P u b l i c a t i o n s
Referred Journals
- Gómez, J.D. and Velis, D.R., 2016, A simple method inspired by empirical mode decomposition for denoising seismic data, Geophysics (in press).
- Pérez, D.O., Velis, D.R. and Sacchi, M.D., 2015, Three-term inversion of prestack seismic data using a weighted L2,1 mixed-norm, Geophysical Prospecting (submitted).
- Velis, D.R. and Sabbione, J.I. and Sacchi, M.D., 2015, Fast and automatic microseismic phase-arrival detection and denoising by pattern recognition and reduced-rank filtering, Geophysics, 80, 6, WC25-WC38.
- Sabbione, J.I. and Sacchi, M.D and Velis, D.R., 2015, Radon transform-based microseismic event detection and signal-to-noise ratio enhancement: Journal of Applied Geophysics, 113, 51-63.
- Caspari, E., Qi, Q., Lopes, S., Lebedev, M., Gurevich, B., Rubino, J., Velis, D., Clennell, M., and Müller, T., 2014, Wave attenuation in partially saturated porous rocks - New observations and interpretations across the scales, The Leading Edge, 33, 6, 606-611.
- Pérez, D.O., Velis, D.R. and Sacchi, M.D., 2013, High-resolution prestack seismic inversion using a hybrid FISTA least-squares strategy: Geophysics, 78, 5, R185-R195.
- Sabbione, J.I. and Velis, D.R., 2013, A robust method for microseismic event detection based on automatic phase pickers: Journal of Applied Geophysics, 99, 42--50.
- Pérez, D.O. y Velis, D.R., 2012, Atributos AVO/AVA de alta resolución utilizando very fast simulated annealing, Geoacta, 37, 1, 19-36.
- Guerrero Sánchez, R.C., Velis, D.R. y Rubino, J.G., 2012, Inversión espectral prestack simultánea de ondas PP y PS para la caracterización cuantitativa de capas delgadas, Geoacta, 37, 1, 37-52.
- Rubino, J.G., Velis, D.R. and Holliger, K., 2012, Permeability effects on the seismic response of gas reservoirs: Geophys. J. Int., 189, 1, 448-468.
- Rubino, J.G. and Velis, D.R., 2011, Seismic characterization of thin beds containing patchy carbon dioxide-brine distributions: A study based on numerical simulations: Geophysics, 76, 3, R57-R67.
- Rubino, J.G. and Velis, D.R., and Sacchi, M.D. 2011, Numerical analysis of wave-induced fluid flow effects on seismic data: Application to monitoring of CO2 storage at the Sleipner Field, J. Geophys. Res., 116, B03306, doi:10.1029/2010JB007997.
- Sabbione, J.I., Rosa, M.L, Velis, D.R. and Sabbione, N.C., 2011, Análisis comparativo de diferentes métodos de picado automático de fases en terremotos registrados en la Estación Sismológica de La Plata (LPA): Geoacta, 36, 189-209.
- Sabbione, J.I. and Velis, D.R., 2010, Automatic first-breaks picking: new strategies and algorithms: Geophysics, 75, 4, V67-76.
- Rubino, J.G. and Velis, D.R., 2009, Thin-bed prestack spectral inversion: Geophysics, 74, 4, R49–R57.
- Velis, D.R., 2008, Stochastic sparse-spike deconvolution: Geophysics, 73, 1, R1-R9.
- Velis, D.R., 2007, Statistical segmentation of geophysical log data: Mathematical Geology, 39, 4, 409–417.
- Velis, D.R. and Sacchi, M.D., 2006, Comment on “Non-minimum phase wavelet estimation using second- andExpanded Abstracts, 30, 1, 340-344, third-order moments”, by Wenkai Lu: Geophysical Prospecting, 54, 4, 487–488.
- Velis, D.R., 2005, Constrained inversion of reflection data using Gibbs’ sampling: Journal of Seismic Exploration. 14, 31–49.
- Velis, D.R., 2003, Estimating the distribution of primary reflection coefficients: Geophysics, 68, 1417–1422.
