The temblor happened at 12:49 p.m. Eastern European time about 25 miles southwest of Istanbul, data from the ... to update the shake-severity map. An aftershock is usually a smaller earthquake ...

In 2001, Dogan Kalafat, the late accomplished earthquake researcher of Istanbul's Kandilli Observatory's Earthquake-Tsunami Monitoring Center, measured the threat of a 7.0+ magnitude earthquake ...

Thus none of the quakes amounted to the long-feared 'Big One', expected to one day occur on the Prince Islands fault line in the offshore waters of the Asian side of Istanbul. Map: The earthquakes ...