1. Istituto Nazionale di Geofisica e Vulcanologia (INGV); Roma Italy
2. Department of Geology and Center for Geohazards Studies; University at Buffalo; Buffalo NY USA
3. Geology Department; University of Otago; Dunedin New Zealand
4. Institut national de la recherche scientifique (INRS); centre Eau Terre Environnement (ETE); Québec QC Canada