Figure legends
Figure 1: Map of the Can Vila catchment, showing the main land cover
types and the location of the instruments and sampling sites used for
this study.
Figure 2: Isotopic ratios of all the precipitation samples compressed
into a single year period. Non-effective points represent the samples
that were tentatively discarded as evapotranspired after the recharge
model. Lines represent the seasonal variations according to the best
fits of Eq(4).
Figure 3: Isotopic ratios of mobile soil and ground waters samples
compressed into a single year period. Lines represent the seasonal
variations according to the best fits of Eq(4), the dashed line showing
that the amplitude A was not significantly different from 0 for
VP01.
Figure 4: Variation of the isotopic ratios of ground water with water
table level at VP05. The grey line separates the shallow and deep water
levels analysed in Table 4.
Figure 5: Stream discharge (5-minute step) and isotopic ratios of stream
waters during the recorded period.
Figure 6: δ 2H versus δ 18O plot of
the precipitation, soil and stream waters, along with the Local Meteoric
Water Line.
Figure 7: Variation in time-weighted young water fraction at the Can
Vila catchment with increasing quantiles of the flow duration curve. The
curve represents Eq. (8), using parameters obtained by fitting Eq. (9)
to all the stream water δ18O isotope values. Maximum
sampled discharge was 226 mm d-1. Vertical bars
represent standard errors. (1) denotes a dimensionless variable.
Reproduced from Gallart et al . (2019).
Figure 8: Time threshold for the definition of the young water fractions
smaller than 1 shown in Figure 7, after Eqs. (6) and (7). Bars represent
90% confidence intervals. (1) denotes a dimensionless variable.
Figure 9: Flow-weighted young water fractions
(\(\mathbf{F}_{\mathbf{\text{yw}}}^{\mathbf{*}}\)) and discharge
sensitivities of young water fraction (Sd ) for 6
one-year windows and the full record available at Can Vila. Q represents
discharge. Bars represent standard errors. (1) denotes a dimensionless
variable.
Figure 10: comparison between relative cumulated time, flow and\(\mathbf{F}_{\mathbf{\text{yw}}}^{\mathbf{*}}\) simulated applying Eq.
(8) to the 5-minute step flow record, as well as the relative cumulated
flows for the dynamic and weekly sampling records. The 1:1 line is shown
as a reference for a uniform distribution.