If you'd like a reprint, please email  Mike Ritzwoller .

• Ritzwoller, M.H., N.M. Shapiro, and E.R. Engdahl, Structural context of the great Sumatra-Andaman Island earthquake, in preparation. (pdf)

• Levin, V., N.M. Shapiro, J. Park, and M.H. Ritzwoller, The slab portal beneath the Western Aleutians, Geology, 33(4), 253-256, 2005. (pdf)
• Levshin, A.L., M.H. Ritzwoller, and N.M. Shapiro, The use of crustal higher modes to constrain crustal structure across Central Asia, Geophys. J. Int., 160, 961-972, 2005. (pdf)
• Levshin, A.L., M.P. Barmin, M.H. Ritzwoller, and J. Trampert, Minor-arc and major-arc global surface wave diffraction tomography, Phys. Earth Planet. Ints., 149, 205-223, 2005. (pdf)
• Ritzwoller, M.H., N.M. Shapiro, M.E. Pasyanos, G.D. Bensen, and Y. Yang, Short period surface wave dispersion measurements from the ambient seismic noise in North Africa, the Middle East, and Central Asia, Proceedings of the 27th Seismic Research Review -- Ground-Based Nuclear Explosion Monitoring, Palm Springs, CA (Sept 20 - 22, 2005), 2005. (pdf)
• Shapiro, N.M. M.H. Ritzwoller, J.C. Mareschal, and C. Jaupart,  Lithospheric structure of the Canadian Shield inferred from inversion of surface-wave dispersion with thermodynamic a priori constraints, Geol. Soc. Lond. Spec. Publ., Geological Prior Information: Informing Science and Engineering, ed. R. Wood and A. Curtis, 239, 175-194, 186239-171-8/04/$15.00, The Geological Society of London, 2005. (pdf)
• Shapiro, N.M. M. Campillo, L. Stehly, and M.H. Ritzwoller,  High resolution surface wave tomography from ambient seismic noise, Science, 307(5715), 1615-1618, 11 March 2005. (Article, Supporting Materials, Science Perspectives Article by R. Weaver, NSF Press Release 05-035, Earlier Science Perspectives Article on Seismic Hum by S. Kedar and F. Webb, CU News, Christian Science Monitor (Peter Spotts), Discovery Channel (Larry O'Hanlon), ABC News, USA Today, Newswise, The Engineer Online, Geological Society of the UK, Wildlife News, SciScoop, Innovations Report, Iran Civil Center, Geological Survey of Iran, Earthmaps: Geology News, Environment News Service, Science Blog, Centre National de la Recherche Scientifique, Space Daily: Earth Observation, EurekAlert!, All American Patriots, German Geoscience Online, Boulder Daily Camera, Berlin Online, Springer Geowissenschaften, Speigel Online, AScribe, ipFrontline, ArcaMAX, Membrana (Russian) )
• van Hunen, J., S. Zhong, N.M. Shapiro, and M.H. Ritzwoller, New evidence for dislocation creep from 3-D geodynamic modeling of the Pacific upper mantle, Earth Planet Sci. Lett., doi:10.1016/j.epsl.2005.07.006, 10 pps., 2005. (pdf)
• Yang, X., A.R. Lowry, A.L. Levshin, and M.H. Ritzwoller, Toward a Rayleigh wave attenuation model for Eurasia and calibrating a new Ms formula, Proceedings of the 27th Seismic Research Review -- Ground-Based Nuclear Explosion Monitoring, Palm Springs, CA (Sept 20 - 22, 2005), 2005. (pdf)

