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The mega-splay fault in the Nankai Trough subduction zone interpreted from 3D seismic images

Brownbag Talks

The mega-splay fault in the Nankai Trough subduction zone interpreted from 3D seismic images

Nathan Bangs
UTIG Senior Research Scientist, PH.D.

SEMINAR OVERIEW:
In April-May of 2006, we acquired a 3D seismic reflection data set from the Nankai Trough Subduction zone to examine the splay fault system at the updip end of the subduction megathrust, where it regularly produces >Mw 8.0 earthquakes and large tsunami.  These data were the first 3D seismic reflection data acquired by a commercial contractor for marine academic
research purposes.  In the past 16 months, these data were processed with pre-stack time migration and we have made initial interpretations.  In this presentation I will show what we are now able to image with the high-quality 3D seismic data and the initial results of our examination of this splay fault system.