Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake

Details Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3905307t&link_type=abstract

Geophysical Research Letters, Volume 39, Issue 5, CiteID L05307

Physics

Seismology: Earthquake Source Observations (1240), Seismology: Earthquake Interaction, Forecasting, And Prediction (1217, 1242, 4315), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Seismology: Subduction Zones (1207, 1219, 1240), Seismology: Tomography (6982, 8180)

Scientific paper

The 2011 Tohoku-Oki earthquake (Mw9.0) ruptured a large portion of the plate boundary where the coupling was considered weak and represented by sparsely distributed small asperities. A typical asperity break produced an event of around Mw7.5 accompanied by a subsequent expansion of aftershock activity beyond the main rupture zone. Unlike previous large earthquakes, the Mw9.0 earthquake sequence does not show much spatial expansion of aftershock activity, but the areas of slip deficit in the main rupture zone are progressively filled in by aftershocks. We show a clear image of segmentation of physical properties in the subducted slab that has been revealed by joint tomography of P and S wave arrivals. The mapped variations separate the zones of dominant high-frequency radiation down-dip and dominant low-frequency radiation up-dip on the mainshock fault. These changes indicate significant variations in the effective plate coupling that interlocked the source areas of the past distinct earthquakes.

Affiliated with

Also associated with

No associations

Rating

Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake 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 Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interlocking of heterogeneous plate coupling and aftershock area expansion pattern for the 2011 Tohoku-Oki Mw9 earthquake will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1559163