- Velis, D.R. and Ulrych, T.J., 2001, Simulated annealing ray tracing in complex three-dimensional media: Geop. J. Internat., 145, 2, 447–459.
- Velis, D.R., 2001, Traveltime inversion for 2-D anomaly structures, Geophysics, 66, 1481–1487.
- Ulrych, T.J., Velis, D.R., Woodbury, A.D., and Sacchi, M.D., 2000, L-moments and C-moments: Stoch. Envir. Res. and Risk Assessment, 14, 1, 50–68.
- Sacchi, M.D., Velis, D.R., and Ulrych, T.J., 1998: Non-minimum phase wavelet estimation using polycepstra, Journal of Seismic Exploration, 7, 159–171.
- Velis, D.R. and Ulrych, T.J., 1996, Simulated annealing wavelet estimation via fourth-order cumulant matching: Geophysics, 61, 1939–1948.
- Velis, D.R. and Ulrych, T.J., 1996, Simulated annealing two-point ray tracing: Geophysical Research Letters, 23, 2, 201–204.
- Ulrych, T.J., Velis, D.R., and Sacchi, M.D., 1995, Wavelet estimation revisited: The Leading Edge, 14, 1139–1143.
- Velis, D.R. and Comínguez, A.H., 1994, Noniterative seismic wavelet extraction in the f-x domain: Journal of Seismic Exploration, 6, 195–202.
- Sacchi, M.D., Velis D.R., and Comínguez, A.H., 1994, Minimum entropy deconvolution with frequency domain constraints: Geophysics, 59, 938–945.
- Velis, D.R. y Comínguez, A.H., 1992, Deconvolución multicanal de la traza sísmica mediante un método determinista: Geoacta, 19, 71–81.>
- Sacchi, M.D., Velis, D.R. y Comínguez, A.H., 1992, Estudio comparativo de dos normas de simplicidad para la deconvolución sísmica (P II): Geoacta, 19, 181–194.
- Velis, D.R. y Comínguez, A.H., 1989, Diseño de filtros digitales de respuesta impulsiva finita y fase lineal mediante una aproximación de Chebychev óptima: Geoacta, 16, 245–259.
Book chapters
- Müller, Tobias M, Caspari, Eva, Qi, Quaiomu, Rubino, J. Germán, Velis, D.R., Lopes, Sofia, Lebedev, Maxim, Gurevich, Boris, 2015, Acoustics of Partially Saturated Rocks: Theory and Experiments: Chapter 3 in ``Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs: New Theories, Methods and Applications'', 370 pages, p. 45-76, Elsevier, ISBN 978-0-12-420151-4.
- Velis, D.R., 2014, Handling equality and inequality linear constraints in simulated annealing, Chapter 2 in ``Simulated Annealing: Strategies, Potential Uses and Advantages'', edited by Marcos Tsuzuki and Thiago de Castro Martins, Mathematical Research Develop., Nova Publishers, New York, p. 47-53. ISBN 978-1-63117-268-7.
- Velis, D.R., 2010, Multivariate zonation of logging data: Chapter 13 in “Advances in Environmental Research Volume 2”, edited by Max Haider and Thomas Müller, Nova Science Publishers, Inc., Hardcover, ISBN 978-1-60741-793-4.
- Velis, D.R., 2010, Multivariate zonation of logging data: Chapter 9 in “Cluster Computing and Multi-Hop Network Research”, edited by Ciceron Jimenez and Maurice Ortego, Nova Science Publishers, Inc., Hardcover, ISBN 978-1-60876-186-9 (previous work).
- Ulrych, T.J., Velis, D.R., and Sacchi, M.D., 1996, Wavelet estimation revisited: in “Seismic Signature Estimation and Measurement”, compiled by O.M. Osman and E. Robinson, edited by D. Ebrom, SEG’s Geophysical Reprint Series.
- Sacchi, M.D., Velis D.R. and Comínguez, A.H., 1996, Minimum entropy deconvolution with frequency domain constraints: in “Deconvolution II”, compiled by E. Robinson and O.M. Osman, edited by D. Ebrom, SEG’s Geophysical Reprint Series.
