Canie-you answered my question. If there are earthquakes in an area that I studied I will try and tell what I know. For example, there was just a M3.4 north of Santa Barbara island. This is near the Santa Cruz-Catalina Ridge strand of the San Clemente fault. Mark Legg has done a lot of work on the San Clemente fault-has published on it, and now has mapped it with Chris Goldfinger. Offset seafloor features, show tens of km (40? 60?) of right-lateral slip on this-with some of these features likely forming between 15 and 20 million years ago. GPS data show several mm/yr of right-lateral slip between Palos Verdes and Catalina and San Clemente Islands today. There was a M~~6 or a little smaller right-lateral earthquake near or north of Today's.....with an elongate aftershock zone along the fault......

The whole fault system extends into Mexican waters, so is 100s of km long. If the whole system could fire off in one shot, like Landers, the Magnitude would be in the high 7s. The question is how much damage such an offshore earthquake would do to Los Angeles/Long Beach. But, Legg points out that this fault is the same distance from LA as is the San Andreas....The other question is whether it would trigger underwater landslides and tsunamis.........
There, did I do good, Canie?
Chris