3 ms·
I'm a postdoc in fault mechanics and earthquake physics. I can say that while the narrative does jump around a bit, the geologic content is fairly solid; cosei
by cossatot 13y ago
I'm a postdoc in fault mechanics and earthquake physics. I can say that while the narrative does jump around a bit, the geologic content is fairly solid; coseismic stress changes on faults really do cause substantial changes to the stress state on faults around them, and this can lead to earthquake clusters or sequences (please don't say 'storms').
This is especially clear for strike slip faults (San Andreas, N. Anatolian Fault, Xianshiuhe Fault, etc.), for a couple of reasons:
1) Because the displacement is in the direction of neighboring fault segments that are capable of earthquakes, the stress changes on those neighboring segments are large. On subduction zones and mid-ocean ridges (the other major plate boundary types), the major stress changes are deeper in the earth, where it is hotter and faults deform through ductile shear instead of brittle, seismic slip, so earthquakes don't really occur there.
2): Major, rapidly slipping strike-slip faults are more likely to be found on land than other types of rapidly-slipping faults, so we have a much better record of this process occurring on them. It's a lot harder to find pre-historical/geologic records of earthquakes that occurred under the sea. Tsunami deposits are good, and in the past 10 years study has ramped up looking for them.
Now, I have no idea whether such a sequence wiped out classical Hellenic civilization. I believe (but can't check right now as dinner is ready...) that I have read a paper on a major eruption at Santorini devastating Minoan society.