Fig. 3: Meteorological and lagoon conditions at the beginning of the flow reversal.

a Time-evolution of wind velocity (left scale, lines) and direction (right scale, dots), b time-evolution of lagoon water level (dots), spring flow rate (left scale, plus symbols) and hydraulic gradient (line) between lagoon and aquifer at well ISS (right scale), during 10 days from 25 November 2020 to 4 December 2020.