• Butler, R. T. Lay, K. Creager, P. Earl, K. Fischer, J. Gaherty, G. Laske, B. Leith, J. Park, M. Ritzwoller, J. Tromp, and L. Wen,  The global seismic network surpasses its design goal, Eos., 85(23), 8 June 2004. (pdf)
• Ritzwoller, M.H., N.M. Shapiro, S. Zhong, Cooling history of the Pacific lithosphere, Earth Planet. Sci. Letts., 226, 69-84, 2004. (pdf)
• Shapiro, N.M. and M.H. Ritzwoller,  Thermodynamic constraints on seismic inversions, Geophys. J. Int., 157, 1175-1188, doi:10.1111/j.1365-246X.2004.02254.x, 2004. (pdf)
• Shapiro, N.M., M.H. Ritzwoller, P. Molnar, and V. Levin, Thinning and flow of Tibetan crust constrained by seismic anisotropy, Science, 305, 233-236, 9 July 2004. (pdf)
• Shapiro, N.M. and M.H. Ritzwoller,  Inferring surface heat flux distributions guided by a global seismic model: Particular application to Antarctica, Earth Planet. Sci. Lett., 223, 213 - 224, 2004. (pdf)
• Smith, D.B., M.H. Ritzwoller, and N.M. Shapiro, Stratification of anisotropy in the Pacific upper mantle, J. Geophys. Res., 109, B11309, doi:10.1029/2004JB003200, 2004. (pdf)
• Yang, X., I. Bondar, J. Bhattacharyya, M. Ritzwoller, N. Shapiro, M. Antolik, G. Ekstrom, H. Israelsson, and K. McLaughlin, Validation of regional and teleseismic travel-time models by relocation of GT events, Bull. Seis. Soc. Am. 94(3), 897-919, 2004. (pdf)

• Ritzwoller, M.H., N.M. Shapiro, and G.M. Leahy, A resolved mantle anomaly as the cause of the Australian-Antarctic Discordance, J. Geophys. Res., 108, no. B12, 2559, doi:10.1029/2003JB002522, 2003. (pdf)
• Ritzwoller, M.H., N.M. Shapiro, A.L. Levshin, E.A. Bergman, and E.R. Engdahl, The ability of a global 3-D model to locate regional events, J. Geophys. Res., 108, no. B7, 2353, ESE 9-1 - ESE 9-24, 2003. (pdf)

• Engdahl, E.R., E.A. Bergman, M.H. Ritzwoller, N.M. Shapiro, and A.L. Levshin, A reference data set for validating 3-D models, Proceedings of the 24rd Seismic Research Review -- Nuclear Explosion Monitoring: Innovation and Integration, 261-270, 2002. (pdf)
• Levin, V., N.M. Shapiro, J. Park, and M.H. Ritzwoller, Seismic evidence for catastrophic slab loss beneath Kamchatka, Nature, 418, 763-767, 15 Aug 2002. (pdf, html) (Nature Magazine ``News and Views'' article by Huw Davies (pdf).)
• Levshin, A., J. Stevens, M. Ritzwoller, and D. Adams, Short-period (7s-15s) group velocity measurements and maps in Central Asia, Proceedings of the 24rd Seismic Research Review -- Nuclear Explosion Monitoring: Innovation and Integration, 98-106, 2002. (pdf)
• Levshin, A.L. and M.H. Ritzwoller, Application of a global-scale 3-D model to improve regional locations, Stud. Geophys. Geod., 46, 283-292, 2002. (pdf)
• McLaughlin, K. et al., Seismic location calibration in the Mediterranean, North Africa Middle East, and Western Eurasia, Proceedings of the 24th Seismic Research Review -- Nuclear Explosion Monitoring: Innovation and Integration, 320-329, 2002. (pdf)
• Ritzwoller, M.H. and A.L. Levshin, Estimating shallow shear velocities with marine multi-component seismic data, Geophysics, 67 (6), 1991-2004, 2002. (pdf)
• Ritzwoller, M.H., N.M. Shapiro, M.P. Barmin, and A.L. Levshin, Global surface wave diffraction tomography, J. Geophys. Res., 107(B12), 2335, 2002. (pdf)
• Ritzwoller, M.H., M.P. Barmin, A. Villasenor, A.L. Levshin, and E.R. Engdahl, Pn and Sn tomography across Eurasia, Tectonophys., 358 (1-4), 39-55, 2002. (pdf, html)
• Shapiro, N.M. and M.H. Ritzwoller, Monte-Carlo inversion for a global shear velocity model of the crust and upper mantle, Geophys. J. Int., 151, 88-105, 2002. (pdf)
• Villasenor, A., M.P. Barmin, M.H. Ritzwoller, and A.L. Levshin, Computation of regional travel times and station corrections for three-dimensional velocity models, report. (pdf)
• Weichman, P.B., Lun, D.R., M.H. Ritzwoller, and E.M. Lavely, Study of surface nuclear magnetic resonance inverse problems, J. Appl. Geophys., 50, 129-147, 2002. (pdf)

