Down
Under From
Up Above
Shark
Bay,
Australia
as seen by
the
Expedition
10 crew on
the
International
Space
Station.
This image
shows
large
solar salt
works
developed
in Useless
Loop and
Useless
Inlet. The
salt is
produced
when ponds
are
repeatedly
flooded
with
seawater,
which is
progressively
concentrated
by
evaporation.
This
particular
salt farm
opened in
1967 and
expanded
operations
in the
1990s.
Today,
this salt
farm
comprises
over 50
ponds, the
newest
pond in
the
outermost
pond in
Useless
Inlet,
which
provides
the first
evaporation
cycle to
increase
the
salinity
of the
water
prior to
entering
the next
pond.
Complex
chemical
and
biological
adjustments
occur in
the system
each time
the
configuration
of ponds
is
changed. |