GNGTS 2017 - 36° Convegno Nazionale

320 GNGTS 2017 S essione 2.1 Fig. 2. In this case, the thermo-hygrometer was installed 5 m below surface in Campo Salesi, along the plains near Spoleto. The temperature recordings resulted being without changes, from August 16 to September 11, 2017. However, the temperatures were unusually high at 19.2°C. Three other water well temperature recordings were also unchanged over the study period. While, only one water well temperature recording along the plain north of Foligno resulted being highly variable. Accurate studies of the water extraction system in this latter case, suggested the presence of functional anomalies of the valve. After substituting the valve, the Fig. 2 - Temperature and humidity levels recorded at Campo Salesi, near Spoleto, from August 16 to September 11, 2017. Fig. 3 - Observational points used by the GEA Observatory. They are equipped with thermometers, where indicated by red circles; the blue circle indicates the Pale Station which is equipped with a seismometer, a Radon meter, a meteorological station and a video camera; turquoise circles indicate meteorological stations, while the violet squares indicate stations belonging to the Central Italy Electromagnetic Network. This map was retrieved at: www.maphill. com.