We follow several approaches to earthquake source imaging, which translates into mapping the space-time evolution of the earthquake rupture process on the fault plane(s). In so doing, we estimate kinematic source parameters, like the displacement (=slip) on the fault, the rupture propagation speed, and the slip-rate function (and its parameterization). In earthquake source inversion, we deploy nonlinear inversion methods, linearized inversions, as well as Bayesian estimation of the postiori PDF (probability density function), using seismic and geodetic data, to quantify the earthquake rupture evolution. This work is tightly linked to our Source Inversion Validation project, an international collaboration to verify source inversion methods and to develop methods to rigorously quantify the uncertainties in earthquake source inversion.
We develop an online collaboration platform to disseminate resources related to earthquake research: eQuake-RC. This site serves as an access-point to SRCMOD, a finite-fault rupture model database, the Source Inversion Validation(SIV) site with its wiki and lists of benchmarks, and computational tools for earthquake rupture model generationand related software.
The Source Inversion Validation project (SIV) constitutes an international collaboration, embedded in the research activities of the Southern California Earthquake Center (SCEC), and gathers earthquake scientists to verify, validate and improve current strategies for earthquake source inversion. The goal is to develop rigorous uncertainty quantification for earthquake source imaging. The CES-team leads the SIV-efforts at SCEC, and is responsible for the corresponding online cooperation platform.