GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.3 GNGTS 2023 Fig. 1. Comparison between the temporal evolution of the first principal component resulting from a PCA analysis performed on trend changes of the GNSS data (blue) and of the Po river level (orange). Trend changes of both GNSS and Po river level data are computed using a regularization model based on L1-norm. Fig. 2. Map of the vertical displacements associated with the PC1 during the time interval 01/01/2021 - 02/09/2022.