Relative velocity changes measured at the Piton de la Fournaise (La Réunion) from January 2006 to June 2007. Variations measured for the station pair bor-fer located in the central part of the volcanic edifice are presented in (A). Grey areas represent periods of eruption, the vertical dotted dark grey line in delimits a major collapse of the main crater (Dolomieu crater) which occured during the April 2007 eruption. Regionalization of temporal changes are shown in (B)-(G). The period taken for regionalisation maps are specified with the arrows and the corresponding letters. |