura E. and D. V. Helmberger, 1996. Seismicity and stress-drop in the eastern Transverse ranges, Southern California, Geophys. Res. Lett., 23, No. 3, 233-236.

Mori, Jim and D. V. Helmberger, 1996. Large Amplitude Moho reflections (SmS) from Landers Aftershocks, Southern California, Bull. Seismol. Soc. Am., 86, 1845-1852.

Song, Xi J. and D. V. Helmberger, 1996. Source Estimation of Finite Faults from Broadband Regional Networks, Bull. Seismol. Soc. Am., 86, No. 3, 797-804.

Song, Xi J., D. V. Helmberger and L. Zhao, 1996. Broad-band modeling of regional seismograms: the Basin and Range crustal structure, Geophys. J. Int., 125, 15-29.

Zhao, Lian-She and D. V. Helmberger, 1996. Regional Moments, Energy Levels, and a New Discriminant, Pure Appl. Geophys., 146, No. 2, 281-304.

Zhu, Lupei and D. V. Helmberger, 1996. Intermediate depth earthquakes beneath the India-Tibet collision zone, Geophys. Res. Lett., 23, No. 5, 435-438.

Zhu, Lupei and D. V. Helmberger, 1996. Advancement in Source Estimation Techniques Using Broadband Regional Seismograms, Bull. Seismol. Soc. Am., 86, No. 5, 1634-1641.

Helmberger, D. V., L. S. Zhao and E. J. Garnero, 1996. Construction of Synthetics for 2D structures; core phases, in Seismic Modeling of Earth Structure, Enzo Boschi, Goran Ekstrom and Morelli (Eds.).

Wen, Lianxing and D. V. Helmberger, 1997. Propagational corrections for basin structure: Landers earthquake, Bull. Seismol. Soc. Am., 87, No. 4, 782-787.

Ding, Xiaoming and D. V. Helmberger, 1997. Modeling D" structure beneath Central America with broadband seismic data, Phys. Earth Planet. Inter., 101, 245-270.

Pino, N. Alessandro and D. V. Helmberger, 1997. Upper Mantle Compressional Velocity Structure Beneath the West Mediterranean Basin, J. Geophys. Res., 102, No. B2, 2953-2967.

Saikia, C. K. and D. V. Helmberger, 1997. Approximation of Rupture Directivity in Regional Phases Using Up-Going and Down-Going Wavefields, BSSA, 87, No. 4, 987-998.

Song, Xi J. and D. V. Helmberger, 1997. The Northridge aftershocks, a source study with TERRAscope data, Bull. Seismol. Soc. Am., 87, No. 4, 1024-1034.

Song, Xiadong and D. V. Helmberger, 1997. PKP differential travel times: Implications for three-dimensional lower mantle structure, Geophys. Res. Lett., 24, 1863-1866.

Woods, B. B. and D. V. Helmberger, 1997. Regional Seismic Discriminants using Wavetrain Energy Ratios, Bull. Seismol. Soc. Am., 87, No. 3, 589-605.

Zhu, Lupei, D. V. Helmberger, C. K. Saikia, and B. B. Woods, 1997. Regional waveform calibration in the Pamir-Hindu Kush region, J. Geophys. Res., 102, No. B10, 22,799-22,813.

Garnero, E. J. and D. V. Helmberger, 1998. Further structural constraints and uncertainties of a thin laterally varying ultralow-velocity layer at the base of the mantle, J. Geophys. Res., 103, No. B6, 12,495-12,509.

Helmberger, D. V., L. Wen, and X. Ding, 1998. Seismic evidence that the source of the Iceland hotspot lies at the core-mantle boundary, Nature, 396, 251-255.

Jones, Laura E. and D. V. Helmberger, 1998. Earthquake Source Parameters and Fault Kinematics in the Eastern California Shear Zone, Bull. Seismol. Soc. Am., 88, No. 6, 1337-1352.

Melbourne, Tim and D. V. Helmberger, 1998. Fine Structure of the 410 km Discontinuity, J. Geophys. Res., 103 (B5), 10,091-10,102.

Ni, Sidao, X. Ding, and D. V. Helmberger, 1998. Deep mantle upwelling beneath South Africa, submitted to Earth and Planet. Sci. Lett.

Ritsema, Jeroen, S. Ni, and D. V. Helmberger, 1998. Evidence for strong shear velocity reductions and velocity gradients in the lower mantle beneath Africa, Geophys. Res. Lett., 25, No. 23, 4245-4248.

Sato, T. and D. V. Helmberger, 1998. Estimates of Regional and Local Strong Motions during the Great 1923 Kanto, Japan Earthquake (M=8.1). Part 1: Source Estimation of a Calibration Event and Modeling of wave propagation paths, Bull. Seismol. Soc. Am., 88, 183-205.

