Robert L. Nowack

Recent and Past Publications

Chen, W.P., M. Martin, T.L. Tseng, R.L. Nowack, S.H. Hung and B.H. Huang (2009) Shear-wave birefringence and current configuration of converging lithosphere under Tibet, Earth Planet. Sci. Lett., submitted.

Nowack, R. L., W.P. Chen and T.L. Tseng (2009) Application of Gaussian beam migration to multi-scale imaging of the lithosphere beneath the Hi-CLIMB array in Tibet, Bull. Seis. Soc. Am., in revision.

Tseng, T.L. W.P. Chen and R.L. Nowack (2009) Northward thinning of Tibetan crust revealed by virtual seismic profiles, Geophys. Res. Lett., 36, 14, doi:10.1029/2009GL038252.

Nowack, R. L., T. Parsons and A. Revil (2009) Exploring New Frontiers with JGR-Solid Earth, J. Geophys. Res., 114, B10, doi:10.1029/2009JB006977.

Nowack, R.L. (2009) A tale of two beams: Gaussian beams and Bessel beams, Proceedings of the Project Review, Geo-Mathematical Imaging Group, Vol. 2, (Purdue University, West Lafayette, IN), pp. 49-58.

Nowack, R. L. (2009) Dynamically focused Gaussian beams for seismic imaging, Proceedings of the Project Review, Geo-Mathematical Imaging Group, Vol. 2, (Purdue University, West Lafayette, IN), pp. 59-70.

Dasgupta, S, R. L. Nowack and S. Mitra (2009) Deconvolution of three-component teleseismic data from Southern Tibet using the SVA technique, Bull. Seism. Soc. Am., 99, 1973-1983.

Nowack, R. L. and C. Li (2009) Methods and Applications of Seismic Tomography, in Handbook of Signal Processing in Acoustics (eds. D. Havelock, S. Kuwano and M. Vorlander), Springer-Verlag, pp.1633-1653.

Nowack, R. L. (2008) Focused Gaussian beams for seismic imaging, in Expanded Abstracts, 78^th Annual Meeting of the Society of Exploration Geophysicists, Las Vegas, pp. 2376-2380.

Nowack, R. L., W.P. Chen, and T.L. Tseng (2008) Frequency-dependent nature of Pn in Western China: Gaussian beam modeling of data from the Hi-CLIMB experiment, 30^th Annual Monitoring Research Review, NNSA/Air Force Research Laboratory, Volume 1, pp. 180-189.

Nowack, R.L. (2008) Gaussian beam imaging for converted and surface reflected waves, Proceedings of the Project Review, Geo-Mathematical Imaging Group, Vol. 1, (Purdue University, West Lafayette, IN), pp. 120 -128.

Nowack, R.L. (2008) Frame-based Gaussian beam summation and seismic head waves, Proceedings of the Project Review, Vol. 1, Geo-Mathematical Imaging Group, (Purdue University, West Lafayette, IN), pp. 113-119.

Nowack, R. L. (2008) Focused Gaussian beams for seismic imaging, Proceedings of the Project Review, Vol. 1, Geo-Mathematical Imaging Group, (Purdue University, West Lafayette, IN), pp. 129-139.

Dasgupta, S. and R.L. Nowack (2008) Frequency extrapolation to enhance the deconvolution of transmitted seismic waves, J. Geophys. and Eng., 5, 118-127.

Nowack, R. L., W. P. Chen, U. Kruse and S. Dasgupta (2007) Imaging offsets in the Moho: synthetic tests using Gaussian beams with teleseismic waves, Pure and Applied Geophysics, 164, 1921-1936.

Chen, R., V.P. Drnevich, X. Yu and R.L. Nowack (2007) Water content measurements with Time Domain Reflectometry in highly conductive soils using reflections from the soil surface, J. of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 133, pp. 1597-1608.

