New paper in Science! We used a fiber-optic array to tackle the tricky problem of imaging an offshore earthquake (2024 M7 Mendocino Fault EQ). In the process, we learned new things about supershear transitions and how fiber arrays could help with EEW. Read more here: www.science.org/doi/10.1126/...

New paper out! Last chapter of my PhD. We made a long-term seismicity and MT catalog for Ridgecrest using a state-of-the-art workflow. We then used the catalog to make new insights on the stress evolution throughout the sequence using point process theory. Check it out here: doi.org/10.1093/gji/...

With these observations we can do all sorts of interesting science. We use these measurements to invert for fine-scale profiles of Moho depth throughout SoCal. We find that the Garlock Fault penetrates the mantle and offsets the Moho. We also see a “Moho plateau” under the Coso Volcanic Field.

We simply use autocorrelation to find the Moho reflected phase. This works really well because the direct phase and the Moho phase generate similar scattered waves. When applied to several dozen SoCal EQs, we end up with over 200,000 observations that sample the Moho that are as clear as day!

So glad there are people in this world willing to port old compiled codes to python. Often thankless but super impactful work.

First post is a plug for our new paper on the Cascadia SZ led by Hao Guo. We carefully relocated events in the Gorda slab and computed their source parameters. Our results suggest lower effective stress in the slab crust and, by extension, the megathrust! Check it out here: doi.org/10.1785/0220...