Connotea
CiteULike
del.ico.us
BibSonomyAbstract
Initiation of plate boundary slip in the Nankai Trough off the Muroto peninsula, southwest Japan
Ocean Research Institute, The University of Tokyo, Tokyo, Japan
Graduate School of Engineering, Kyoto University, Kyoto, Japan
Graduate School of Engineering, Kyoto University, Kyoto, Japan
Ocean Research Institute, The University of Tokyo, Tokyo, Japan
Ocean Research Institute, The University of Tokyo, Tokyo, Japan
Ocean Research Institute, The University of Tokyo, Tokyo, Japan
Center for Deep Earth Exploration, Japan Marine Science and Technology Center, Yokohama, Japan
Institute for Geophysics, University of Texas at Austin, Austin, Texas, USA
To investigate variations in physical properties accompanying the development of the décollement, we used a neural network analysis of seismic attributes derived from 3D seismic reflection data gathered in the Nankai Trough convergent margin off the Muroto peninsula of southwest Japan. This analysis resulted in a detailed map of the geological features along the décollement and revealed a drastic change in physical properties at the sole of the proto-thrust. Ocean Drilling Program (ODP) data suggest that the décollement physical property change coincides with the initiation of slip. Furthermore, changes in the structure of the accretionary prism and reorganization of the décollement geometry also attend the initiation of plate boundary slip.
Received 28 October 2004; accepted 18 May 2005; published 21 June 2005.
Citation: (2005), Initiation of plate boundary slip in the Nankai Trough off the Muroto peninsula, southwest Japan, Geophys. Res. Lett., 32, L12306, doi:10.1029/2004GL021861.
Cited By