Magnitude 7.2 earthquake occurred on November 12, 1999. Maximum intensity IX (Violent) with 147.80%g ground acceleration. Surface rupture extended 40 km along Düzce Fault. Maximum lateral displacement 5 m, average 3 m
7.8 magnitude earthquake and aftershocks occurred on February 6. Two ruptures stretched for hundreds of kilometres. Land moved up to 7 metres in opposite directions. Main rupture caused displacements up to 5 metres