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Yuyu Li

Biography

I am a member of the UIUC Volcano Group under the mentorship of Dr. Trish Gregg. My PhD research focuses on understanding volcanic processes and assessing the stability of magma storage systems and the eruption potential of Aleutian volcanoes. My work involves geophysical data (earthquakes and ground deformation) analysis, numerical modeling using finite element methods (FEM), and advanced data assimilation techniques such as the Ensemble Kalman Filter (EnKF).

My work on Veniaminof volcano involved applying finite element modeling (FEM) to investigate magma chamber evolution and identify key factors influencing eruption likelihood, including conditions for stealthy eruptions—those without significant warning signals. At Westdahl volcano, I applied EnKF method that assimilates the data (observed ground deformation) and the model (3D FEM that track evolving state of magma system) to understand why significant inflation over the past 30 years has not led to an eruption and to assess the stability of its magma storage system. To gain a broader understanding of eruption triggering mechanisms across the subduction zone, I compared the precursory signals and evolving states of Veniaminof, Westdahl, and Okmok volcanoes. The significance of my research lies in its potential to improve early warning systems and mitigate hazards for communities near active volcanoes.