Earth-flow deformation from GPS surveys, Mount Pizzuto earth flow, southern Italy

Luigi Guerriero (a), Nestor Cardozo (b) & Paola Revellino (a)
(a) Department of Sciences and Technologies, University of Sannio, Via dei Mulini, 59/a, 82100, Benevento, Italy. E-mail: luigi.guerriero@unisannio.it (b) Department of Petroleum Engineering, University of Stavanger, 4036 Stavanger, Norway

We reconstruct the deformational pattern of the Mount Pizzuto earth flow using displacement data derived by successive GPS measurements of a network of 99 monitoring points. 2D strain was computed using displacement data of sets of 4 to 6 points. Results from our analysis indicate that deformation varies along the earth flow with several zones of longitudinal stretching and shortening corresponding to areas where the earth-flow displacement/velocity increase and decrease, respectively. Dilatation and orientation of principal strain axes are consistent with the geometry of deformational structures at the flow surface

earth flow, movement, strain, deformation, structures