Tsunamis within the eastern Santa Barbara Channel

Several locally generated tsunamis have been reported in Southern Californi a during the past 200 years, yet the hazard from locally generated tsunamis has received considerably little attention. We consider here tsunamis gene rated by coseismic displacements on the Channel Islands Thrust (CIT) system , as well as waves generated by slope failures along the walls of the Santa Barbara Channel. We find that purely tectonic sources could generate regio nal tsunamis with approximate to 2m runup, whereas combinations of tectonic sources and submarine mass movements could generate local runup as large a s approximate to 15m.