Thoku-oki Fault Zone Frictional Heat Measured During IODP Expeditions 343 and 343T Academic Article uri icon

abstract

  • 2019, Oceanography Society. All rights reserved. During the March 11, 2011, M w 9.1 Thoku-oki earthquake, the plate boundary fault slipped an astonishing 50 m or more, with the slip extending all the way to the seafloor within the Japan Trench. The result was a much larger earthquake and tsunami than expected as well as considerable devastation on land. The earthquake challenged our understanding of subduction zone mechanics but also presented an opportunity to resolve long-standing questions regarding the amount of frictional resistance faults exhibit during earthquakes, resistance that influences the amount of fault slip and associated tsunami hazards. Here we report on how scientific ocean drilling successfully allowed the measurement of frictional heating within the fault zone that ruptured during the Thoku-oki earthquake.

published proceedings

  • Oceanography

author list (cited authors)

  • Fulton, P., Brodsky, E., Mori, J., & Chester, F.

publication date

  • January 1, 2019 11:11 AM