OUR FIELDS Fragile srl - Our Fields - LANDSLIDING


In all mountain ranges, but also in artificial embankments or mining areas, gravitational slope movements (landsliding) are common landscape-shaping agents, possible natural hazards or engineering geological problems.

Due to various geomorphological settings, bedrock lithologies and meteorological forcing, different types of landslide phenomena may develop in the diverse environments. Soley based on their velocity, landslide phenomena may span several order of magnitude (few cm/year to m/s).

Some of them are periodic recurring phenomena whereas others are first-time failures. For example, deep-seated landslides, rock falls and debris flows are frequent in the alpine environment, where bedrock lithology is tipically resistant and mountain relief is steep, whereas slow moving landslides, earth-flows and shallow landsliding are common in mountain chains where bedrock is weaker and the relief is more gentle.

In all mountainous environments, landslides are a natural landscape-shaping agent whose recognition, comprehension and monitoring may contribute to significantly reduce the associated risk.

Slow moving landslides together with pre- and post-failure deformations are well suited to be analyzed with space born radar interferometry. Many of these landslides are subject to movements that are not directly observable and can only be detected using appropriate measurement tools. Among them, InSAR measurement techniques developed by Fragile can cover wide areas, span several years and offer an areal perspective useful to map and interpret the processes. Periodic rainfall-induced accelerations can be measured and catastrophic failures anticipated potentially preventing severe damages to man-made structures.

Fragile Srl offers to costumers InSAR analyses by combining the most effective processing strategies and techniques. In particular, multi-temporal InSAR (MT-SBA) analysisis mostly useful to measure displacements on on affected structures, settlements and roads.

Traditional InSAR (RAINS) allows instead areal investigations that are particularly useful to detect the deformation pattern and interpret the possible kinematics. RAINS, in fact, proves effective in diverse geomorphological contexts including vegetated areas.

Traditional InSAR (RAINS) analyses supplied by Fragile Srl particularly suited in this case to obtain deformation patterns that precede the catastrophic failure and might help to monitor the evolution of the stable areas around the failure.

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