A Macroscale Hydrogeological Numerical Model of the Suio Hydrothermal System (Central Italy)

Figure 3

Examples of hydrothermal springs and water wells. (a) S9 spring, with a temperature up to 50°C. (b) W15 water well, whose apparent artesian behaviour is related to the degassing phenomenon. (c and d) Drilling of the W9 water well (1977). Images courtesy of Dr Geol. Francesco Nolasco. The images show the moment when the drilling reaches the deep hydrothermal water inside the carbonate complex (CC). The CO₂ degassing rises the water column up to 20 m above the ground.