[Skywise]

(07-07-2019, 05:56 PM)PennyB Wrote: Hi guys:  Just noting that the aftershock sequence is now edging into the area of the Garlock Fault.  Might be worth watching?

Penny

I've noticed that too.

Although it's fair to categorize this as a post-diction, I noticed that the aftershocks of the original 6.4 were quite vigorous, with many of the larger aftershocks clustered on the north end of the NW-SE trend. This is where the eventual 7.1 broke.

And now I note that there is a cluster of aftershocks further north again. This is approaching the Owens Valley fault zone. However, it's likely not been long enough since the 1872 Lone Pine quake.

Also of note is what appears to be another SW-NE lineament of aftershocks north of the original SW-NE break from the 6.4 quake. This line on the east has a cluster on the Ash Hills fault.

And of course, as Penny has noted, the 7.1 seems to have broken southward up to the Garlock Fault.

Ross Stein and his group had posted on their temblor.net site a map of the coulomb stress distribution of the 6.4 quake (which I happened to be looking at when the 7.1 hit). Not surprising that the 7.1 occurred in one of the stress lobes.

http://temblor.net/earthquake-insights/s...ures-8976/

The article shows how the past Lone Pine and the more recent Landers earthquakes likely influenced the 6.4 event with the stress distributions.

There is also an article on the 7.1, where they discuss the fault also rupturing to the south.

http://temblor.net/earthquake-insights/m...ater-9041/

Furthermore, there is discussion of the wider implications of this quake series, which has a stress map indicating at least 2 bars of additional stress on the Garlock Fault.

http://temblor.net/earthquake-insights/m...next-9055/

Overall, I think it's worth being prepared. We've been in a 'quake drought' for the past 20 years. Things may be lighting up in the future.

Life has had me busy for the past several years. Lots of changes for me as well. I'm a little behind on my quake studies. Need to read up on these events and faults.

Brian