Explore the Tohoku Earthquake and its resulting tsunami in this compelling AGU Frontiers of Geophysics Lecture. Join Professor Emeritus Hiroo Kanamori from the California Institute of Technology as he shares a personal account that bridges scientific understanding with firsthand experience. Delve into topics such as asperity, multisegment events, and plate boundary dynamics, while examining the work of Newcombe McCann from 1987. Gain insights into the intersection of science and practical applications, and consider future possibilities in the field of geophysics. Conclude with a thought-provoking Q&A session that encourages further discussion and exploration of this impactful geological event.