Campi Flegrei, Stanford: bradyseism, it's not magma, but water

Have you ever seen when boiling water in a pressure cooker pushes against the lid, making it vibrate? Well, imagine the same thing, but under your feet, on a gigantic scale. According to Tiziana Vanorio, a geophysicist from Pozzuoli and professor at Stanford University, this is exactly what is happening in the context of the bradyseism that is affecting the Campi Flegrei, in Campania. Not magma rises, as has always been believed, but a colossal …