Sabato, 28 Novembre 2020
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Home English Venice underwater amid seasonal 'high water'

Venice underwater amid seasonal 'high water'


(ANSA) - Venice, October 15 - Tourists and locals waded
across St Mark's Square when water flooded Venice for the first
time this autumn on Monday, with seasonal high tides rising 105
centimeters above average sea level in the lagoon city.
Known as 'acqua alta', or high water, the flooding reached
the first level of alarm, or "code yellow", meaning about 8-9%
of the city's surface was under water.
Autumn marks the beginning of the high-tide season, when
water routinely spills over the city's banks, flooding its
streets and squares.
The causes are both natural and man-made.
Decades of pumping groundwater caused significant damage to
the delicate foundation before the practice was called off.
Weather experts say the high-water threat has been
increasing in recent years as heavier rains have hit northern
Other possible explanations for the phenomenon include the
sea floor rising as a result of incoming silt and gas extraction
in the sea off Venice undermining the islands.
According to a recent study, plate tectonics are also to
blame as the Adriatic plate is sliding beneath the Apennine
Mountains, causing the area to drop in elevation.
Scientists have conceived various ways of warding off the
waters since a catastrophic flood in 1966 and a system of
moveable flood barriers called MOSE is near completion after
years of controversy.

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