Application of the nuclear analytical chemistry (NAC) methods in seismological researches of mud volcanoes and springs in the Black Sea zone

For research of an opportunity forecasting of earthquakes and eruptions of mud volcanoes, monitoring of ²²²Rn, (and) ²²⁶Ra in the springs and gryphones of the mud volcanoes and ²²²Rn, ²²⁰Rn in the soil in the Taman Peninsula occasionally were carried out since 1995. Simultaneous measurements in two springs of the Western Caucasus and in the thermal spring of Southwest Turkey ²²²Rn were started also. Simultaneous changes of ²²²Rn concentration in water in Southwest Turkey and South Russia before regional earthquakes were obtained. Reduction of soil ²²²Rn concentration in territory of mud volcanoes before occurrence of new gryphon was observed. (author)