• Barmin, M.P., M.H. Ritzwoller, and A.L. Levshin, A fast and reliable method for surface wave tomography, Pure Appl. Geophys., 158(8), 1351 - 1375, 2001. (pdf)
• Bukchin, B.G., A.Z. Mostinsky, A.A. Egorkin, A.L. Levshin, and M.H. Ritzwoller, Isotropic and nonisotropic components of earthquakes and nuclear explosions on the Lop Nor test site, China, Pure Appl. Geophys., 158(8), 1497 - 1515, 2001. (pdf)
• Engdahl, E.R. and M.H. Ritzwoller, Crust and upper mantle P- and S-wave delay times at Eurasian seismic stations, Phys. Earth Planet. Int., 123(2-4), 205-219, 2001. (pdf)
• Levshin, A.L. and M.H. Ritzwoller, Automated detection, extraction, and measurement of regional surface waves, Pure Appl Geophys, 158(8), 1531 - 1545, 2001. (pdf)
• Levshin, A.L., and M.H. Ritzwoller, Surface waves in seismology and sesimic prospecting, Problems in dynamics of the lithosphere and seismicity, Computational Seismology, 32, Moscow, GEOS, 27-32, 2001. (in Russian) (pdf)
• Levshin, A.L. and M.H. Ritzwoller, Monitoring a Comprehensive Nuclear Test Ban Treaty: Surface Waves, editors, 243 pps., Birkhauser, Basel, Switzerland, 2001. Review by A. Plesinger.
• Levshin, A.L., M.H. Ritzwoller, M.P. Barmin, A. Villasenor, and C.A. Padgett, New constraints on the Arctic crust and uppermost mantle: Surface wave group velocities, Pn, and Sn, Phys. Earth Planet. Int., 123(2-4), 185 - 204, 2001. (pdf)
• Levshin, A.L., M.H. Ritzwoller, M.P. Barmin, and J. Stevens, Short period group velocity measurements and maps in Central Asia, Proceedings of the 23rd Seismic Research Review: Worldwide Monitoring of Nuclear Explosions, 258-269, Oct 2-5, 2001. (pdf)
• McLaughlin, K, et al., Seismic location calibration in the Mediterranean, N. Africa, Middle East, and W. Eurasia, Proceedings of the 23rd Seismic Research Review: Worldwide Monitoring of Nuclear Explosions, 270-279, Oct 2-5, 2001. (pdf)
• Ritzwoller, M.H. and A.L. Levshin, Monitoring the Comprehensive Nuclear Test Ban Treaty -- Introduction, Pure Appl. Geophys., 158(8), 1341 - 1348, 2001. (pdf)
• Ritzwoller, M.H. and N.M. Shapiro, Lithospheric inversions and the assimilation of complementary information: Some examples relevant for EarthScope, Proceedings of the EarthScope Workshop, 383-387, Snowbird, Utah, Oct 10-12, 2001. (pdf)
• Ritzwoller, M.H., N.M. Shapiro, A.L. Levshin, and G.M. Leahy, The structure of the crust and upper mantle beneath Antarctica and the surrounding oceans, J. Geophys. Res., 106(B12), 30645 - 30670, 2001. (pdf). (Science Magazine ``Editor's Choice'' selection on 11 Jan. 2002.)
• Shapiro, N.M., M.H. Ritzwoller, M. Barmin, P. Weichman, L. Tenorio, W. Navidi, Capturing uncertainties in source-specific station corrections derived from a 3-D model, Proceedings of the 23rd Seismic Research Review: Worldwide Monitoring of Nuclear Explosions, 395-403, Oct 2-5, 2001. (pdf)
• Villasenor, A., M.H. Ritzwoller, A.L. Levshin, M.P. Barmin, E.R. Engdahl, W. Spakman, and J. Trampert, Shear velocity structure of Central Eurasia from inversion of surface wave velocities, Phys. Earth Planet. Int., 123(2-4), 169 - 184, 2001. (pdf)

