Moment Tensor Representation of Surface Wave Sources

Multi-grid and Resolution Full-wave Tomography and Moment Tensor

There is a general consensus that 3D reference models can be used to isolate effects of wave propagation and thus help in improving characterization of seismic sources. Advances in computation and numerical method have made it possible to capture increasingly broadband, full wave generation and propagation in 3D earth models. The main objectives of this project are to construct hierarchical, mu...

Source Moment Tensor Estimation of Surface Mining Blasts

Locating earthquakes with surface waves and centroid moment tensor estimation

[1] Traditionally, P wave arrival times have been used to locate regional earthquakes. In contrast, the travel times of surface waves dependent on source excitation and the source parameters and depth must be determined independently. Thus surface wave path delays need to be known before such data can be used for location. These delays can be estimated from previous earthquakes using the cut-an...

Topic Moment tensor inversion and moment tensor interpretation

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Wave Propagation from Complex 3d Sources Using the Representation Theorem

In spite of extensive prior research on generation of seismic waves by underground nuclear explosions, it is still not possible to provide a complete explanation for the observed wavefields, particularly at regional distances. Spherically symmetric explosion models embedded in layered elastic media effectively model the P phases generated by explosions, and the major characteristics of some ref...