R. Gerhard Pratt

PUBLICATIONS (Reverse chronological order)

Some of these publications are available as PDF files.

Pratt, R. G., Huang, L., Duric, N. and Littrup, P., 2007 Sound-speed and attenuation imaging of breast tissue using waveform tomography of transmission ultrasound data, in Medical Imaging 2007: Physics of Medical Imaging, Hsieh, J., Flynn, M.J., Eds., Proceedings of the SPIE, 6510, 65104S.

Gao, F., Levander, A.R., Pratt, R.G., Zelt, C.A., and Fradelizio, G.L., 2007. Waveform tomography at a groundwater contamination site: Surface reflection data. Geophysics 72, G45-G55.

Brenders, A.J. and Pratt, R.G., 2007b. Efficient waveform tomography for lithospheric imaging: implications for realistic, 2-D acquisition geometries and low frequency data. Geophys. J. Int., 168, 152-170.

Brenders, A.J. and Pratt, R.G., 2007a. Full waveform tomography for lithospheric imaging: Results from a blind test in a realistic crustal model. Geophys. J. Int., 168, 133-151.

Gao, F., Levander, A.R., Pratt, R.G., Zelt, C.A., and Fradelizio, G.L., 2006. Waveform tomography at a groundwater contamination site: VSP-Surface data set. Geophysics 71, H1-H11.

Hole, J.A., Zelt, C.A. and Pratt, R.G., 2005. Advances in controlled-source seismic imaging. Eos Trans. Amer. Geophys. Union, 86, 177&188 (cover article).

Pratt, R.G., Hou, F., Bauer, K. and Weber, M. H., 2004. Waveform tomography images of velocity and inelastic attenuation from the Mallik 2002 Crosshole Seismic Surveys. Accepted for publication in the 2004 Compendium volume for the Mallik 2002 Gas Hydrate production research programme.

Bauer, K., Pratt, R. G., Weber, M. H., Haberland, Ch., Ryberg, T. and Shimizu, S., 2004. Introduction, setting and initial data analysis for the Mallik 2002 crosshole seismic experiments. Accepted for publication in the 2004 Compendium volume for the Mallik 2002 Gas Hydrate production research programme.

Bauer, K., Haberland, Ch., Pratt, R. G., Hou, F., and Weber, M. H., 2004. Ray-based crosswell tomography for P wave velocity, anisotropy, and attenuation structure around the Mallik 5L-38 Gas Hydrate Research Well. Accepted for publication in the 2004 Compendium volume for the Mallik 2002 Gas Hydrate production research programme.

Sirgue, L. and Pratt, R. G., 2004. Efficient waveform inversion and imaging: a strategy for selecting temporal frequencies. Geophysics, 69, 231-248.

Angus, D., Thomson, C. J. and Pratt, R. G., 2004. A one--way wave equation for modelling seismic waveform variations due to elastic anisotropy. Geophys. J. Int., 156, 595-614.

Min, D.J., Shin, C.S., Pratt, R. G. and Yoo, H.S., 2003. Weighted-averaging finite-element method for 2D elastic wave equations in the frequency domain. Bulletin of the Seismological Society of America, 93, 904-921.

Wang, Y., Worthington, M. H. and Pratt, R.G., 2002. Decomposition of structural amplitude effect and AVO attributes: application to a gas-water contact. Pure and Applied Geophysics, 159, 1305-1320.

Hicks, G. and Pratt, R.G., 2001. Reflection waveform inversion using local descent methods: estimating attenuation and velocity over a gas-sand deposit. Geophysics, 66, 598-612.

Wang, Y., White, R. E. and Pratt, R. G., 2000. Seismic amplitude inversion for interface geometry: practical approach for application. Geophysical Journal International, 142, 162-172.

Wang, Y. and Pratt, R. G., 2000. Seismic amplitude inversion for interface geometry of multi-layered structures in reflection tomography. Pure and Applied Geophysics, 157, 1601-1620.

Pratt, R.G. and Shipp, R.M. , 1999. Seismic waveform inversion in the frequency domain, Part 2: Fault delineation in sediments using crosshole data. Geophysics, 64, 902-914.

Pratt, R.G., 1999. Seismic waveform inversion in the frequency domain, Part 1: Theory, and verification in a physical scale model. Geophysics, 64, 888-901.

