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.