> However, from an operational point of view, I have found that the > probability of earthquake occurrence is directly related to how broken > or inoperable the seismic instrumentation to record it is. Yes, this correlation is quite high in my experience as well. In fact I believe that the high concentration of properly functioning seismic recording devices in the San Francisco Bay Area is providing an extremely under-appreciated protective effect against a large quake occuring anywhere in the area. (Hey, it worked for Parkfield.) Yet another reason to continue (and, I say, increase!) funding for seismic research. Much cheaper than retrofitting all those bridges and buildings. Regards, Ted __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>