2000

• Bondar, I. et al., Source specific station correction surfaces (SSSCs) for international monitoring system (IMS) seismic stations in N. Africa, N. East, and W. Asia, Proceedings of the 22nd Seismic Research Symposium for Monitoring a CTBT, New Orleans, LA, 10pp., 12 - 15 September, 2000. (pdf)
• Levshin, A.L., M.H. Ritzwoller, B.G. Bukchin, A.Z. Mostinsky, and A.A. Egorkin, Isotropic and nonisotropic components of earthquakes and nuclear explosions on the Lop Nor test site, Proceedings of the 22nd Seismic Research Symposium for Monitoring a CTBT, New Orleans, LA, 10pp., 12 - 15 September, 2000. (pdf)
• Levshin, A.L. and M.H. Ritzwoller, Use of the Kyrgyz seismic network to assess the performance of the international monitoring system in and around Kyrgyzia,  Report to DTRA and ACDA, 25 pp., 2000. (pdf)
• Ritzwoller, M.H. and A.L. Levshin, Estimating shallow shear velocities with marine multi-component seismic data, Proceedings of Seismic Inverse Methods for Complex Structures, 125 - 142, Center for Wave Phenomena, Vail, CO, 9 - 13 May, 2000. (pdf)
• Ritzwoller, M.H., M.P. Barmin, A.L. Levshin, A. Villasenor, and E.R. Engdahl, Estimates of Pn and Sn across Eurasia, Proceedings of the 22nd Seismic Research Symposium for Monitoring a CTBT, New Orleans, LA, 10pp., 12 - 15 September, 2000. (pdf)
• Villasenor, A., M.H. Ritzwoller, M.P. Barmin, E.R. Engdahl, and A.L. Levshin, Computation of travel times and station correction surfaces in Eurasia using 3-D velocity models, Proceedings of the 22nd Seismic Research Symposium for Monitoring a CTBT, New Orleans, LA, 10 pp., 12 - 15 September, 2000. (pdf)
• Weichman, P.B., E.M. Lavely, and M.H. Ritzwoller, Theory of surface nuclear magnetic resonance with applications to geophysical imaging problems, Phys. Rev. E., 62, 1290-1312, 2000. (pdf)

1999

• James, M.B. and M.H. Ritzwoller, Feasibility of truncated perturbation expansions to approximate Rayleigh wave eigenfrequencies and eigenfunctions in heterogeneous media, Bull. Seism. Soc. Am., 89, 433-442, 1999. (pdf)
• Levshin, A.L., M.H. Ritzwoller, and J.S. Resovsky, Source effects on surface wave group travel times and group velocity maps, Phys. Earth Planet. Int., 115, 293 - 312, 1999. (pdf)
• Levshin, A.L., M.P. Barmin, and M.H. Ritzwoller, Evaluation of uncertainties and bias in surface wave tomographic maps and travel time correction surfaces, 21st Seismic Research Symposium, 1999. (pdf)
• Resovsky, J.S. and M.H. Ritzwoller, A degree 8 mantle shear velocity model from normal mode observations below 3 mHz, J. Geophys. Res., 104, 993-1014, 1999. (pdf)

(Nature Magazine ``News and Views'' article by R. Widmer is here.)
• Resovsky, J.S. and M.H. Ritzwoller, Regularization uncertainty in density models estimated from normal mode data, Geophys. Res. Lett., 26, 2319-2322, 1999. (pdf)
• Ritzwolller, M.H., A. Villasenor, A., A.L. Levshin, E.R., Engdahl, M.P. Barmin, W. Spakman, and J. Trampert, Construction of a 3-D P and S model of the crust and upper mantle to improve regional locations in W. China, Central Asia, and parts of the Middle East, 21st Seismic Research Symposium, 1999. (pdf)
• Vdovin, O.Y., A.L. Levshin, J.A. Rial, and M.H. Ritzwoller, Group velocity tomography of South America and the surrounding oceans, Geophys. J. Int., 136, 324-340, 1999. (pdf)
• Weichman, P.B., E.M. Lavely, and M.H. Ritzwoller, Surface nuclear magnetic resonance imaging of large systems, Phys. Rev. Lett., 82, 4102-4105, 1999. (pdf)

(Physical Review ``Focus'' article is here.)

