[PennyB]

Sad to see so much damage.  Is this a classic 'Earthquake Storm'??

[Island Chris]

I've not heard of an "earthquake storm". But, sure, it is an active period for this area. And presumably one quake is changing the stress field enough to advance the next one (the quakes may be triggered). I assume people are doing the analysis and the stress maps exist on line.
Chris

[PennyB]

(10-31-2016, 12:07 PM)Island Chris Wrote: I've not heard of an "earthquake storm". But, sure, it is an active period for this area. And presumably one quake is changing the stress field enough to advance the next one (the quakes may be triggered). I assume people are doing the analysis and the stress maps exist on line.
Chris

Essentially correct.  The idea of an "earthquake storm" has been kicked around for a while.  I have read about some people speculating that a similar "storm" over a period of several years contributed to the fall of Bronze Age civilizations.  It would make some sense that stress changes could cause more quakes.

[Skywise]

Ross Stein has done work on stress mapping, even has software available.

https://profile.usgs.gov/rstein

Following a link from the above brought me to:

http://temblor.net/earthquake-insights/

which has two articles on the Italy quakes, stress maps included.

Italy Earthquakes: Second damaging shock rips north from Amatrice

Italy Earthquakes after today’s M=6.6: What’s next?

There are more posts on the previous Italy quakes further down the page.

Brian

[Island Chris]

Thanks Brian

I read the Ross Stein posts; interesting. Ross used to be USGS. I'll have to check what his group Temblor is, and whether he had to retire from USGS to start something like that.
Chris