Dasgupta, S. and R.L. Nowack (2006) Deconvolution of three-component teleseismic P-waves using the autocorrelation of the P to SV scattered waves, Bull. Seism. Soc. Am., 96, 1827-1835.

Nowack, R.L. and C. Li (2006) Application of autoregressive extrapolation to the cross-borehole tomography, Studia Geophysica et Geodaetica, 50, 337-348.

Nowack, R.L. S. Dasgupta, G.T. Schuster and J.M. Sheng (2006) Correlation migration using Gaussian beams of scattered teleseismic body waves, Bull. Seism. Soc. Am., Vol. 96, pp. 1-10.

Nowack, R.L. and C. Li (2005) Autoregressive extrapolation applied to tomography in the cross-borehole geometry, Society of Exploration Geophysicists, Expanded Abstracts, Seventy-Fifth Meeting, Houston, pp. 2562-2566.

Yu, X., V. P. Drnevich and R.L. Nowack (2005) Statistical comparison of models for the dielectric spectrum of soil mixtures, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP), Atlanta, pp. 215-225.

Li, C. and R.L. Nowack (2005) Seismic tomography using travel-time surfaces for experiments in the laboratory, J. of Geophysics and Engineering, 2, 231-237.

Nowack, R.L. (2005) Review of “Fundamentals of Seismic Wave Propagation” by C.H. Chapman, Siam Review, 47, 616-618, Society of Industrial and Applied Mathematics, Philadephia.

Haase, J., R.L. Nowack, C.H. Park, A. Hunyar, J. Hill and M. Hamburger (2004) Evaluation of seismic hazard for Indiana, FHWA/IN/JRTP02004/3, Joint Transportation Research Program, Indiana Department of Transportation, Indianapolis.

Li, C. and R.L. Nowack (2004) Application of autoregressive extrapolation to seismic tomography, Bull. Seism. Soc. Am., 94, 1465-1466.

Nowack, R.L. (2003) Calculation of synthetics seismograms with Gaussian beams, Pure and Applied Geophysics, 160, 487-507.

Nowack, R.L., M.K. Sen, and P.L. Stoffa (2003) Gaussian beam migration for sparse common-shot data, Society of Exploration Geophysicists, Expanded Abstracts, Seventy-third Annual Meeting, Tulsa, pp. 1114-1117.

Pride, S.R., (and DOE Working group including R.L. Nowack) (2003) Permeability dependence of seismic amplitudes, The Leading Edge, 518-523.

Nowack, R.L., C. Li and J. Virieux (2003) Inversion of seismic attributes from the 1996 3-D tomography experiment at Mt. Vesuvius, Italy, in The TomoVes Project: Looking Inside Mt. Vesuvius, (eds. A.Zollo, A. Bobbio, P. Gasparini, R. Casale and M. Yeroyanni), CD Book, CUEN Publ., Naples, Italy.

Nowack, R.L. and S. Stacy (2002) Synthetic seismograms and wide-angle seismograms attributes from the Gaussian beam and reflectivity methods for models with interfaces and gradients, Pure and Applied Geophysics, 159, 1447-1464.

Stacy, S. and R.L. Nowack (2002) Modeling of wide-angle seismic attributes from shot gather 11 of the Sarex Experiment, Studia Geophysica et Geodaetica, 46, 667-690, (In special issue dedicated to V. Cerveny).

Tomfohrde, D.A. and R.L. Nowack (2000) Crustal structure beneath Taiwan using frequency-based inversion of receiver function waveforms, Pure and Applied Geophysics, 157, 737-764.

Nowack, R.L., E. Ay, W.-P. Chen and B. Huang (1999) A seismic profile of the upper mantle along the southwestern edge of the Philippine Sea Plate using short-period array data, Geophys. J. Int., 136, 171-179.

Nowack, R.L. and W-P. Chen (1999) Souce-receiver reciprocity and empirical Green’s function from chemical blasts, Bull. Seism. Soc. Am., 89, 538-543.

