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This research has been supported by IGN and CSIC, and EC grant VUELCO and the MINECO grant CGL2011-16144-E. AG is grateful for her Juan de la Cierva Grant (JCI-2010-06092).
We analyzed the evolution of volcano-tectonic (VT) seismicity and deformation at three basaltic volcanoes (Kilauea, Mauna Loa, Piton de la Fournaise) during phases of magma accumulation. We observed… Continue Reading
A volcanic edifice exerts a large load at Earth's surface and modifies the stress field at depth. We investigate how this affects upward dyke propagation towards the surface. For given edifice… Continue Reading
 The construction of a large volcanic edifice at Earth's surface generates stresses in the upper crust whose magnitude is comparable to those of tectonic stresses and overpressures within a magma… Continue Reading
Abstract Twenty years of continuous Earth observation by satellite SAR have resulted in numerous new insights into active volcanism, including a better understanding of subsurface magma storage and… Continue Reading
Caldera formation has been explained by magma withdrawal from a crustal reservoir, but little is known about the conditions that lead to the critical reservoir pressure for collapse. During an… Continue Reading
SUMMARY We investigate how surface load variations around volcanoes act on shallow magma chambers. Numerical calculations are carried out in axisymmetric geometry for an elliptical chamber embedded… Continue Reading
Calderas are topographic depressions formed by the collapse of a partly drained magma reservoir. At volcanic edifices with calderas, eruptive fissures can circumscribe the outer caldera rim, be… Continue Reading
The behaviour of a magma plumbing system during a cycle of volcanic edifice growth is investigated with a simple physical model. Loading by an edifice at Earth's surface changes stresses in the upper… Continue Reading
We assemble a processing chain that handles InSAR computation from raw data to time series analysis. A large part of the chain (from raw data to geocoded unwrapped interferograms) is based on ROI PAC… Continue Reading