Stima dell’umidità del suolo da dati EO a supporto del monitoraggio del rischio da frana

Landslides can be triggered by different meteorological and geophysical events. Among meteo
events, there are strong rain precipitations and fast snow melting. As far as geophysical events are
concerned, there are earthquakes and volcanic eruptions. In all cases, slope hydraulic conditions and
level saturation are important elements in the landslides triggering, in particular for superficial
landslides. Though an easy relationship between water contain in the most superficial layer of the
soil and the hydraulic condition of the slope doesn’t exist, knowledge of the humidity conditions of
the land surface are important in the landslide phenomena studies and in particular to their hazard.
In the framework of MORFEO project, financed by the Italian Space Agency (ASI), it is underway
an experimentation and an evaluation of new techniques of soil moisture retrieval based on EO data.