HCW | Earthquakes
Most Hoosiers have no idea that Indiana has an active seismic region within the state. The Wabash Valley Seismic Zone centers on the Wabash River along the Indiana-Illinois border from Terre Haute to Kentucky. Geologist believe this heartland fault has the ability to produce earthquakes with a magnitude of 7.0 on the Richter Scale.
Indiana also falls within reach of seismic activity from the increasingly active New Madrid Fault centered between Memphis, TN and Paducah, KY.
Between 150 and 200 earthquakes are recorded annually by a network of monitoring instruments, although most are too small to be felt by people. Geologic evidence for prehistoric earthquakes throughout the region has been mounting since the late 1970s.
DePauw University | Greencastle, IN
The seismograph, Model EQ-1 (Next Generation Science), is located in a second-floor classroom of the Julian Science and Mathematics Center. The unit is a horizontal beam seismograph that is designed to continuously record vertical changes in ground movement. The seismogram below is refreshed once every five minutes.
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