Nearly half of Venice underwater

November 30, 2009
People walk on a plateform on the flooded Piazza San Marco (St Mark's square) in Venice

Enlarge

People walk on a plateform on the flooded Piazza San Marco (St Mark's square) in Venice. Much of the historic Italian city of Venice, including St. Mark's Square, was underwater Monday following a meteorological depression combined with natural tide waters, officials said.

Much of the historic Italian city of Venice, including St. Mark's Square, was underwater Monday following a meteorological depression combined with natural tide waters, officials said.

The tide monitoring centre said 45 percent of the Renaissance city was swamped when the lagoon rose 131 centimetres (more than four feet).

Venice was flooded 50 times between 1993 and 2002, with the worst 'acqua alta' on November 4, 1966, when the city was submerged by 1.94 metres of water amid catastrophic flooding throughout the country.

In February 1986, levels reached 1.58 metres above normal, and in December 2008 waters surged 1.56 metres.

The city has for years been wrestling with the problems posed by the threat of rising sea levels. Last year local authorities confirmed they were looking at a scheme to raise the city's buildings to meet the problem.

Under Operation "Rialto", local officials and engineers were looking at using piston-supported-poles placed at the bottom of each structure to lift buildings by up to a metre.

In April 2007, the United Nations cultural organisation UNESCO warned that Venice was one of its designated World Heritage sites that was threatened by .

(c) 2009 AFP

Filter


Move the slider to adjust rank threshold, so that you can hide some of the comments.


Display comments: newest first

Hunnter
Nov 30, 2009

Rank: 5 / 5 (1)
But what if a meter isn't enough?
In fact, already it isn't since the increases were above that level. (unless i am reading it incorrectly, but it is still really pushing it)

Ideally it would be nice to have air-filled containers under the buildings and 4 guiding poles (or 2) to let it follow the height naturally.
This is obviously going to be bad if there was a storm, but this could be remedied by a sensor or 2 on the outside at a specific level and clamps to hold the building steady. If there is a specific pressure on the sensor (under water), release the clamps slowly.

And while it looks like a method like this won't work on buildings like the one pictured, remember that we have boats bigger than some towns that can easily float on water, we already mastered this problem.

It would be a shame to see "The Floating City" be swallowed by the sea.
ringoes_man
Nov 30, 2009

Rank: 5 / 5 (1)
What about doing what the Dutch did with dikes? It must be easier to protect a single city as opposed to an entire country.
joefarah
Nov 30, 2009

Rank: 5 / 5 (1)
This seems to be highlighting the fact that the flooding isn't as bad as it has been in the past.
david_42
Dec 01, 2009

Rank: not rated yet
The Modulo Sperimentale Elettromeccanico project, which is an active sea wall, is projected for completion in 2012. First proposed in 1966, the environmental impact process ran until 2001. Construction started in 2003. It is intended to protect against surges of 3 meters.
Rank 4 /5 (8 votes)
Related Stories
Relevant PhysicsForums posts
  • Do some geologists actually act a lot like Randy Marsh?
    createdFeb 11, 2012
  • Discrepancy between oxygen and carbon-dioxide levels
    createdFeb 09, 2012
  • where gems are found in the world
    createdFeb 09, 2012
  • Wind Waves in Reservoir ~ Wind run-up and Wind set-up
    createdFeb 08, 2012
  • Balance of oxygen in the atmosphere
    createdFeb 01, 2012
  • The case for a methanol-based economy
    createdJan 30, 2012
  • More from Physics Forums - Earth

More news stories

Latin America mining boom clashes with conservation

Latin America is experiencing a mining boom as prices rise fuelled by a hike in global demand, but the region is also being hit by a wave of violent protests, strikes and rallies by environmentalists.

Space & Earth / Environment

created 4 hours ago | popularity not rated yet | comments 0

Political leaders play key role in how worried Americans are by climate change: study

More than extreme weather events and the work of scientists, it is national political leaders who influence how much Americans worry about the threat of climate change, new research finds.

Space & Earth / Environment

created Feb 06, 2012 | popularity 5 / 5 (6) | comments 72

NASA budget will axe Mars deal with Europe: scientists

US President Barack Obama's budget proposal to be submitted next week for 2013 will cut NASA's budget by 20 percent and eliminate a major partnership with Europe on Mars exploration, scientists said Thursday.

Space & Earth / Space Exploration

created Feb 10, 2012 | popularity 5 / 5 (3) | comments 55

Humans may have helped the decline of African rainforests 3000 years ago

(PhysOrg.com) -- Large areas of rainforests in Central Africa mysteriously disappeared over three thousand years ago, to be replaced by savannas. The prevailing theory has been that the cause was a change ...

Space & Earth / Environment

created Feb 10, 2012 | popularity 4.1 / 5 (14) | comments 20 | with audio podcast report

High planetary tilt lowers odds for life?

Highly-tilted worlds would have extreme seasons, subjecting life to alternating periods of scorching and subzero temperatures. This could make the development of all but hardiest, simplest creatures a long ...

Space & Earth / Space Exploration

created Feb 06, 2012 | popularity 4.8 / 5 (12) | comments 14 | with audio podcast


Google might launch Drive for cloud storage soon

(PhysOrg.com) -- Google's next big move, according to the Wall Street Journal, is a cloud storage service called Drive. Hardly first to the plate, Google is simply catching up to introducing its cloud reposi ...

Walney offshore wind farm is world's biggest (for now)

(PhysOrg.com) -- The Walney wind farm on the Irish Sea--characterized by high tides, waves and windy weather--officially opened this week. The farm is treated in the press as a very big deal as the Walney ...

Love a click away in Indonesia's Twitter Republic

He was a geeky kid from Yogyakarta, she a glamorous city girl in Jakarta. In a country with one of the world's most vibrant social networking scenes they fell in love on Twitter.

Europeans protest controversial Internet pact

Tens of thousands of people marched in protests in more than a dozen European cities Saturday against a controversial anti-online piracy pact that critics say could curtail Internet freedom.

Navy to begin tests on electromagnetic railgun prototype launcher

The Office of Naval Research (ONR)'s Electromagnetic (EM) Railgun program will take an important step forward in the coming weeks when the first industry railgun prototype launcher is tested at a facility ...

Explained: Sigma

It's a question that arises with virtually every major new finding in science or medicine: What makes a result reliable enough to be taken seriously? The answer has to do with statistical significance -- but ...