P u b l i c a t i o n s

Referred Journals

  1. Gómez, J.D. and Velis, D.R., 2016, A simple method inspired by empirical mode decomposition for denoising seismic data, Geophysics (in press).
  2. 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).
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. Pérez, D.O. y Velis, D.R., 2012, Atributos AVO/AVA de alta resolución utilizando very fast simulated annealing, Geoacta, 37, 1, 19-36.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. Sabbione, J.I. and Velis, D.R., 2010, Automatic first-breaks picking: new strategies and algorithms: Geophysics, 75, 4, V67-76.
  15. Rubino, J.G. and Velis, D.R., 2009, Thin-bed prestack spectral inversion: Geophysics, 74, 4, R49–R57.
  16. Velis, D.R., 2008, Stochastic sparse-spike deconvolution: Geophysics, 73, 1, R1-R9.
  17. Velis, D.R., 2007, Statistical segmentation of geophysical log data: Mathematical Geology, 39, 4, 409–417.
  18. 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.
  19. Velis, D.R., 2005, Constrained inversion of reflection data using Gibbs’ sampling: Journal of Seismic Exploration. 14, 31–49.
  20. Velis, D.R., 2003, Estimating the distribution of primary reflection coefficients: Geophysics, 68, 1417–1422.
  21. Velis, D.R. and Ulrych, T.J., 2001, Simulated annealing ray tracing in complex three-dimensional media: Geop. J. Internat., 145, 2, 447–459.
  22. Velis, D.R., 2001, Traveltime inversion for 2-D anomaly structures, Geophysics, 66, 1481–1487.
  23. 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.
  24. 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.
  25. Velis, D.R. and Ulrych, T.J., 1996, Simulated annealing wavelet estimation via fourth-order cumulant matching: Geophysics, 61, 1939–1948.
  26. Velis, D.R. and Ulrych, T.J., 1996, Simulated annealing two-point ray tracing: Geophysical Research Letters, 23, 2, 201–204.
  27. Ulrych, T.J., Velis, D.R., and Sacchi, M.D., 1995, Wavelet estimation revisited: The Leading Edge, 14, 1139–1143.
  28. Velis, D.R. and Comínguez, A.H., 1994, Noniterative seismic wavelet extraction in the f-x domain: Journal of Seismic Exploration, 6, 195–202.
  29. Sacchi, M.D., Velis D.R., and Comínguez, A.H., 1994, Minimum entropy deconvolution with frequency domain constraints: Geophysics, 59, 938–945.
  30. Velis, D.R. y Comínguez, A.H., 1992, Deconvolución multicanal de la traza sísmica mediante un método determinista: Geoacta, 19, 71–81.>
  31. 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.
  32. 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

  1. 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.
  2. 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.
  3. 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.
  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).
  5. 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.
  6. 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

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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
  22. 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.
  23. 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.
  24. 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.
  25. 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.
  26. 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.
  27. 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.
  28. 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.
  29. Velis*, D.R., 2005, Segmentation of well log data, Expanded Abstracts, 9th Internat. Congress: Brazilian Geophys. Soc., P298, Salvador, Brazil.
  30. 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.
  31. 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.
  32. 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.
  33. 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.
  34. Velis, D.R., 2002, On the estimation of the distribution of seismic reflection sequences, 64th Mtg., EAGE Extended Abstracts, P181, Florence, Italy.
  35. 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.
  36. 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.
  37. Velis*, D.R., 1998, Nonlinear traveltime inversion: a parametric approach, Expanded Abstracts, 68th Ann. Mtg.: Soc. Expl. Geophys., 1720–1723, New Orleans, USA.
  38. Velis*, D.R., 1998, Nonlinear traveltime seismic tomography: IV World Congress of Computational Mechanics, Buenos Aires, Argentina.
  39. 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.
  40. 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.
  41. Velis*, D.R., 1996, Nonlinear traveltime optimization for ray tracing in complex 3D media: V Congreso Argentino de Mecánica Computacional, MECOM’96, Tucumán, Argentina.
  42. 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.
  43. 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.
  44. 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.
  45. 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.
  46. 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.
  47. 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.
  48. 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.
  49. 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
(*) Speaker