Monitoring of mechanical stability of arboreal individuals by GNSS low-cost sensors

In order to prevent trees falling phenomena, a constant improvement of the knowledge of relations between trees and meteorological events (trees-wind in particular) is crucial. The case study reported here refers to an experimental analysis carried out on an individual of Italian stone pine (Pinus pinea L.). The analysis was carried out by applying a low-cost GNSS receiver at the top of the tree and evaluating the results obtained in term of velocities, positions and frequencies; the next step was to correlate the values obtained with those measured by a sonic anemometer.