Conference Proceedings and Presentations
- Gómez, J.L. and Velis, D.R., 2016, An edge-preserving frequency-offset algorithm for seismic data denoising, 86th SEG Annual Meeting, Dallas, October 16-21.
- Gómez, J.L. and Velis, D.R., 2015, A fast empirical mode decomposition for noise attenuation of seismic data, 85th SEG Annual Meeting, New Orleands, October 18-23.
- Gómez*, J.L., Velis, D.R., and Roizman, M., 2015, Fast empirical seismic denoising, 14th International Congress of the Brazilian Geophysical Society, August 3-7.
- Gómez, Julián L. y Velis, D.R., 2014, Improving the instantaneous traveltime picking of seismic events using empirical mode decomposition, XXVII Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas, 10-14 Septiembre, San Juan, Argentina.
- Lagos*, R. Soledad y Velis, D.R., 2014, Aplicaciones del análisis de polaridad de ondas a la localización de eventos microsísmicos, XXVII Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas, 10-14 Septiembre, San Juan, Argentina.
- Pérez*, Daniel O., Velis, D.R., and Sacchi, M.D., 2014, The use of mixed norms to constrain the inversion of prestack seismic data, XXVII Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas, 10-14 Noviembre, San Juan, Argentina.
- Guerrero*, Ramsis C. y Velis, D.R., 2014, Modelado de la respuesta sísmica de una capa delgada, Simposio La Geofísica: Puente de Integración, IX Congreso de Exploración y Desarrollo de Hidrocarburos, Mendoza, Argentina.
- Pérez*, Daniel O. and Velis, D.R., 2014, Blocky inversion of prestack seismic data using mixed-norms, Expanded Abstracts, pp. 3106-3111, 84th SEG Annual Meeting, Denver, October 26-31.
- Lagos*, R. Soledad, Sabbione, Juan I., and Velis, D.R., 2014, Very fast simulated annealing and particle swarm optimization for microseismic event location, Expanded Abstracts, pp. 2188-2192, 84th SEG Annual Meeting, Denver, October 26-31.
- Sabbione*, Juan I., Sacchi, M.D., and Velis, D.R., 2013, Microseismic data denoising via an apex-shifted hyperbolic Radon transform, Expanded Abstracts, pp. 2155-2161, 83rd SEG Annual Meeting, Houston, September 22-27.
- Pérez*, Daniel O., Velis, D.R., and Sacchi, M.D., 2013, Estimating sparse-spike attributes from AVA data using a Fast Iterative Shrinkage-Thresholding Algorithm and least squares, Expanded Abstracts, pp. 3062-3067, 83th SEG Annual Meeting, Houston, September 22-27.
- Pérez*, Daniel O., Velis, D.R., and Sacchi, M.D., 2013, A hybrid strategy based on fast iterative shrinkage-thresholding algorithm and very fast simulated annealing: application to the prestack seismic inverse problem, Mecánica Computacional XXXII, 1701-1713, XX Congreso sobre Métodos Numéricos y sus Aplicaciones (ENIEF'13), Mendoza, Argentina.
- Velis*, Danilo R., Juan I. Sabbione y Mauricio D. Sacchi, 2013, Fast and robust microseismic event detection using very fast simulated annealing, European Geosciences Union (EGU) General Assembly 2013, Vienna, Austria, Abril 7-12.
- Pérez*, Daniel O., Velis, D.R., and Sacchi, M.D., 2012, Inversion of prestack seismic data using FISTA: Mecánica Computacional XXXI, 3255-3263, X Congreso Argentino de Mecánica Computacional, MECOM 2012, Salta, Argentina.
- Sabbione*, Juan I. and Velis, D.R., 2012, An automatic method for microseismic events detection based on earthquake phase pickers, Expanded Abstracts, 82th SEG Annual Meeting, Las Vegas, November 6-9.
- Pérez*, Daniel and Velis, D.R., 2011, Atributos AVO/AVA de alta resolución a partir de datos prestack, en Integración: acercando la ondícula al trépano, 145–154, VIII Congreso de Exploración y Desarrollo de Hidrocarburos, Mar del Plata, Argentina.
