Geoscience Reference
In-Depth Information
Fig. 1 The view of the studied object and its location
Fig. 2 Granulation curves in the Białka lower reach
Białka is a mountain river in which changes of bottom configuration depend on the
movements of bed material. The photographs were made in eight locations covering
the bottom, banks, and gravel bars. In total, the measurements of
a
and
b
dimen-
sions of 2,422 grains were made. Beside a small amount of fine fractions, in the
river bottom there are also gravels and stones, usually with diameters of 15-20 cm
and bigger grains, whose
b
dimension (grain diameter) reaches over 50 cm. Granulo-
metric curves of the bed material are shown in Fig.
2
. The curves marked with
numbers from 1 to 8 were made in April and May of 2010. The collection localities
are described in Table
1
. The “NB” curve was drawn on the basis of the measurement