Gasparini, P., and the TomoVes Working Group (with R.L. Nowack and others) (1998) Looking inside Mt. Vesuvius, Trans. Am. Geophys Un., EOS, 79, 229-232.

Nowack, R.L. (1998) Variable damping in seismic tomography based on ray coverage, Meeting on Signal Recovery and Synthesis, Optical Society of America, Kailua-Kona, Hawaii, July 8-12.

Matheney, M.P. and R.L. Nowack (1998) Seismic attenuation computed from reflection data and comparison with refraction results, Pure and Applied Geophysics, 153, 537-559.

Nowack, R.L. (1998) Applications of generalized inversion in geophysics, in Cornelius Lanczos Collected Published Papers with Commentaries, vol. V, General Editor, W.R. Davis; Editors, M.T. Chu, P.Dolan, J.R. McConnell, L.K. Norris, E. Ortiz, R.J. Plemmons, D. Ridgway, B.K.P. Scaife, W.J. Stewart, and J.W. York, Jr.; Associate Editors, W.O. Doggett, B.M. Gellai, and AA. Gsponer, Consulting Editor, A. Prioli, North Carolina State University, Raleigh, NC, 3-206—3-211.

Nowack, R.L. (1998) Applications of the FFT in Geophysics, in Cornelius Lanczos Collected Published Papers with Commentaries, vol. VI, General Editor, W.R. Davis; Editors, M.T. Chu, P.Dolan, J.R. McConnell, L.K. Norris, E. Ortiz, R.J. Plemmons, D. Ridgway, B.K.P. Scaife, W.J. Stewart, and J.W. York, Jr.; Associate Editors, W.O. Doggett, B.M. Gellai, and AA. Gsponer, Consulting Editor, A. Prioli, North Carolina State University, Raleigh, NC, 3-511—3-515.

Nowack, R.L. and M.P. Matheney (1997) Inversion of body-wave attributes derived from seismic refraction data, in Inverse Problems in Geophysical Applications, Eds., H.W. Engl, A.K. Louis, W. Rundell, SIAM Press, 51-64.

Nowack, R.L. and M.P. Matheney (1997) Inversion of seismic attributes for velocity and attenuation, Geophys. J. Int., 128, 689-700.

Matheney, M.P. and R.L. Nowack (1997) Seismic attribute inversion for velocity and attenuation structure using data from the Glimpce Lake Superior experiment, J. Geophys. Res., 102, 9949-9960.

Brudzinski, M.R., W.-P. Chen, R.L. Nowack and B. Huang (1997) Variations of P-wave speeds in the mantle transition zone beneath the Northern Philippine Sea, J. Geophys. Res., 102, 11,815-11,827.

Nowack, R.L. (1997) Applications of inverse problems to the analysis of refraction and wide-angle seismic data, in Inverse Problems and Wave Propagation, Eds., G. Chavent, G. Papanicolaou, P. Sacks and W. Symes, IMA, 90, 395-417.

Matheney, M.P. and R.L. Nowack (1995) Seismic attenuation values obtained from instantaneous frequency matching and spectral ratios, Geophys. J. Int., 123, 1-15.

Nowack, R.L. (1994) Development of the FFT and Applications in geophysics, Proceedings of the International Lanczos Centenary Conference, Eds. Plemmons, R.J. and J.W. York, SIAM, Philadelphia, PA, 395-397.

van Heijst, H.J., R. Snieder and R.L. Nowack (1994) Resolving a low velocity zone with surface wave data, Geophys. J. Int., 118, 333-343.

Nowack, R.L. and L.W. Braile (1993) Refraction and wide-angle reflection tomography: theory and results, in Seismic Tomography: Theory and Practice, Eds. Iyer, H.M. and K. Hirahara, Chapman and Hall Publ., London, pp. 733-763.

