Turkish seismologist warns of an earthquake of up to 7.6 Richter in Istanbul
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"
Earthquake: Constantinople faces 43.6% probability of Magnitude 6.5 Richter, reports Houliaras
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
Earthquake 4,9 Richter in Dardanelles: Fears a major earthquake in Constantinople, seismologists say
Turkey worries for an earthquake greater than 7 Richter - These small tremors "gradually break the faults and lead to major earthquakes"