Scientists studying ancient mud samples taken from the bed of the
Dead Sea separating Israel and Jordan have warned that the fragile
political situation in the Middle East will be made worse by the intense
water shortages their study is predicting.
Sediment cores drilled about 900ft down in the centre of the Dead
Sea's muddy basin – an environmental record stretching back 200,000
years – have shown that the giant lake has dried out in the past. This
suggests that taking freshwater from rivers for irrigating crops could
make a regional, prolonged drought almost inevitable.
Researchers
said their findings suggest that the entire water cycle in the region is
being destabilised by the over-abstraction of water from rivers that
drain into the Dead Sea and the Sea of Galilee, and that this could lead
to conflict between Israel and its neighbours.
"The Dead Sea is
already drying up because humans are using so much water. The evidence
it has actually gone away without any human intervention, under
conditions that might return soon, is something people should think hard
about," said Steven Goldstein, a geochemist at Columbia
University's
Lamont-Doherty Earth Observatory in New York. "As of now, virtually no
freshwater is entering the Dead Sea. All the water in the valleys is
being used, and that's part of the problem...[global warming] models
predict that the water now flowing down the rivers that is being used
won't be going down the rivers any more," Dr Goldstein said.
Water
is already an intensely political issue in the Middle East but the
discovery that the Dead Sea dried out completely during the last
interglacial period some 125,000 years ago suggests that the region is
more vulnerable to catastrophic drought than many expert had previously
believed.
"Now that we have evidence from cores that the lake did
actually dry down, all the previous climate models must be reconsidered
[because] the lake might actually go dry much sooner... There are
political implications of this big drying down because water is what
causes wars," Professor Emi Ito of the University of Minnesota said.
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