Now showing items 1-5 of 5
Rapid Full-Wave Centroid Moment Tensor (CMT) Inversion in a Three-Dimensional Earth Structure Model for Earthquakes in Southern California
Contributor:Lee, En Jui; Chen, Po; Jordan, Thomas H.; Wang, L.
A central problem of seismology is the inversion of regional waveform data for models of earthquake sources. In regions such as Southern California, preliminary 3-D earth structure models are already available, and efficient ...
Perturbation Kernels for Generalized Seismological Data Functionals (GSDF)
Contributor:Chen, Po; Jordan, Thomas H.; Lee, En Jui
In seismic waveform analysis and inversion, data functionals can be used to quantify the misfit between observed and model-predicted (synthetic) seismograms. The generalized seismological data functionals (GSDF) of Gee & ...
Automating Seismic Waveform Analysis For Full 3-D Waveform Inversions
Contributor:Lee, En Jui; Chen, Po
We present a semi-automatic seismic waveform selection algorithm that can be used in full 3-D waveform inversions for earthquake source parameters and/or earth structure models. The algorithm is applied on pairs of observed ...
Resolving Fault Plane Ambiguity for Small Earthquakes
Contributor:Chen, Po; Lee, En Jui; Jordan, Thomas H.; Zhao, L.
We have developed an automated procedure to resolve fault-plane ambiguity for small to medium-sized earthquakes (2.5 ≤ ML ≤ 5) using synthetic Green's tensors computed in a 3-D earth structure model and applied this procedure ...
Multicomponent Pre-Stack Seismic Waveform Inversion in Transversely Isotropic Media Using a Non-Dominated Sorting Genetic Algorithm
Contributor:Padhi, Amit; Mallick, Subhashis
Inversion of band- and offset-limited single component (P wave) seismic data does not provide robust estimates of subsurface elastic parameters and density. Multicomponent seismic data can, in principle, circumvent this ...