1998

• Levshin, A.L., M.H. Ritzwoller, M.P. Barmin, L.I. Ratnikova, and C.A. Padgett, Automated surface wave analysis using phase-matched filters from dispersion maps, 20th Annual Seismic Research Symposium on Monitoring a CTBT, Proceedings, September 21-23, 1998. (pdf)
• Resovsky, J.S. and M.H. Ritzwoller, New and refined constraints on 3-D earth structure from normal modes below 3mHz, J. Geophys. Res., 103, 783 - 810, 1998. (pdf)
• Ritzwoller, M.H. and A.L. Levshin, Eurasian surface wave tomography: Group velocities, J. Geophys. Res., 103, 4839 - 4878 1998. (pdf)
• Ritzwoller, M.H., A.L. Levshin, L.I. Ratnikova, and A.A. Egorkin, Intermediate period group velocity maps across Central Asia, Western China, and parts of the Middle East, Geophys. J. Int., 134, 315-328, 1998. (pdf)
• Walter, W. and M.H. Ritzwoller, Workshop Report on the U.S. Use of Surface Waves for Monitoring the Comprehensive Test Ban Treaty, Results and recommendations from the Boulder Surface Wave Workshop, March 19 and 20, 1998. (pdf)

1997

• Levshin, A.L., M.H. Ritzwoller, L.I. Ratnikova, M. Silitch, R. Kelly, and B. O'Sullivan, Intermediate period group velocity maps across Central Asia and parts of the Middle East, Proceedings of the 19th Seismic Research Symposium on Monitoring a CTBT, 67 - 76, 1997. (pdf)
• Levshin, A.L., M.H. Ritzwoller, L.I. Ratnikova, and A.A. Egorkin, Jr., Surface wave tomographic study of the Central Asia tectonic regimes, Upper Mantle Heterogeneities from Active and Passive Seismology, NATO ASI Series Volume, ed. K. Fuchs, Kluwer Publ., 257-268, 1997. (pdf)
• Rial, J.A. and M.H. Ritzwoller, Characteristics of Lg propagation across South America, Geophys. Jour. Int., 131, 401-408, 1997. (pdf)

1996

• Levshin, A.L., M.H. Ritzwoller, and S.S. Smith, Group velocity variations across Eurasia, Proceedings of the 18th Seismic Research Symposium on Monitoring a CTBT, 70 - 79, 1996. (pdf)
• Ritzwoller, M.H., A.L. Levshin, L.I. Ratnikova, and D.M. Tremblay, High resolution group velocity variations across Central Asia, Proceedings of the 18th Seismic Research Symposium on Monitoring a CTBT, 98 - 107, 1996. (pdf)

1995

• Levshin, A.L. and M.H. Ritzwoller, Surface wave group velocity measurements across Eurasia, Proceedings of the 17th Seismic Research Symposium on Monitoring a CTBT, 226-236, 1995. (pdf)
• Levshin, A.L. and M. H. Ritzwoller, Characteristics of surface waves generated by events on and near the Chinese nuclear test site, Geophys. J. Int., 123, 131-149, 1995. (pdf)
• Resovsky, J.S. and M.H. Ritzwoller, Constraining odd-degree mantle structure with normal modes, Geophys. Res. Letts., 22, 2301-2304, 1995. (pdf)
• Ritzwoller, M.H., Deja Q: Anelasticity of the Earth's Deep Interior, Deep Earth Dialog, 9, 14-16, 1995. (pdf)
• Ritzwoller, M.H. and E.M. Lavely, Three-dimensional seismic models of the Earth's mantle, Revs. of Geophys., 33, 1-66, 1995. (pdf )
• Ritzwoller, M.H. and J. Resovsky, The feasibility of normal mode constraints on higher degree structures, Geophys. Res. Letts., 22, 2305-2308, 1995. (pdf)
• Ritzwoller, M.H., A.L. Levshin, S.S. Smith, and C.S. Lee, Making accurate continental broadband surface wave measurements, Proceedings of the 17th Seismic Research Symposium on Monitoring a CTBT, 482-490, 1995. (pdf)

