GlobVolcano Project Overview S. Borgstrm INGV - Osservatorio Vesuviano Naples, Italy Frank.Martin.Seifert Science, Application and Future Technologies Department ESA/ESRIN Frascati, Italy L. Tampellini and R. Ratti Application department Carlo Gavazzi Space S.p.A. Milan, Italy Abstract The GlobVolcano project is part of the ESA DUE programme. The project aims at demonstrating EO-based services to support the Volcanological Observatories and other mandate users (e.g. Civil Protection authorities, scientific communities of volcanoes) in their monitoring activities. During the project a worldwide selection of user organizations will cooperate with the GlobVolcano team in order to harmonize users requirements and to evaluate the EO-based services . The Osservatorio Vesuviano of Naples (INGV-Italy) coordinates the communications between the project and the User Community. IPGP of Paris is responsible for the scientific coordination and the validation activities. The project activities are split in two phases. During the first phase (completed in June 2008) the service infrastructure and interface to the users have been developed. Prototype EO-based information products have been generated and validated. Service provision on pre-operational basis will take place during the second phase. Keywords-component; Volcano, Earth Observation, Information Service I. INTRODUCTION The objective of the GlobVolcano project is to define, implement and validate an EO (Earth Observation) based information system able to support the activities of volcanic observatories, civil protection agencies and the broader scientific community of volcanoes with validated EO products. The four EO based information services, each one related to the different responsibility areas of the institutions engaged in volcano surveillance, are: • Deformation Mapping (DM) • Surface Thermal Anomalies (STA) • Volcanic Gas Emission (SO 2 ) • Volcanic Ash Tracking (ASH) The GlobVolcano Information System consists of two main elements: • The GlobVolcano Data Processing System includes the set of EO data processing subsystems. The processing subsystems are located at each respective service center. • The GlobVolcano Information Service is the provision infrastructure, i.e. the interface to the end users. The GlobVolcano Information System was defined following a modular approach in order to identify for each user organization one or more information services suitable for its volcano(es) of interest. During the first phase of the project, the information system architecture was developed and assessed in close cooperation with the user organizations. The second phase of the project will concern service provision and products delivery. User Organizations will integrate GlobVolcano products in their working environment and provide GlobVolcano team with an evaluation about the usefulness of the EO products in their daily practice. II. GLOBVOLCANO DATA PROCESSING SYSTEM The GlobVolcano Data Processing System is devoted to EO data processing and GlobVolcano products generation. It consists of seven data processing sub-systems based on existing and mature processing techniques. A. Defornation Mapping Service The Deformation Mapping Service is useful in order to analyze and understand the geophysical mechanisms governing the volcanic system and its dynamic characteristics. Two different processing approaches are adopted in order to provide both global and detailed monitoring of the area of interest: Conventional DInSAR (Differential Synthetic Aperture Radar Interferometry) and PSInSAR TM (Permanent Scatterers Synthetic Aperture Radar Interferometry). Both processing approaches exploit Envisat ASAR data in order to generate GlobVolcano products. The use of Conventional DInSAR approach allows increasing temporal resolution of deformation mapping products when the alert level increase by exploiting capability of ASAR sensor to image an area with different geometry. The GlobVolcano project is funded by ESA as part of ESA DUE programme. 1-4244-2547-1/08/$20.00 ©2008 IEEE