Hey....these 2 quakes are timely for me: I just finished a full draft of a proposal to USGS/NEHRP to study the blind (buried) fault beneath Palos Verdes anticlinorium, which is much bigger than just the onshore part ...its SW flank is 45 km long without a bend, and the overall complex high is 60 km or so.....the quakes are near the tip of the fault I/we are representing (just finished interpreting these 2 weeks ago and just have to turn them into 3D digital depth and give them to the Community fault model. But, the earthquakes, if correctly located, were not on that structure...if the are strike-slip they could have been on the San Pedro Basin fault....a right-lateral strike-slip fault...it is active...although you might not have heard of it. Or, there is a lot of seismicity there over the years, including a M5 in 1979 and a M5 in 1989...the latter was the source of 22 straight earthquake jokes by John Carson in his monologue...most of these quakes are on a deeper system...which shows up on the seismic reflection mainly as the faults active before 5 million years ago...extensional faults.....that now have been reactivated....I think it is a big mush down there with faults all over the place....hard to represent....

Oh, yeah, I'm waiting to hear about a manuscript that includes a little on the San Pedro Basin fault that I submitted to JGR 3 months ago....by coincidence, wife in suburbia submitted the same day and had already heard that hers should be accepted with some modifications.
(NS, and KB in oilpatch, and MK, and a couple USGS people are involved in different parts of this work...
Chris

Oh, yeah...if you really have that sort of motion at your Condo, Mary, a geologist better get over there....but it would have to be coherent right-lateral motion. You are more likely to have problems that are not directly related to a fault....maybe the ground subsiding or compacting. The Newport Inglewood only has about 1 mm/yr right-lateral long-term. So, please describe the motion you are seeing in a lot of detail.....is it cracks opening, or is it the same kind of motion as the San Andreas fault.

Better, after you describe it, get Don down there to take a look...he lives in Hollister, where the Calaveras fault is creeping at several (more?) mm/yr and offsetting everything......I would be surprised if he has not seen this...I have...
Chris