MultiVosS (Multiparameter Volcano Surveillance in South-Central Chile: the Near-Realtime Approach) Project: A multiparameter survey of the two permamantly active volcanoes Villarica and Llaima (Chile) is planned using a combination of permanent gas flux measuremets by Mini-DOAS, continuous seismic acquisition, gas geochemistry and periodic InSAR deformation measurements. These two volcanoes show contrasting behaviour, each being typical for several quiescently degassing volcanoes worldwide. Villarica is an open vent system with an intermittent lava lake showing only little or no deformation. Llaima has no open vent between volcanic eruptions, but encompasses moderate fumarolic activity. Deformation rates are high, showing inflation probably caused by shallow magma accumulation. The short period seismometers of the GIPP will be installed on Llaima volcano for 18 months in order to compare the seismo-volcanic activity of Llaima with Villarrica where volcanic seismicity is being measured as part of the VIVA project.