GNSS data provide unexpected insights in hydrogeologic processes.
Devoti R., Riguzzi F.
Relazione su invito
IV - Geofisica e fisica dell'ambiente
GSSI Ex ISEF - Aula D - Mercoledì 25 h 10:00 - 13:00
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The Earth's crust reacts to water circulation basically because of its weight and pressure variations. Water content variations cause time-varying loadings on the Earth surface and cause time-varying deformations of the solid Earth. In certain circumstances the Earth surface deforms elastically but in most cases the surface deformation is determined by the poroelastic property of the ground. We will show a few case studies, based on GNSS time series, observed in the Alps and in the Apennines that demonstrate unknown deformation patterns clearly correlated with groundwater circulation.