Ruinon landslide (Valfurva, Italy) activity in relation to rainfall by means of GBInSAR monitoring

The active Ruinon rockslide is located on the left bank of the Frodolfo River v alley (Valfurva, Italian Alps) and is developed on the Confinale deep-seated gravitational slope deformation. Ruinon landslide is a major hazard f or v alley inhabitants in that rapid movement might dam the stream and create a debris f low. The landslide is strongly controlled by preexisting structural features and is believ ed to hav e been triggered by postglacial debuttressing. Ground-based radar interferometry has been used to map surf ace deformation over time of the entire unstable zone of Ruinon landslide with high spatial resolution and at a very high temporal acquisition rate (about f iv e images per hour). The activity of the landslide shows strong periodicity , with summer and autumn accelerations and winter deceleration. From a correlation between the landslide acceleration and a class of rainfall event, we deduce the specific rainfall conditions that accelerate the instability of the landslide area. The study results suggest an improved tool f or early warning of events of potentially catastrophic landslide instability .

DEL VENTISETTE Chiara;  CASAGLI Nicola;  FORTUNY GUASCH Joaquim;  TARCHI Dario; 

2013-01-08

SPRINGER HEIDELBERG

JRC68000

1612-510X,   

http://link.springer.com/article/10.1007%2Fs10346-011-0307-3,    https://publications.jrc.ec.europa.eu/repository/handle/JRC68000,   

10.1007/s10346-011-0307-3,