A
Border
Ice
Ice
← : 10 cm/s
Ice
← : 2 cm/s
C
B
v
a. Average ice velocities in
b. Average ice velocities in
the confluence of rectan-
the confluence of alluvial
gular channels.
channels fitted with bor-
der ice constriction.
c. Instantaneous velocities
in confluence of alluvial
channels (see Fig. 19 for
explanation of points B
Border
Ice
and C).
← : 10 cm/s
C
B
Figure 17. Ice velocities.
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