Welcome to the Global Seismology and Tectonics (GSAT) Group of the Geosciences Department at the University of Arizona. Our research focuses on understanding the structure and active tectonic processes associated with megathrusts, mountain building, subduction, and strike-slip boundaries using passive broadband seismology. Our current research is concentrated on the South America, the western US, Japan, and Turkey.

News and Updates


Daniella DellaGiustina succesfully defended her PhD!
Audrey Dunham is awarded GeoDaze's Best Overall Talk
Clint Koch succesfully defended his PhD!

Latest Publications

Kiser, E. and Kehoe, H.L., 2021. The hazard of coseismic gaps: The 2021 Fukushima earthquake. Geophys. J. Int'l doi:10.1093/gji/ggab208.

Koch, C., Delph, J., Beck, S.L., Lynner,C., Ruiz, M., Hernandez, S., Samaniego, P., Meltzer, A., Mothes, P., and Hidalgo, S., 2021. Crustal thickness and magma storage beneath the Ecuadorian arc. J. of S. Am. Earth Sci. doi: 10.1016/j.jsames.2021.103331.

Kiser, E., Levander, A., Schmandt, B., and Hansen, S., 2021. Seismic Evidence of Bottomā€Up Crustal Control on Volcanism and Magma Storage near Mount St. Helens. Geophys. Res. Let. doi: 10.1029/2020GL090612.