C.A. Brunori, F. Quattrocchi, E. Boschi, F. Buongiorno, M. Calcara, F. Doumaz, M. Guerra, G. Mele, P. Montone, L. Pizzino, F. Quattrocchi, S. Salvi (Istituto Nazionale di Geofisica, Rome, Italy)

S. Lombardi, F. Zampetti (Universita' di Roma "La Sapienza", Rome, Italy)

R. Funicello, F. Salvini, A. Billi (Universita' "Roma III", Rome, Italy)

M. Angelone (Laboratorio ENEA AMB-TEIN-CHIM)

M. Zuppi (Universita' di Torino, Italy)

B. Marty (CNRS Nancy, France)

The Geochemical Seismic Zonation Project (EC contract ENV4-CT96-0291) is carried out by a multidisciplinary integration of different data sets. The main goal of the project is to assess the contribution of fluid geochemistry to the Seismic Hazard Assessment (SHA), i.e. the recognizing of active faults in different geological environments. The Gargano test site (Central Italy) has been the first area studied up to date: four geochemical surveys were performed with the main task to differentiate either active and non-active fault systems. Structural geology new data set relative to a few fault segments selected over the Gargano area has been collected, on meso scale, in correlation with satellite images. Geochemical time series of two selected sites are cross - correlated with present seismicity. The management of the different data sets is being performed by GIS techniques (ARC/Info software-ESRI Inc.). The GIS structure, allows a very fast storage, update and analysis of the different data sets.