I don't think bedrock close to the surface is generally a good thing with earthquakes. The shocks travel fast and far and tend to have much sharper accelerations.rusticdog wrote:When I saw the magnitude and depth I was a bit worried....highlights how living on good bits of rock really helps
In this area of few quakes, I suspect the aftershock pattern will be different from what you'd expect in earthquake country. I live in California, 5 miles from the San Andreas fault, where it's difficult to tell aftershocks from the general tremor background. Here, nobody notices a 4, and a 5+ does little damage - you have to get into the 6+ range before there's any comment. Except from the news media, who have to turn anything into a story... But in the northern and eastern part of the US where glaciers scraped down to bedrock the little ones are more noticeable. When I lived in Chicago, I was told that the area was classified seismically active, but earthquakes were so rare nobody had ever experienced one. Because of the shallow bedrock, it was expected that even a small quake could do a lot of damage.rusticdog wrote:If the aftershock patterns are the same then it can be expected to have another high 4 to low 5 quake sometime in the next 12 months, with a bunch of 2-3s as well.....not nice especially as it's an area not prone to quakes that are often felt.