Sidorin, Igor, M. Gurnis, D. V. Helmberger, and X. Ding, 1998. Interpreting D" seismic structure using synthetic waveforms computed from dynamic models, Earth and Planet. Sci. Lett., 163, 31-41.

Song, Xi J. and D. V. Helmberger, 1998. Pseudo Green's Functions and Waveform Tomography, Bull. Seismol. Soc. Am., 88, No. 1, 304-312.

Song, Xiaodong, and D. V. Helmberger, 1998. Seismic Evidence for an Inner Core Transition Zone, Science, 282, 924-927.

Wen, Lianxing and D. V. Helmberger, 1998. Ultra-Low Velocity Zones Near the Core-Mantle Boundary from Broadband PKP Precursors, Science, 279, 1701-1703.

Wen, Lianxing and D. V. Helmberger, 1998. A two-dimensional P-SV hybrid method and its application to modeling localized structures near the core-mantle boundary, J. Geophys. Res., 103, No. B8, 17,901-17,918.

Zhu, Lupei and D. V. Helmberger, 1998. Moho Offset Across the Northern Margin of the Tibetan Plateau, Science, 281, 1170-1172.

Ni, Sidao, X. Ding, D. V. Helmberger, and M. Gurnis, 1999. Low-velocity structure beneath Africa from forward modeling, Earth and Planet. Sci. Lett., 170, 497-507.

Scrivner, Craig W. and D. V. Helmberger, 1999. Finite Difference Modeling of Two Aftershocks of the 1994 Northridge, California Earthquake, Bull. Seismol. Soc. Am., 89, 6, 1505-1518.

Scrivner, Craig W. and D. V. Helmberger, 1999. Variability of Ground Motions in Southern California - Data from the 1995-1996 Ridgecrest Sequence, Bull. Seismol. Soc. Am., 89, 3, 626-639.

Sidorin, Igor, M. Gurnis, and D. V. Helmberger, 1999. Dynamics of a phase change at the base of the mantle consistent with seismological observations, J. Geophys. Res., 104, No. B7, 15,005-15,023.

Sidorin, Igor, M. Gurnis, and D. V. Helmberger, 1999. Evidence for a Ubiquitous Seismic Discontinuity at the Base of the Mantle, Science, 286, 1326-1331.

Chen, Ji, D. V. Helmberger, and D. J. Wald, 2000. Basin Structure Estimation by Waveform Modeling: Forward and Inversion Methods, Bull. Seismol. Soc. Am., 90, 4, 964-976.

Chen, Ji, D. J. Wald, and D. V. Helmberger, 2000. Source description of the 1999 Hector Mine, California earthquake, Part I: Wavelet Domain Inversion Theory and Resolution Analysis, and Part II: Complexity of Slip History, submitted to BSSA.

Chen, Ji, D. J. Wald, and D. V. Helmberger, 2000. Source description of the 1999 Hector Mine, California earthquake, Part 1: Wavelet Domain Inversion Theory and Resolution Analysis, submitted to BSSA.

Helmberger, D. V., X. J. Song, and L. Zhu, 2000. Crustal Complexity from Regional Waveform Tomography: Landers Aftershocks, JGR, in press.

Helmberger, D. V., S. Ni, L. Wen, and J. Ritsema, 2000. Seismic Evidence for Ultra Low Velocity Zones beneath Africa and Eastern Atlantic, JGR, 105, No. B10, 23,865-23,878.

Luo, Shang-Nian, S. Ni, and D. V. Helmberger, 2000. Evidence for sharp lateral variation of velocity at the Core-Mantle-Boundary from multipathed PKPab, to be submitted to Science.

Melbourne, T. and D. V. Helmberger, 2000. East-Pacific-Rise Shear model; TNA revisited, JGR, in press.

Melbourne, T. and D. V. Helmberger, 2000. Lithospheric Control of Plate Boundary Deformation, submitted to Nature.

Ni, Sidao, X. Ding, and D. V. Helmberger, 2000. Constructing Synthetics from Deep Earth Tomographic Models, Geophys. J. Int., 140, 71-82.

Ni, Sidao and D. V. Helmberger, 2000. Horizontal transition from fast (slab) to slow (plume) structures at the Core-Mantle Boundary, submitted to EPSL.

Ni, Sidao and D. V. Helmberger, 2000. Probing an Ultra-low velocity zone at the Core Mantle Boundary with P and S Waves, to be submitted to GRL.

Savage, Brian and D. V. Helmberger, 2000. Kursh Explosion, to be submitted to BSSA.

Helmberger, D. V., X. J. Song, And L. Zhu, 2001. Crustal complexity from regional waveform tomography: Afyershocks of the 1992 Landers earthquake, California, J. Geophys. Res., 106, No. B1, 609-620.

Ji, Chen, D. V. Helmberger, T.-R. Song, K.-F. Ma, and D.J. Wald, 2001. Slip distribution and tectonic implication of the 1999 Chi-Chi, Taiwan, Earthquake, J. Geophys. Res. Lett., 28, No. 23, 4379-4382.

