Free-DC
04-24-2010, 11:08 PM
A rare midwestern US earthquake was detected by a QCN participant in Illinois. The quake was of magnitude 3.8 and was 45 miles northwest of Chicago, Illinois. The quake was only one of three detected in the upper Midwest in the past 21 years. The QCN participant was using an external JoyWarrior USB sensor - you can see the plot of the QCN-detected quake activity here.
More... (http://qcn-web.stanford.edu/download/illinois.png)
More... (http://qcn-web.stanford.edu/download/illinois.png)