Seismic moment tensors and kinematic source parameters

Parametrization of general seismic potency and moment tensors for source inversion of seismic waveform data

S U M M A R Y We decompose a general seismic potency tensor into isotropic tensor, double-couple tensor and compensated linear vector dipole using the eigenvectors and eigenvalues of the full tensor. Two dimensionless parameters are used to quantify the size of the isotropic and compensated linear vector dipole components. The parameters have well-defined finite ranges and are suited for non-li...

Seismic Moment Tensors and Finite-Source Analysis of Chi-Chi Aftershocks

iii Acknowledgements iii Table of

A geometric comparison of source-type plots for moment tensors

S U M M A R Y We describe a general geometric framework for thinking about source-type plots for moment tensors. We consider two fundamental examples, one where the source-type plot is on the unit sphere, and one where it is on the unit cube. The plot on the sphere is preferable to the plot on the cube: it is simpler, it embodies a more natural assumption about eigenvalue probabilities and it i...

Neural Networks to Retrieve Seismic Source Parameters

The use of supervised neural networks for the estimation of seismic source parameters from SAR interferometric data is presented in this paper. The RNGCHN software allowed the generation of the input-output pairs necessary for the learning phase of the net. After being trained, the net has been tested on real measured data. The obtained results encourage future developments of such an approach.

Decompositions of moment tensors