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We investigate deformation of the Earth's crust due to earthquakes and volcanoes.
Measuring deformation that occurs between earthquakes constrains how much elastic strain accumulates in the crust and helps constrain future earthquake hazard. Similarly, accumulation of magma in crustal reservoirs causes the earth's surface to swell, critical information for forecasting eruptions. In both volcanic and tectonic environments we combine measurements with physics-based models of the relevant processes to better understand these systems.
- Zheng, Y., Blackstone, L., & Segall, P. (2022). Constraints on Absolute Magma Chamber Volume From Geodetic Measurements of Trapdoor Faulting at Sierra Negra Volcano, Galapagos. Geophysical Research Letters, 49(5), e2021GL095683. https://doi.org/10.1029/2021GL095683
- Mullet, B. (2021). Stress-driven failure of cylindrical volcanic conduits. Journal of Geophysical Research: Solid Earth, 126(8), e2021JB022278. https://doi.org/2021JB022278
- Segall, P., & Anderson, K. (2021). Repeating caldera collapse events constrain fault friction at the kilometer scale. Proceedings of the National Academy of Sciences, 118(30), e2101469118. https://doi.org/10.1073/pnas.2101469118