The auroral events observed from Croatia and a part of surrounding countries

Abstract

Descriptions of 37 auroral (or polar light) events were analyzed that were published mostly since the middle of the 18th century up to present days and observed within latitudes from 42° to 45.5°N and longitudes 13° to 19°E (mainly on the territory of Republic of Croatia). The list of auroral events includes date, place and source of information and, for the most cases, visually observed parameters such as: color, shape, distribution on the sky and time duration of the phenomenon. Basic statistical results allowed the conclusions about the most frequent occurrence of a particular parameter. The auroral events correlate highly with the solar activity and in mentioned latitudes they correlate also with the secular period of sunspots.