New evidence for the reawakening of Teide volcano

作者: Joachim Gottsmann , L Wooller , J Martí , J Fernández , Antonio G Camacho

DOI: 10.1029/2006GL027523

关键词: VolcanoPhysical geographyGeologyGravity (chemistry)Fluid migrationBaseline dataSpring seasonSeismologySurface deformation

摘要: [1] Geophysical signals accompanying the reactivation of a volcano after period quiescence must be evaluated as potential precursors to impending eruption. Here we report on central volcanic complex Tenerife, Spain, in spring 2004 and present gravity change maps constructed by time-lapse microgravity measurements taken between May July 2005. The changes indicate that recent almost century inactivity was accompanied sub-surface mass addition, yet did not detect widespread surface deformation. We find causative source evolving space time infer fluid migration at depth most likely cause for increase. Our results demonstrate that, even absence previous baseline data ground deformation, early developing crises provide crucial insight into dynamic beneath volcano.

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