3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities

Details 3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities 3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3821305s&link_type=abstract

Geophysical Research Letters, Volume 38, Issue 21, CiteID L21305

Physics

Seismology: Earthquake Dynamics (1242), Seismology: Subduction Zones (1207, 1219, 1240), Structural Geology: Dynamics And Mechanics Of Faulting (8118)

Scientific paper

We perform 3D quasi-dynamic modeling of the cycle of a megathrust earthquake in the offshore Tohoku region, Japan, using a rate- and state-dependent friction law with two state variables that exhibits strong velocity weakening at high slip velocities. We set several asperities where velocity weakening occurs at low to intermediate slip velocities. Outside of the asperities, velocity strengthening occurs at low to intermediate slip velocities. At high slip velocities, strong velocity weakening with large displacements occurs both within and outside of the asperities. The rupture of asperities occurs at intervals of several tens of years, whereas megathrust events occur at much longer intervals (several hundred years). Megathrust slips occur even in regions where velocity strengthening occurs at low to intermediate slip velocities, but where velocity weakening is dominant at high slip velocities. The proposed model explains that megathrust earthquakes occur in the same subduction zone as large thrust earthquakes.

Affiliated with

Also associated with

No associations

Rating

3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with 3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 3D modeling of the cycle of a great Tohoku-oki earthquake, considering frictional behavior at low to high slip velocities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-739166