Analyzing earthquake waveforms to investigate tectonic and magmatic processes
Seismic waves hold information about how and where an earthquake initiated, the velocity structure along the wave path towards the seismic stations, and the associated stress release. By modelling seismic waves, we can invert for the seismic moment tensor, a simple mathematical representation of a seismic point source based on generalized force couples, which contain information on the size and mechanism of the seismic event. Interpreting these moment tensors in light of various complementary geologic, geophysical, and geodetic datasets reveal insights into the local stress field, which are important to understand underlying tectonic and magmatic processes and to inform hazard studies. I will present case studies from my research in different tectonic settings around the world, as well as talk about some of the latest breakthroughs in earthquakes research.