We don’t get earthquakes nearly as extreme as this, but we’ve had our own little piece of the west coast here in Connecticut recently.
Dr. Jeffrey Park, Yale University “California you also have the Cascades and you have Alaska…these are the active plate boundaries that can have very large earthquakes up to magnitude 8 in fact.”
Okay we don’t see a magnitude 8 earthquake but believe it or not, we’re sitting on a fault line right here in Connecticut..they’re not dead, they’re just elderly and napping.
Dr. Jeffrey Park, Yale University “Because they’re old faults they’re still weak and if you stress the crust, the crust undergoes some stress…some of that stress gets relieved by small motions on those old faults.”
Amazingly enough, these faults were caused by melted glaciers from thousands of years ago.
Dr. Jeffrey Park, Yale University, “When it retreated, it took this weight off the land, off of coastal Connecticut and ever since the glaciers have been retreating that land has been trying to bulge upward in response to the release of the load.”
So has all of the tension been released after 10 earthquakes in under a week?
Dr. Jeffrey Park, Yale University, “It’s magnitudes 2, 3, there are actually some magnitude 1’s that have been recorded but they’re persistent…there have been several over several days so it’s likely that we’ll have a few more shakes before we’re all done.”