- Guerrero Sánchez*, Ramsis C., 2011, Inversión espectral prestack de ondas PP y PS para capas delgadas, en Integración: acercando la ondícula al trépano, 155-166, VIII Congreso de Exploración y Desarrollo de Hidrocarburos, Mar del Plata, Argentina.
- Velis, D.R. and Rubino*, G., 2011, Quantitative characterization of CO2-bearing thin layers at the Sleipner field using spectral inversion, Expanded Abstracts, 30, 1, 2502-2506, 81th SEG Annual Meeting, San Antonio, September 18-23.
- Pérez*, Daniel and Velis, D.R., 2011, Sparse-spike AVO/AVA attributes from seismic data, Expanded Abstracts, 30, 1, 340-344, 81th SEG Annual Meeting, San Antonio, September 18-23.
- Pérez*, D.O. and Velis, D.R., 2010, Inversión sparse-spike de datos sísmicos prestack, Trabajos Extensos, 164-169, XXV Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas, Córdoba, Argentina.
- Sabbione*, J.I. and Rosa, M.L. and Velis, D.R. and Sabbione, N.C., 2009, Detección semi-automática de fases de terremotos registrados en la estación sismológica de La Plata (LPA), XXIV Reunión Científica de la Asociación Argentina de Geofísicos y Geodestas, Mendoza, Argentina
- Velis*, D.R., 2009, Deciphering hidden periodicities using the information entropy: application to sunspot data, III Convención Cubana de Ciencias de La Tierra, La Habana, Cuba.
- Sabbione*, J.I. and Velis, D.R., 2009, Nuevas técnicas y algoritmos para el picado automático de primeros arribos sísmicos, III Convención Cubana de Ciencias de La Tierra, La Habana, Cuba.
- Rubino, J.G. and Velis*, D.R., 2008, Thin-bed spectral inversion using prestack data, Simposio La Geofísica: integradora del conocimiento del subsuelo, 289–300, VII Congreso de Exploración y Desarrollo de Hidrocarburos, Mar del Plata, Argentina.
- Sabbione*, J.I. and Velis, D.R., 2008, First arrivals picking using fractal dimension analysis, Simposio La Geofísica: integradora del conocimiento del subsuelo, 187–200, VII Congreso de Exploración y Desarrollo de Hidrocarburos, Mar del Plata, Argentina.
- Soldo*, J. and Velis, D.R. and Lafourcade, P., 2008, Estrategias de procesamiento para el aumento de la resolución sísmica vertical basada en algoritmos, Simposio La Geofísica: integradora del conocimiento del subsuelo, 301-320, VII Congreso de Exploración y Desarrollo de Hidrocarburos, Mar del Plata, Argentina.
- Guarracino*, L. and Velis, D.R., 2007, A hybrid simulated annealing and gradient-based algorithm for the estimation of unsaturated soil parameters, Mecánica Computacional XXVI, 1061–1071, XVI Congreso sobre Métodos Numéricos y sus Aplicaciones (ENIEF’07), Córdoba, Argentina.
- Velis*, D.R., 2006, Parametric sparse-spike deconvolution and the recovery of the acoustic impedance, Expanded Abstracts, 76th Ann. Mtg.: Soc. Expl. Geophys., 2141-2144, New Orleans, USA.
- Velis*, D.R., 2005, Segmentation of well log data, Expanded Abstracts, 9th Internat. Congress: Brazilian Geophys. Soc., P298, Salvador, Brazil.
- Rubino*, J.G. and Velis, D.R., 2004, Simulated annealing para la localización de terremotos, Mecánica Computacional, 23, 3091–3102, XIV Congreso sobre Métodos Numéricos y sus Aplicaciones (ENIEF’04), San Carlos de Bariloche, Argentina.
- Zanca*, G. and Velis, D.R., 2004, Tomografía de refracción 2-D para la determinación de capas someras, XXII Reunión Científica de la Asoc. Argentina de Geofísicos y Geodestas, Buenos Aires, Argentina.
- Rubino*, J.G. and Velis, D.R., 2004, Localización de eventos sísmicos: un problema de optimización no-lineal: XXII Reunión Científica de la Asoc. Argentina de Geofísicos y Geodestas, Buenos Aires, Argentina.
