Crustal stress & geodynamics
As part of my work at the Stanford Stress & Crustal Mechanics Group and the Stanford Center for Induced & Triggered Seismicity, I am working with Mark D. Zoback to build a high spatial resolution stress map of the central and eastern USA. We have compiled >400 new orientations of the maximum horizontal compression (SHmax) as well as a map of the faulting regime (relative principal stress magnitudes). Our new data show a surprisingly variable stress field across parts of the region—and broadly consistent patterns in others—which provides an opportunity to understand the contribution of tectonic and local, geodynamic factors to the stress field.
In 2016, we published a paper in Geophysical Research Letters presenting our first 200 stress orientations. The results show a surprisingly variable but coherent stress field across the area. In 2018, we added some 100 more stress orientations in the prolific Permian Basin of west Texas and southeast New Mexico. Our stress map continues to grow.