Now showing items 1-5 of 5
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 ...
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 & ...
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 ...
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 ...
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 ...