USEReST 2008 proceedings of the 2008 Second workshop on Use of Remote Sensing Techniques for Monitoring Volcanoes and Seismogenic Areas : Naples, Italy, November 11-14, 2008 / organized by Institute for Electromagnetic Sensing of Environment (IREA), National Research Council (CNR), Istituto Nazionale di Geofiscica e Vulcanologia (INGV), Osservatorio Vesuviano (OV). (IEEE, 2008)