was reached a month and a half later. Despite
that, the fact that the snowpack decreased for more than 10 days, even though slightly, was
enough for the filter to select this date.
12
Figure 4 – Evolution of the snowpack (black line), accumulated melting (dashed blue
line), and daily runoff (grey bars) for catchment Þingvallavatn (year 1980 – 1981,
top)
and catchment Hágöngulón (year 1986
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