Special field workshop at Vulcano (Aeolian Islands) during summer 1988: geochemical results

Chemical data of fumarolic gases collected at Vulcano during summer 1988 are presented. Simultaneous important variations in the chemical composition of fluids were recorded in the six fumaroles under study; increases in emergence temperature were, on the other hand, not comparable in all the fumaroles. These variations can be related to an input of a deep component of probable magmatic origin. The correlation between changes in the chemical composition of crater fluids and in seismic activity localized at the crater suggests both phenomena have a common origin.