Objectif The aim of this project is to provide a methodology forreconstructing the physical characteristics of an eruption fromthe ejected fragments. This approach can provide a means forassessing the past and potential eruptive behaviour of diversetypes of volcano to be found in the EEC countries.The work will be carried out in the following steps:Fieldwork to collect ejecta from eruptions with different magmacompositions from different volcanoes (Santorini, GR; Teide, S;Laacher See, D; Vesuvius, I).Density determinations and image analysis from two-dimensionalsections will be carried out to characterize the bubble contentand geometry.Fourier Transform Infra-Red Spectroscopy on glassy samples,scanning calorimetry and dilatometry measurements will be carriedout to study the kinetics of gas exsolution and to reconstructtheir temperature -time paths-.Laboratory experiments on the extrusion of foams and thefragmentation of liquids will be carried and theoretical modelsdeveloped to elucidate the basic physical mechanisms involved infragmentation.These models will be tested using the geological data. Champ scientifique natural sciencesearth and related environmental sciencesgeologyvolcanologynatural sciencesphysical sciencesopticsspectroscopyabsorption spectroscopynatural scienceschemical sciencesanalytical chemistrycalorimetrynatural sciencesmathematicspure mathematicsgeometry Programme(s) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Thème(s) 04 - Technological and natural risks Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur Institut de Physique du Globe de Paris Contribution de l’UE Aucune donnée Adresse 4 place Jussieu 75252 Paris France Voir sur la carte Coût total Aucune donnée Participants (2) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire UNIVERSITAET BAYREUTH Allemagne Contribution de l’UE Aucune donnée Adresse Universitätsstraße 30 95440 BAYREUTH Voir sur la carte Coût total Aucune donnée University of Bristol Royaume-Uni Contribution de l’UE Aucune donnée Adresse Queens' Road BS8 1RJ Bristol Voir sur la carte Coût total Aucune donnée