HELIOGEOMAGNETIC ACTIVITY AND EXTREME SITUATIONS IN THE ZONE OF POLAR-CAP

It was found that, the frequency of extreme situations (traumas, death s, sudden diseases) in miners working in Spitsbergen mines (74 degree N) correlates: well with heliogeomagnetic activity (local magnetic dis turbances, solar proton flashes). It was shown that in winter, both an enhanced and an extremely Low level of magnetic activity can affect t he occurrence of extreme situations. The results obtained can be used for predicting and reducing the frequency of extremal events in the zo ne of the polar cap during geomagnetic disturbances.