Aftershocks and Seismic Wave Efficiency

Seismic moment ratio of aftershocks with respect to main shocks

Ambient seismic wave field

The ambient seismic wave field, also known as ambient noise, is excited by oceanic gravity waves primarily. This can be categorized as seismic hum (1-20 mHz), primary microseisms (0.02-0.1 Hz), and secondary microseisms (0.1-1 Hz). Below 20 mHz, pressure fluctuations of ocean infragravity waves reach the abyssal floor. Topographic coupling between seismic waves and ocean infragravity waves at t...

Dispersion analysis and computational efficiency of elastic lattice methods for seismic wave propagation

Discrete particle methods or elastic lattice methods represent a 3D elastic solid by a series of interconnected springs arranged on a regular lattice. Generally, these methods only consider nearest neighbour interactions, i.e. they are first-order in space. These interconnected springs interacted through a force term (Hooke’s Law for an elastic body), which when viewed on a macroscopic scale pr...

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

iii Acknowledgements iii Table of

Fundamentals of Seismic Wave Propagation