Observation of the Dynamics of Hydrothermal Activity in La Soufrière of Guadeloupe Volcano with Joint Muography, Gravimetry, Electrical Resistivity Tomography, Seismic and Temperature Monitoring

Muography uses muons contained in the natural cosmic rays to determine density of rock volumes. The measurements consist counting emerging from target screening effect produced by rock. Since larger thickness, smaller number able cross, time resolution that can be achieved muography monitor changes is on order one or two weeks for kilometer-sized volcanoes. This limitation method reduced joining with high time-resolution like passive seismic monitoring. In case structural imaging, benefits fact muon trajectories are linear, making tomography problem simpler than other geophysical techniques electrical resistivity tomography. Experiments performed La Soufrière Guadeloupe volcano described show how used contribute imaging a highly heterogeneous lava dome and detect abrupt transient hydrothermal phenomena likely produce dangerous explosive events.