Originally posted by Razor84
reply to post by Glinda
As for the "sonic booms", I don't believe I've ever heard one myself, but I can picture where she was going with her description of the noise, and I can picture in my head what it sounded like. If she really does know what a sonic boom sounds like, that noise coming from underground would be terrifying, not to mention in the dead of night. But we shouldn't worry, it's probably just ice melting
Steve Dutch, a geologist at the University of Wisconsin-Green Bay, said the ground beneath them is solid, and that there are no known earthquake fault lines in the area. Dutch said he heard some people worrying that a sinkhole might open up and swallow homes. That can happen in areas where the ground is rich with limestone and other low-density rocks that can be dissolved by water, he said. But the rock below Clintonville is mainly solid granite that's largely impermeable. However, he speculated that water and granite could hold the key to the mystery. Granite has small cracks that water can fill, but if the underground water table falls especially low, water can seep out, leaving gaps that cause the rocks to settle and generate loud noises. "Maybe the very dry winter caused more water to be removed from the water table, either through pumping or natural flow," he said. A seismic station near Clintonville, a town of about 4,600 people about 40 miles west of Green Bay, has recorded unusual ground shaking since Sunday night. Scientists say such activity can be caused by mining and heavy truck traffic, but since there are no mines or major construction in the area, the Wisconsin Geological and Natural History Survey will take a closer look at the data.
Originally posted by 00nunya00
reply to post by TrueAmerican
Two questions about this:
--If it was granite settling hard enough to generate very loud booms heard all the way on the surface, wouldn't there be at least *tiny* seismic activity associated with it?
--If this was granite settling, why has it not happened before in recent history where the winters and/or summers have been much dryer than this year, and why would it happen only on one day (or roundabout) and then stop, only to appear a few days later in a town down the road, again, only for one day? That would have to be a *very* rapid retreat of water to make so many cracks drain at all once over a large area, booming every few hours for a whole day, don't you think?
(PrisonPlanet.com)-Residents 80 miles away report strange earth tremors
Mysterious booms that have rocked the town of Clintonville, Wisconsin have spread to another town 80 miles away. Police in Montello received reports of similar earth tremors at 5:30am this morning.
Originally posted by BeavX
It appears the booms are back...
Some claim they are even louder.
Here's the latest:
Booms are back in Clintonville