RESUMO
During a period of about two years chemical composition of the gases of some mud volcanoes named "salinelle" in eastern Sicily were monthly analysed. These gaseous manifestations are situated in an high seismic risk area which underwent some of the most destructive earthquakes in Italy. Significant variations in the gas composition of these manifestations could be related to two earthquakes which occurred in this area during the period of observations.(AU)
Assuntos
Erupções Vulcânicas , Gases , Itália , Medição de Risco , TerremotosRESUMO
The results of the investigations show interesting correlations between gases in the soils and in the waters (CO2-Rn) and changes in the chemical composition of the natural gas exhalations (He, CH4) probably related to the earthquake. The geochemical surveys allowed us to define the most interesting areas for seismic monitoring aimed at earthquake prediction.(AU)
