Map of earthquake epicenters in central and southeastern Europe for the period from 342 BC to 1990 AD.
The size of the symbols indicates earthquake magnitude, the color indicates the focal depth: shallow: 0–75 km (red), medium depth: 75–200 km(green). Source: SHEBALIN,N.V., LEYDECKER,G., MOKRUSHINA,N.G., TATEVOSSIAN,R.E., ERTELEVA,O.O. & V.YU.VASSILIEV (1997): Earthquake Catalogue for Central and Southeastern Europe 342 BC - 1990 AD. -- Final Report to Contract ETNU - CT 93 - 0087 (submitted to EU for publication).
Source: BGR