A big earthquake happens every 6 to 10 years says Naci Görür and stresses that "if the wheels of the economy stop in Istanbul, Turkey will collapse on its knees"
seismologist
The recent 4.9 magnitude earthquake in the Dardanelles has led some scientists to believe that it is a precursor to a very large earthquake in Constantinople
Scientists are troubled and concerned about the frequency
Three distinct kinds of sounds can be heard
Experts say aftershocks an expected phenomenon