Profile
Keywords: Seismology, Exploration Seismic Method, Imaging, Wave Propagation Phenomena
Education/Positions
BSc (1988), UNLP, Argentina
Ph.D. (1996), UBC, Canada
Assistant Professor, UofA, 1997-2001
Associate Professor, UofA, 2001-2005
Professor, UofA, 2005-
Chair of Physics, UofA, 2010-2015
Chair of Physics, UofA, 2016-
Recognitions
Editor-in-Chief, GEOPHYSICS, 2015-2017
2012 CSEG Medal 2014 SEG Honorary Lecturer for Central and South America
2015 CSEG Distinguished Speaker
2018 CSEG Symposium in honour of M D Sacchi
2019 SEG Virgil Kauffmann Medal
FES Funded Projects Outputs Show only Author
Title
Category
Date
Authors
Projects
3D and 5D Multichannel Singular Spectrum Analysis (MSSA) and the reconstruction of P receiver functions We apply our 5D reconstruction method to the USArray data from the Yellowstone area. Our algorithm efficiently recovers the correct timing and polarity of mantle conversions from the 410- and 660-km discontinuities, consistent with earlier reports in this area. Overall, our analysis demonstrates that working with more spatial dimensions can significantly increase data redundancy, which are conducive to signal recovery. The preconditioning of the data greatly increases our ability to visualize and characterize both known and suspected mantle interfaces.T07-C03 University of Alberta Activity 2019-12-09 T07-C03 3-D and 5-D reconstruction of P receiver functions via singular spectrum analysis This study demonstrates a new way to visualize, clean and process seismic data. The outcomes provides a blueprint for future data analysis and interpretation. This study utilized both local and international data to constrain structure in the mantle. T07-C03 University of Alberta Publication 2020-11-17 T07-C03 Edge-preserving FWI via Regularization by Denoising Invited conference paper at SIAM 2019 Mathematical and Computational Issues in Geoscience. We presented Total Variation regularization methods for solving the Full Waveform Inversion Problem in models with high-velocity contrast. T07-C04 University of Alberta Publication 2019-04-22 T07-C04 Edge-Preserving FWI via Regularization by Denoising Edge-Preserving FWI via Regularization by Denoising: Discuss the applicability of recently developed technique called Regularization via denoising to solve the Full Waveform inversion problem. This is to recover subsurface elastic parameters from seismic wavefields.T07-C04 University of Alberta Publication 2019-04-22 T07-C04 Edge-Preserving FWI via Regularization by Denoising T07-C04 University of Alberta Publication 2019-04-28 T07-C04 3D FWI on a land dataset in the presence of complex topography variations T07-C04 University of Alberta Publication 2019-04-28 T07-C04 Transform-domain noise synthesis and NMO-Stack deconvolution approach to ground roll attenuat T07-C04 University of Alberta Publication 2019-04-28 T07-C04 Ground roll attenuation via NMO-Stack deconvolution and transform-domain noise synthesis T07-C04 University of Alberta Publication 2019-04-28 T07-C04 Ground roll attenuation via NMO-Stack deconvolution and transform-domain noise synthesis T07-C04 University of Alberta Publication 2019-04-28 T07-C04 Model parametrization strategies for Newton-based acoustic full waveform inversion T07-C04 University of Alberta Publication 2019-04-28 T07-C04 Crustal attenuation beneath western North America: Implications for slab subduction, terrane accretion and arc magmatism of the Cascades In this study, a new Lg attenuation model was developed for the crust in western North America.
We find that Q varies significantly from the Cascade arc (low) to the Canadian Shield (high), which variation is caused by combined effects of scattering and intrinsic attenuation. This study also reveals a sharp boundary that delineates the subsurface extent of the Siletzia terrane.T07-C03 University of Alberta Publication 2021-04-15 Yunfeng Chen,
Gu, Y. , Farhanah Mohammed, Jingchuan Wang,
Sacchi, M. ,
" Ruijia Wang
" , Brooklin Davis Hoang Nguyen
T07-C03 Multi-dimensional reconstruction of virtual shot gathers T07-C03 University of Alberta Activity 2020-11-25 T07-C03 Passive seismic imaging and monitoring using ambient noise body waves, CaMI Field Research Station (FRS) research report– vol 5. [Published, 4 pages]T07-C03 University of Alberta, University of Calgary Publication 2020-11-30 T07-C03 Robust 3D Projection Filtering with a Generalized Loss Function Presented a novel filtering technique to attenuate erratic noise from seismic data at the IMAGE Conference held in Houston, USA, in August 2025. The abstract was accepted to be published in January; however, it has been delayed so far. T07-C04-LBP1 University of Alberta Publication 2026-02-04 T07-C04-LBP1 CountSketch MSSA for Seismic Reconstruction Developed a novel reconstruction technique for fast and memory-efficient pre-stack reconstruction required for the project. T07-C04-LBP1 University of Alberta Publication 2026-02-04 T07-C04-LBP1 Adaptive 3D Robust Projection Filtering for Erratic Noise Attenuation Full original article on projection filteringT07-C04-LBP1 University of Alberta Publication 2026-02-04 T07-C04-LBP1
