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the Mose is there and has proven to work, saving the historic center of Venice from the high waters. However, the doors of this job cost more to the community 6 billion euros, including bribes, on the day ofDecember 8 they have not risen. And then Venice and Chioggia They are fake underwater. But with the tide, the inevitable controversies also mount: if salvation is near, Venetians wonder why it shouldn’t be used. THE Merchants, enraged after timidly reopening the stores, are in a worse situation than when the stores were closed, with new damages to tell, in addition to the loss of income due to the coronavirus emergency. “Why hasn’t the Mose been raised?” It is the most frequently asked question. The answer is simple: that the the sea I would have reached 138cm (at 4:20 p.m.) and that it would remain above 130 centimeters for almost three hours, starting at 3:00 p.m. In Chioggia, an even more dramatic situation, with a maximum of 146 cm at 4:20 p.m. and a level higher than 130 centimeters from 2 p.m. to 6 p.m. Tidal center He explained that the wind picked up in the morning, causing the expected level to rise 120 cm. Cinzia Zincone, supervisor of Public works del Triveneto, added: “The wind it is an unpredictable and imaginative element. It was decided that the Mose, still in the experimental phase, should be started from 130 centimeters upwards. The technical times require a notice of 48 hours ”.
LEVEL 130 CM – According to the project, the Mose is destined to come into operation with tides of 110 centimeters, an altitude that would already flood a part of the city. But since it has not been completed (although it works) and the end of work is expected for December 2021, waiting tests It has been determined that it will be used with tides greater than 130 centimeters. That is why for two months, after it has proven to keep Venice dry, the inhabitants and merchants have expected that the tides will be high, because otherwise, with levels of 110-120 centimeters, the Mose does not come into operation and the houses and commercial premises on the ground floor go under water.
THE DECISION – But who decided that level? the 4th of September last the architect Elizabeth spitz, extraordinary commissioner of Mose, wrote to all the Venetian authorities, informing them that, according to Cinzia Zincone, with the port authorities and thePort Authority, I had established criteria lifting in the provisional phase, that is until December 2022. The decision makers were Spitz and Zincone, the executor was New Venice Consortium, the “safeguard threshold established for tides greater than +130 centimeters compared to Punta della Salute”. The notice period is essential, set at “6 hours before the closing of the barriers, with a relative indication of time and duration”, to be sent to the Prefect, Questor and the interested mayors. This protocol indicates the duration of the erection of the barriers in a maximum of two hours.
PREDICTION – In this case, according to the Maree Center, the wind picked up in the morning. On Monday, December 7, this was the forecast of the Technical Table: “On Tuesday, December 8, the passage of a new local depression, due to the lockdown situation, which will lead to a new intensification of the winds of sirocco throughout the Adriatic and waves of about 5 m high in the northern part ”. The general forecast was 120-130 as of 3:30 p.m. Tuesday. Then it changed in the course of the morning. And then him mermaids high alert.
TECHNICAL TIMES – Does it really take 48 hours to raise the Mose, as Administrator Zincone said? In previous cases, it had taken much less time. To physically get up, doors require you to give 25 ai 50 minutes (a lot depends on the wind and sea conditions). The Port must be notified well in advance (at least 6 hours) before the start of the Mose, to have the stop orders to navigation. There is also another variable, that of technical teams who should provide for the operations of expulsion of water and of air injection in preparation, following the procedure to the end. But like me firefighters they must be organized to intervene when necessary.
OPPOSING INTERESTS – At the 130-centimeter level, opposing interests are in conflict. The Venetians would like Moses to stand up as often as possible, even with low tides at 110 centimeters. to Procuratoria di San Marco, to safeguard the mosaics and the precious Basilica, you would need the tide level never to exceed 80-90 centimeters. the Port operatorsinstead, they would like the less stops, to avoid having to reschedule arrivals, departures, loading and unloading of materials.
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