Lutter, W.J., A.M. Trehu and R.L. Nowack (1993) Application of 2-D travel-time inversion of seismic refraction data to the mid-continent rift beneath Lake Superior, Geophys. Res. Lett., 20, 615-618.

Erdogan, N. and R.L. Nowack (1993) Slant stack analysis for one dimensional upper mantle structure using short period data from MAJO, Pure and Applied Geophysics, 141, 1-24.

Nowack, R.L. (1992) Wavefronts and solutions of the Eikonal equation, Geophys. J. Int., 110, 55-62.

Nowack, R.L. and I. Psencik (1991) Perturbation from isotropic to anisotropic media in the ray approximation, Geophys. J. Int., 106, 1-10.

Lutter, W.J., R.L. Nowack and L.W. Braile (1990) Seismic imaging of upper crustal structure using travel-times from the PASSCAL Ourachita Experiment, J. Geophys. Res., 95, 4621-4631.

Daudt, C.R., L.W. Braile, R.L. Nowack and C.S. Chiang (1990) Reply to J. Vidale's "comment on 'a comparison of finite-difference and Fourier calculations of synthetic seismograms'", Bull. Seism. Soc. Am., 80, 496-497.

Lyslo, J.A. and R.L. Nowack (1990) Slant stack analysis of shot point 16 from the 1986 PASSCAL Ouachita Experiment, J. Geophys. Res., 95, 4647-4656.

Nowack, R.L. (1990) Tomography and the Herglotz-Wiechert Formulation, Pure and Applied Geophysics, 133, 305-315.

Lutter, W.J. and R.L. Nowack (1990) Inversion for crustal structure using reflections from the PASSCAL Ouachita Experiment, J. Geophys. Res., 95, 4621-4631.

Nowack, R.L. (1990) Perturbation methods for rays and beams, in Second IMACS Symposium on Computational Acoustics, Ed. Lee, D., North Holland Press, 167-180.

Nowack, R.L. (1990) Book review of "Geophysical Data Analysis: Discrete Inverse Theory" by W. Menke, Pure and Applied Geophysics, 140-142.

Daudt, C.R., L.W. Braile, R.L. Nowack and C.S. Chiang (1989) A comparison of finite difference and Fourier method calculations of synthetic seismograms, Bull. Seism. Soc. Am., 79, 1210-1230.

Nowack, R.L. and W. Lutter (1989) Linearized rays, amplitude and inversion, in Scattering and Attenuation of Seismic Waves, Eds. Wu, R.S. and K. Aki, Birkhauser Boston.

Nowack, R.L. and J. Lyslo (1989) Frechet derivatives for curved interfaces in the ray approximation, Geophys. J. Int., 97, 497-509.

Nowack, R.L. and W.J. Lutter (1988) Linearized rays, amplitude and inversion, Pure and Applied Geophysics, 128, 401-421.

Nowack, R.L. and W.J. Lutter (1988) A note on the calculation of covariance and resolution, Geophys. J. Int., 95, 205-207.

Nowack, R.L. (1988) Sensitivity operators for curved interfaces within the ray approximation, Conference on Seismic Waves in Laterally Heterogeneous Media, Liblice, Czechoslovakia.

Nowack, R.L. (1986) Gaussian beam synthetic seismograms, J. Acoustical Soc. Am., 79, S14.

Nowack, R.L. and K. Aki (1986) Iterative inversion for velocity using waveform data, Geophys. J.R. astr. Soc., 87, 701-730.

Nowack, R.L. (1985) Wave propagation in laterally varying media and iterative inversion for velocity, Ph.D., MIT, 225 p.

Nowack, R.L. and K. Aki (1984) The 2-D Gaussian beam synthetic method: Testing and Application, J. Geophys. Res., 89, 7797-7819.

Patwardhan, A.D., D.D. Tillson and R.L. Nowack (1978) Zonation for critical facilities based on two-level earthquakes, International Earthquake Engineering and Microzonation Conference Proceedings, 485-496.