Research

ambient seismic noise · dv/v

so far

I'm pretty new to this field and still figuring things out.

I got into it after reading Brenguier et al. (2008, Nature Geoscience). They used just the background noise recorded by seismometers to track small changes in seismic velocity under Piton de la Fournaise volcano, and saw the velocity drop before eruptions. That's basically why I wanted to work on this.

thesis

For my master's thesis I wrote a noise-based dv/v workflow from scratch: getting the raw data, cleaning it, cross-correlating and stacking, and then measuring the velocity changes.

I started with the volcano case but couldn't get a result I trusted, which taught me how tricky these small signals are. So I moved to the 2004 Parkfield earthquake (Brenguier et al. 2008, Science), and got the coseismic velocity drop there.