- Velis*, D.R., 2003, Segmentación estadística de series de tiempo, Mecánica Computacional, 22, 1518–1526, XIII Congreso sobre Métodos Numéricos y sus Aplicaciones (ENIEF’03), Bahía Blanca, Argentina.
- Velis, D.R., 2002, On the estimation of the distribution of seismic reflection sequences, 64th Mtg., EAGE Extended Abstracts, P181, Florence, Italy.
- Velis*, D.R., 2000, Density Estimation using non-conventional statistics, Mecánica Computacional 19, 359–365, XI Congreso sobre Métodos Numéricos y sus Aplicaciones (ENIEF’00), Bariloche, Argentina.
- Velis*, D.R. and Ulrych, T.J., 1999, Ray tracing by simulated annealing in complicated 3-D models, Expanded Abstracts, 6th Internat. Congress: Brazilian Geophys. Soc. (RIO’99), P098, Rio de Janeiro, Brazil.
- Velis*, D.R., 1998, Nonlinear traveltime inversion: a parametric approach, Expanded Abstracts, 68th Ann. Mtg.: Soc. Expl. Geophys., 1720–1723, New Orleans, USA.
- Velis*, D.R., 1998, Nonlinear traveltime seismic tomography: IV World Congress of Computational Mechanics, Buenos Aires, Argentina.
- Sacchi*, M.D., Ulrych, T.J., and Velis, D.R., 1997, Statistical source estimation using the cepstrum of higher order cumulants: CSEG National Convention, Calgary, Canada.
- Sacchi*, M.D., Velis, D.R., and Ulrych, T.J., 1996, Wavelets via polycepstra, Expanded Abstracts, 66th Ann. Internat. Mtg.: Soc. Of Expl. Geophys., 1583–1586, Denver, USA.
- Velis*, D.R., 1996, Nonlinear traveltime optimization for ray tracing in complex 3D media: V Congreso Argentino de Mecánica Computacional, MECOM’96, Tucumán, Argentina.
- Matson, K., Li, X., Sacchi, M.D., Ulrych*, T.J., and Velis, D.R., 1995, Some new trends in tomography inversion: SEGJ 3rd Int. Symposium on Geotomography, Tokyo, Japan.
- Velis*, D.R. and Ulrych, T.J., 1995, Traveltime tomography using very fast simulated annealing, 65th Ann. Mtg.: Soc. of Expl. Geophys., 1055–1057, Houston, USA.
- Velis*, D.R. and Ulrych, T.J., 1995, Improved wavelet estimation using fourth-order cumulants based on very fast simulated annealing, CSEG National Convention, 143–144, Calgary, Canada.
- Velis, D.R. and Comínguez*, A.H., 1993, F-x (frequency-offset) signature extraction from seismic data, V Reunión de Trabajo en Proc. de la Información y Control, RPIC’93, Tucumán, Argentina.
- Velis*, D.R. y Comínguez, A.H., 1992, Una nueva estrategia determinista para la deconvolución multicanal de la traza sísmica, 17 Reunión Científica de la Asoc. Argentina de Geofísicos y Geodestas, Buenos Aires, Argentina.
- Sacchi, M.D, Velis*, D.R. y Comínguez, A.H., 1992, Deconvolución de trazas sísmicas mediante un criterio de mínima estructura en el dominio de la frecuencia, 17Reunión Científica de la Asoc. Argentina de Geofísicos y Geodestas, Buenos Aires, Argentina.
- Sacchi*, M.D., Velis, D.R. y Comínguez, A.H., 1991, Estudio comparativo de dos normas de simplicidad para la deconvolución sísmica (Parte I), IV Reunión de Trabajo en Proc. de la Información y Control, RPIC’91, Buenos Aires, Argentina.
- Velis*, D.R. and Comínguez, A.H., 1990, Diseño de filtros digitales mediante una aproximación de Chebychev óptima, 16Reunión Científica de la Asoc. rgentina de Geofísicos y Geodestas, Bahía Blanca, Argentina