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η
0
0.2
0.4
0.6
0.8
1
0
σ
=0.1
σ=
0.05
σ=
0.01
4
8
12
16
20
Figure 3.16
Plots of the relative share of depressions in the upper groundwater contami-
nation with
137
Cs
η
on the groundwater table depth
Z
for different values of the areal share
of depressions,
σ
=
F
a
/F
s
.
area of depressions is 15.24 ha (10.23%), and the area of lineaments is 12.69 ha
(8.52%). The respective background area is 121.07 ha (81.25%).
Performing the balance calculations in the same way as given by equation (3.1)
but for two active zone types (depressions and lineaments), we obtained 20.4% share
of depressions in the average infiltration over the plot, 12.8% share of lineaments, and
66.8% share of background areas. Using the formula of balance averaging for con-
centrations similar to (3.3) and taking the relative groundwater pollutant concentration
in the background as 1 and the corresponding relative concentration in depressions as
2 and in lineaments as 1.5 (according to our preliminary estimate), we obtain the
assessed share of depressions in the general pollution of upper aquifer groundwater
area as 41%, the share of lineaments as 19%, and the corresponding share of
background areas as 40%. Thus, according to this preliminary result, the depression
and lineaments, despite their relatively small proportion of the total area of the site,
may be responsible for 60% of total income of the pollutant into groundwater.
It is obvious that the preliminary assessments given above for the relative
influence of one and two types of PFMZ can be considered only as a first approx-
imation in the assessment of the role of anomalous landscapes in the infiltration
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