Earth Sciences Division (ESD) Department of Energy (DOE) Lawrence Berkeley National Laboratory (LBNL)

Geophysics Department Core Capability:
Computational Geophysics

Gregory Newman and Michael Commer developed the EMGEO - 2009 R&D100 winnerThe focus of this research area is to continue the development of efficient, 3D numerical codes for modeling seismic wave propagation and electromagnetic wave propagation and diffusion. The challenge is to develop accurate and efficient computer codes capable of modeling the seismic and electromagnetic response in complex geologic media, including formation anisotropy or multiscale heterogeneities in the form of fractures, faults, and/or patchy saturation and rough topography. The Geophysics Department has experience in a variety of computational approaches, including boundary integral equation, global matrix, finite difference, spectral element, discrete element, and asymptotic ray methods. We exploit large parallel computing systems, utilizing tens of thousands of processors, for realistic geophysical field simulation. Our codes also serve as the computational engines for the next generation of modeling-based deterministic and stochastic inversion algorithms. This research is performed using the supercomputers at the National Energy Research Scientific—Computing Center (NERSC) at Berkeley Lab, and the PC cluster maintained by Berkeley Laboratory’s Information Technology Division on behalf of the Geophysics Department.