Last Update 04/25 2018
Research: Through numerical simulations using laboratory-derived friction laws, I investigate the mechanical process of seismic and aseismic sliding process on plate boundaries to understand the variation of seismic coupling, crustal deformation, and seismicity. Specific research interests are as follows: (1) Development of constitutive friction laws. (2) Effects of stresses due to aseismic sliding on seismic activity. (3) Aseismic sliding preceding earthquakes. (4) Effects of fault interaction on seismic cycles. Publications: N. Kato, and T. E. Tullis, A composite rate- and state-dependent law for rock friction, Geophys. Res. Lett., 28, 1103--1106, 2001. N. Kato, A possible model for large preseismic slip on a deeper extension of a seismic rupture plane, Earth Planet. Sci. Lett., 216, 1/2, 17--25, 2003. Kato, N., Interaction of slip on asperities: Numerical simulation of seismic cycles on a two-dimensional planar fault with nonuniform frictional property, J. Geophys. Res., 109, B12306, doi:10.1029/2004JB003001, , 2004. Kato, N., How frictional properties lead to either rupture front focusing or cracklike behavior, Bull. Seism. Soc. Am., 97, 6, 2182--2189, 2007. Kato, N., Numerical simulation of recurrence of asperity rupture in the Sanriku region, northeastern Japan, J. Geophys. Res., 133, B06302, doi:10.1029/2007JB005515, , 2008. Kato, N. and S. Yoshida, A shallow strong patch model for the 2011 great Tohoku-oki earthquake: A numerical simulation, Geophys. Res. Lett., 38, L00G04, doi:10.1029/2011GL048565, , 2011. Kato, N., Dependence of earthquake stress drop on critical slip-weakening distance, J. Geophys. Res., 117, B01301, doi:10.1029/2011JB008359, , 2012. Kato, N., Fracture energies at the rupture nucleation points of large interplate earthquakes, Earth Planet. Sci. Lett., 353-354, 190--197, 2012. Kato, N., Deterministic chaos in a simulated sequence of slip events on a single isolated asperity, Geophys. J. Int., 198, 2, 727--736, 2014. |
