The Idrija earthquake of March 26, 1511 —a reconstruction of some seismological parameters

Two earthquakes of March 26, 1511 with different positions of foci represent some of the strongest seismic phenomena which occurred in the past in the central part of Europe. In particular, both events were the beginning of an increasing seismic activity in this part of Europe, which was some centuries later again evidenced in a series of strong earthquakes in Friuli.Some characteristics of these shocks and the following aftershocks series show a pattern which is very similar to that of the Friuli earthquakes of 1976. However, the extent of the damage caused by the earthquakes in 1511 and the dimensions of the pleistoseistic region itself provide a basis for determination of some basic and only qualitative data about these shocks.