  We develop a chiral SU(3) RMF model for octet baryons, as an extension of the
recently developed chiral SU(2) RMF model with logarithmic sigma potential. For
Sigma-meson coupling, strong repulsion(SR) and weak repulsion(WR) cases are
examined in existing atomic shift data of Sigma^-. In both of these cases, we
need an attractive pocket of a few MeV depth around nuclear surface.