Vecsey, G., Holliger, K., Pratt, R.G., Dyer, B.C. and Green, A.G., 1998. Anisotropic seismic tomography of a potential hot dry rock reservoir before and during induced pressurization. Geophysical Research Letters, 25, 1991-1994.

Pratt, R.G., Shin, Changsoo and Hicks, G.J., 1998. Gauss-Newton and full Newton methods in frequency domain seismic waveform inversion. Geophysical Journal International, 133, 341-362.

Stekl, I. and Pratt, R.G., 1998. Accurate visco-elastic modeling by frequency-domain finite differences, using rotated operators. Geophysics, 63, 1779-1794.

Brittan, J., Forgues, E., Pratt, R.G., Morgan, J., Warner, M., Macintyre, H., and Marin, L., 1997. Wavefield inversion across the edge of the Chicxulub impact structure. Journal of Conference Proceedings, 1, 65-72.

Wang, Y.H., and Pratt, R.G., 1997. Sensitivities of seismic traveltimes and amplitudes in reflection tomography. Geophysical Journal International, 131, 618-642.

Rowbotham, P.S. and Pratt, R.G., 1997. Improved inversion through use of the null space. Geophysics, 62, 869-883.

Pratt, R.G. and Sams, M.S., 1996. Reconciliation of cross-hole seismic velocities with well information in a layered sedimentary environment. Geophysics, 61, 2, p. 549-560.

Pratt, R.G., Song, Z.-M., Williamson, P.R., Warner, M.R., 1996. Two- dimensional velocity models from wide angle seismic data by waveform inversion. Geophysical Journal International, 124, 323-340.

Brittan, J., Warner, M. and Pratt, R.G., 1995. Anisotropic parameters of layered media in terms of composite elastic properties. Geophysics, 60, 1243-1248.

Ory, J. and Pratt, R.G., 1995. Are our parameter estimators biased? The significance of finite difference regularization operators. Inverse Problems, 11, 397-424.

Song, Z.-M., Williamson, P.R. and Pratt, R.G, 1995. 2.5D Full-Wave Frequency domain crosshole modelling an inversion: Part II: Inversion method and synthetic experiments. Geophysics, 60, 796-809.

Williamson, P.W. and Pratt, R.G., 1995. A critical review of acoustic wave modelling procedures in 2.5-D. Geophysics, 60, 591-595.

Pratt, R.G., Song, Z.-M., Williamson, P.R., 1994. Can frequency domain inversion of seismic data work? In Mathematical Methods in Geophysical Imaging, pp. 55-65, ed. Sergio E. Zaranttonello, Proc. SPIE 2033.

Pratt, R.G, McGaughey, W.J. and Chapman, C.H., 1993. Anisotropic velocity tomography: A case study in a near surface rockmass. Geophysics, 58, 1748-1763.

Chapman, C.H. and Pratt, R.G., 1992. Traveltime tomography in anisotropic media--I: Theory. Geophysical Journal International, 109, 1-19.

Pratt, R.G. and Chapman, C.H., 1992. Traveltime tomography in anisotropic media--II. Application. Geophysical Journal International, 109, 20-37.

Pratt, R.G., Li Quan, Dyer, B.C., Goulty, N.R. and Worthington, M.H., 1991. Algorithms for E.O.R. Imaging using crosshole seismic data: An experiment with scale model data. Geoexploration, 28, 193-220.

Pratt, R.G., and Goulty, N.R., 1991. Combining wave equation imaging with traveltime tomography to form high resolution images from crosshole data. Geophysics, 56, 208-224.

Pratt, R.G., 1990. Frequency domain elastic wave modeling by finite differences: A tool for cross-hole seismic imaging. Geophysics, 55, 626-632.

Pratt, R.G. and Worthington, M.H., 1990. Inverse theory applied to multi-source cross-hole tomography. Part I: Acoustic wave-equation method. Geophysical Prospecting, 38, 287-310.

Pratt, R.G., 1990. Inverse theory applied to multi-source cross-hole tomography. Part II: Elastic wave equation method. Geophysical Prospecting, 38, 311-330.

Worthington M.H., and Pratt, R.G., 1989. Wave theoretical tomographic imaging of cross-hole seismic data, in Ala, M. et al, Eds., 75 years of progress in oil field science and technology: Balkema, Rotterdam.

Pratt, R.G. and Worthington, M.H., 1988. The application of diffraction tomography to cross-hole seismic data. Geophysics, 53, 1284-1294.