RINA - Démonstrateur d’utilisation de l’intelligence artificielle pour la gestion opérationnelle des risques naturels gravitaires géologiques

14 CHAPTER 1. RÉUNION ROCKFALL DATA ANALYSIS Figure 1.6: At top, Daily time series (on left) for the number of rockfall and for quantity of rainfall (on right). In the middle, sample auto-correlation with significance limits. At bottom, correlogram , spectral counter-part of auto-correlation