Mount Teide, Tenerife, Spain
Location and setting: Central Volcanic Complex, Tenerife (Canary Islands), intra-plate ocean volcanic island
Background information: The Teide-Pico Viejo volcanic complex is located in Tenerife, the largest (2058 km2) and highest (3718 m) island of the Canarian archipelago. The geological evolution of Tenerife involves the construction of two main volcanic complexes: a basaltic shield complex (~12 Ma to present) and, a central complex (~4 Ma to present). Post-shield volcanism, the central complex, comprises the Cañadas edifice (~4 Ma–0.18 Ma), a composite volcano characterised by abundant explosive eruptions of highly evolved phonolitic magmas, the Cañadas caldera that truncated the construction of the Cañadas edifice, and the active Teide–Pico Viejo stratovolcanoes (0.18 Ma to present) built up inside the Cañadas caldera.
Its most recent activity (Holocene) has been characterized by effusive eruptions of basaltic to phonolitic magmas and also by explosive events including Plinian and sub-Plinian eruptions of phonolitic magmas. Unrest since 2004 of the Central Volcanic complex might be indicative of the reawakening of Teide volcano.
Relevance to project: Type volcano regarding long (hundreds to thousand years) repose periods; Teide volcano is potentially a serious hazard to local populations and several millions of visitors each year; major potential impact on local communities and economy of the region; challenging volcano forecast due to the lack of data on previous unrest episodes; lack of protocols for crisis communications, hazard assessment and forecasting.
Monitoring data available to consortium: 2000-present. Seismic records (short band and broadband); 2005-present. Daily reports of activity and events; 2008-present. Hydrogeochemical sampling and analysis of waters from tunnels around the volcano (about 4 times a year); 2004-2006. Campaign-style GPS and gravity data.