Good morning.
It’s a sunny day for Whitewater today, with a high temperature of seventy-nine.
There are Milwaukee residents who claim to have felt the recent earthquake from Virginia. (No word on whether they also have super-sensitive, dog-like hearing.) Wired Science, publishing a story from Ars Technica, explains Why the East Coast Earthquake Was Felt So far Away:
It comes down to a difference in crust. Density and temperature are primary controls on how far seismic waves can propagate through rock before dissipating. On the East Coast, the continental crust is older, colder and denser….
Contrast that with the West Coast, which is still tectonically active today, from the San Andreas Fault in Southern California to the subduction zone in the Pacific Northwest….
Because of these differences, shaking can be transmitted much farther (about three times the distance) through the colder, denser eastern crust.
