M7.3 Nepal - yes, another one
#13
Hi Brian,

while I would like Kathy to filter the information she supplies more, I think there is at least a minor influence of Great quakes (and maybe high-end Major quake) at great distances. For example, seismic waves from Denali in Alaska I think is known to have triggered small quakes in the continental USA. Great quakes, and especially M9 quakes, ring the earth like a bell (free earth oscillations). I suppose the effect of this for triggering is extremely weak or nil. It has been a long time since I looked at this, but I recall there that there were two M8+quakes on the same day in 1905 (?). Yes, I know, statistics of small numbers.

With work by Roger, about a decade ago we looked into whether there is triggering at certain angular distances. The answer seemed to be "no" although there was something that I recall stood out a little bit at something like 103 (?) degrees. This investigation was related to Lowell Whiteside's Ph.D thesis.

Chris




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Messages In This Thread
M7.3 Nepal - yes, another one - by Skywise - 05-12-2015, 09:02 AM
context to global activity? - by Island Chris - 05-12-2015, 12:42 PM
RE: M7.3 Nepal - yes, another one - by Skywise - 05-12-2015, 07:47 PM
RE: M7.3 Nepal - yes, another one - by Island Chris - 05-12-2015, 09:04 PM
RE: M7.3 Nepal - yes, another one - by Skywise - 05-12-2015, 09:27 PM
RE: M7.3 Nepal - yes, another one - by Skywise - 05-14-2015, 03:35 AM

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