Luo, Shang-Nian, S. Ni, and D. V. Helmberger, 2001. Evidence for a sharp lateral variation of velocity at the core-mantle boundary from multipathed PKPab, Earth Planet. Sci. Lett., 189, 155-164.

Melbourne, T. and D. V. Helmberger, 2001. Mantle Control of Plate Boundary deformation with P and S Waves, Geophys. Res. Lett., 28, No. 20, 4003-4006.

Ni, Sidao and D. V. Helmberger, 2001. Probing an Ultra-low velocity zone at the Core Mantle Boundary with P and S Waves, Geophys. Res. Lett., 28, No. 12, 2345-2348.

Ni, Sidao and D. V. Helmberger, 2001. Horizontal transition from fast (slab) to slow (plume) structures at the Core-Mantle Boundary, Earth Planet. Sci. Lett., 187, 301-310.

Savage, Brian and D. V. Helmberger, 2001. Kursk Explosion, Bull. Seismol. Soc. Am., 91, No. 4, 753-759.

Ji, Chen, D. Wald, and D. V. Helmberger, 2002. Source Description of the 1999 Hector Mine, California Earthquake; Part I: Wavelet Domain Inversion Theory and Resolution Analysis, Bull. Seismol. Soc. Am., 92, No. 4, 1192-1207.

Ji, Chen, D. Wald, and D. V. Helmberger, 2002. Source Description of the 1999 Hector Mine, California Earthquake; Part II: Complexity of Slip History, Bull. Seismol. Soc. Am., 92, No. 4, 1208-1226.

Melbourne, T. and D. V. Helmberger, 2002. Whole mantle shear structure beneath the East-Pacific-Rise, J. Geophys. Res., 107, No. B9, 2204, 10-1/10-16.

Ni, Sidao, Eh Tan, M. Gurnis, and D. V. Helmberger, 2002. Sharp Sides to the African Superplume, Science, 296, 1850-1852.

Ji, Chen, D. V. Helmberger, D. J. Wald, and K.-F. Ma, 2003. SSlip history and dynamic implications of the 1999 Chi-Chi, Taiwan earthquake, J. Geophys. Res., 108, No. B9, 2412.

Ni, Sidao and D. V. Helmberger, 2003. Ridge-like lower mantle structure beneath South Africa, J. Geophys. Res., 108, No. B2, 2094.

Ni, Sidao and D. V. Helmberger, 2003. Seismological Constraints on the South African superplume; could be the oldest distinct structure on Earth, Earth & Planet. Sci. Lett., 206, 119-131.

Ni, Sidao, V.F. Cormier, and D. V. Helmberger, 2003. A Comparison of Synthetic Seismograms for 2D structures: Semianalytical versus Numerical, Bull. Seismol. Soc. Am., 93, No.6, 2752-2757.

Ni, Sidao and D. V. Helmberger, 2003. Further constraints on the African superplume structure, Physics of Earth and Planet, Inter., 140, 243-251.

Ni, Sidao and D. V. Helmberger, 2003. Sharp lateral variation of the 660 discontinuity beneth Gulf of California resolved from P triplication, in preparation.

Savage, B., C. Ji, and D. V. Helmberger, 2003. Velocity variations in the uppermost mantle beneath the southern Sierra Nevada and Walker Lane, J. Geophys. Res, 108, No. B7, 2325.

Helmberger, Don V. and S. Ni, 2004. Seismic Modeling Constraints on the South African Superplume, submitted to the AGU Monograph Series.

Helmberger, Don V. and S. Ni, 2004. Approximate 3D Bodywave Synthetics for Tomographic Models, Bull. Seismol. Soc. Am., in press.

Ji, Chen, D. Wald, and D. V. Helmberger, 2004. Potential for rapid Ground Motion Estimation from Large Earthquakes Worldwide, Bull. Seismol. Soc. Am., in press.

Ji, Chen, D. V. Helmberger, and C.K. Saikia, 2004. Refined locations using InSar and Seismic Waveform Modeling, submitted to Geophys. Res. Lett.

Ni, Sidao, D. V. Helmberger, and J. Tromp, 2004. 3D Structure of the African Super Plume from Waveform Modeling, Geophys. J. Int., in press.

Ni, Sidao and D. V. Helmberger, 2004. Are boundaries in the earth's lower mantle vertical or horizontal? submitted to Nature.

Savage, B. and D. V. Helmberger, 2004. Complex Rayleigh waves resulting from deep sedimentary basins, Earth & Planet. Sci. Lett., 218, 229-239.

Savage, B. and D. V. Helmberger, 2004. Site response from incident Pnl waves, Bull. Seismol. Soc. Am., 94, No. 1, 357-362.

Savage, B. and D. V. Helmberger, 2004. San Bernardino Mountain Crustal and Mantle Velocity Structure, to be submitted to Geophys. Res. Lett.