1994

• Lavely, E.M., A. Rodgers, and M.H. Ritzwoller, Can the differential sensitivity of body wave, mantle wave, and normal mode data resolve the trade-off between transition zone structure and boundary topography?, Physics Earth Planet. Ints., 86, 117-146, 1994. (pdf)
• Levshin, A. L., M. H. Ritzwoller, and L. I. Ratnikova, The nature and cause of polarization anomalies of surface waves crossing northern and central Eurasia, Geophys. J. Internatl., 117, 577 - 590, 1994. (pdf)
• Resovsky, J. S. and M. H. Ritzwoller, Characterizing the long-period seismic effects of long-wavelength elastic and anelastic models, Geophys. J. Internatl., 117, 365 - 393, 1994. (pdf)

1993

• Durek, J., Ritzwoller, M.H., and Woodhouse, J.H., Constraining upper mantle anelasticity using surface wave amplitude anomalies, Geophys. J. Int., 114, 249-272, 1993. (pdf)
• Kelly, J.F., and Ritzwoller, M.H., 1993. Helioseismic line-shape estimation given stochastic excitation, Ap. J., 418, 476 - 489, 1993. (pdf)
• Lavely, E. M. and M. H. Ritzwoller, Average effects of large-scale convection on helioseismic line widths and frequencies, Ap. J., 403, 810-832, 1993. (pdf)
• Ritzwoller, M. H. and D. Harvey, IRIS's Joint Seismic Program Center (JSPC) opens, IRIS Newsletter, XI, 3, 5-8, 1992. (pdf)
• Ritzwoller, M. H. and J. Kelly, Detecting giant cell convection with helioseismic linewidths, GONG 1992: Seismic Investigation of the Sun and Stars, (T. Brown ed.), Astophys. Soc. Pac. Conf. Series, 42, 261 - 264, 1993. (pdf)

1992

• Lavely, E. M. and M. H. Ritzwoller, The effect of global-scale, steady-state convection and elastic-gravitational asphericities on helioseismic oscillations, Phil. Trans. R. Soc. Lond. A, 339, 431-496, 1992. (pdf)

1991

• Ritzwoller, M. H. and E. M. Lavely, A unified approach to the helioseismic forward and inverse problems of differential rotation, Ap. J., 369, 557-566, 1991. (pdf)

1988

• Ritzwoller, M. H., G. Masters and F. Gilbert, Constraining aspherical structure with low harmonic degree interaction coefficients: Application to uncoupled multiplets, J. Geophys. Res., 93, 6269-6396, 1988. (pdf)

1987

• Masters, G. and M. H. Ritzwoller, Low frequency seismology and three dimensional structure: Observational aspects, in Mathematical Geophysics, A survey of recent developments in seismology and geodynamics, edited by N. J. Vlaar, G. Nolet, M. J. R. Wortel, and S. A. P. L. Cloetingh, Reidel Publ., Cordrecht, the Netherlands, 1987. (pdf)

1986

• Ritzwoller, M. H., G. Masters and F. Gilbert, Observations of anomalous splitting and their interpretation in terms of aspherical structure, J. Geophys. Res., 91, 10203-10228, 1986. (pdf)

1983

• Ritzwoller, M. H. and C. R. Bentley, Magnetic anomalies over Antarctica measured from Magsat, in: Antarctic Earth Science (R. L. Oliver, P. R. James and J. B. Jago, eds.), Proc. IVth Int. Sympos. Antarctic Earth Sciences, Australian Acad. Sci., pp. 504-507, 1983. (pdf)

1982

• Ritzwoller, M. H. and C. R. Bentley, Magsat magnetic anomalies over Antarctica and the surrounding oceans, Geophys. Res. Lett. 9, 285-288, 1982. (pdf)