2.6 Ice Cover
Ice cover was monitored using a time-lapse camera (Reconyx, Holmen, WI,
USA) that took hourly photos of the southern edge of the reservoir.
Water temperatures were also used to identify the solar radiation
penetration into the water column and as such, ice formation, as ice and
snow cover reduce or prevent radiation from entering the water column.
Figure 5 illustrates the key phases of the reservoir regime. The
ice-free period (Fig. 5a) and the ice-cover period (Fig. 5c) are
separated by the onset (Fig. 5b) and break-up (Fig. 5d) of ice.