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The Department of Geosciences and Princeton University congratulates Dr. Wenjie Lei on successfully defending his Ph.D. thesis: "Global Seismic Full-Waveform Inversion" on Wednesday, May 8, 2019.
Seismologists Jessica Irving and then-graduate student Wenbo Wu (who just defended his thesis last month!) used earthquake waves measured after a 1994 magnitude 8.2 earthquake to find underground mountains, at the bottom of the mantle’s “transition zone,” located 660 kilometers straight down.