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Live. Yesterday morning, forty years after the decision to focus on mobile dams, the bulkheads of the Mose were finally raised. And to the relief of supporters and skeptics they left Venice dry. Before throwing the boots under your arms, you better wait … Woe to anyone if someone abandons the nightmare. And the same newly re-elected mayor of the city of serenity Luigi Brugnaro, who also has a turbo-optimistic character, accompanied yesterday to the rejoicing (We managed for the first time in the world to have an underwater barrier that rises and stops the sea) the recommendation Do not think that all the problems have been solved: first you have to finish the Mose, then there is also San Marco and other low places that need work to raise the banks. A long job. Yesterday, however, went really well. To the most beautiful and delicate city that, after months of suffering, was not flooded by the first high tide of autumn, a fact that would have rekindled heated controversies about the biblical times of opera, beaten by Patriarch Francesco Moraglia himself (one day of hope, waiting, with some reflections also on the fact that this result could also be obtained in a much shorter time) and for the whole of Italy. That after having withstood the impact of the first western Covid-19 tsunami and having left a great impression of efficiency, generosity, architectural and artistic talent on the new Genoa bridge, you now have the opportunity to respond with facts to the irritating irony of too many foreign eyebrows. Ours is a country that, in critical moments, is often capable of giving the best of itself. In any case, this is the problem. A formidable culture of emergency (in certain things we really are the best) unfortunately combined with the inability to withstand the daily challenge of good maintenance. Which condemns us to rejoice for the reconstruction of a magnificent bridge while decades of errors in the management of the network of streams, streams and rivers cause the collapse of other bridges, as happened yesterday, in other parts of the territory. And always like this. Forever.
The play
After decades of drowsiness, sluggishness, bribes, orders handed out to friends and friends of friends until the 2014 scandal broke, we are sure that the construction of the Mose would have accelerated as much if the disastrous Aqua Granda of November 12 had occurred. last year. , with the tide rising to 187 centimeters at the so-called Zero tide, hadn’t hammer bells sounded around the world, raising the alarm about what tomorrow (not some day far away: tomorrow or the day after or next week) might happen? in Venice? Sure, yesterday went well. But certain disproportionate celebrations and in part dictated by propaganda and by the invitation to carry out larger works (a very thorny issue given the too many precedents of large construction works kept open for decades with dozens of varied skills and astronomical increases) must take into account some important things. . Like the fact that yesterday the traffic of boats that sail daily through the lagoon was non-existent. Or that the forecasts based on which it had been decided yesterday morning to raise the 78 doors spoke of winds at 65 kilometers per hour and waves of 7 meters high offshore, against 33 kilometers per hour (with gusts to 41: very less than certain peaks at 144 as in early October 2012) that would have been recorded at noon and on the one meter and 40 centimeter waves recorded at the Cnr tower, 8 miles from Chioggia. To make a long story short: before assuming that the Mose works perfectly, we will have to wait, unfortunately, for more extreme days. And maybe full engine automation. The one in the Control Room that will govern the gates but is not ready (still six months, it seems) and was replaced yesterday by the radio links of the military engineers. And we always come back. Seeing those yellow mobile dams raised and people walking dry in slippers in Piazza San Marco made people breathe in relief.
And so he reads of the happiness of Carlo Alberto Tesserin, first procurator of San Marco: La seca, seca Basilica. the first time and a very important fact. At 90 centimeters of tide we would have had to face the water coming from the square, but we didn’t get there. Caution is essential. Even more so because maintenance will be very expensive and some bulkheads, as shown in a photo published yesterday by a Venetian ecologist, are already in very poor condition today. And that caution is necessary not only reminds us of the fury of Aqua Granda of November 12, 2019. But the predictions of the scientists, summarized in the book Venezia e l’Acqua Alta, published by Maredicarta, by that Giampietro Zucchetta who has just finished to retake and update, with new data, a highly documented study from almost thirty years ago. Where we read, for example, that the high tide went from 30 throughout the 19th century to 164 in the 20th century with a terrifying acceleration in this century: 146 to 2019. With 3 scenarios until 2100 elaborated with data from the Intergovernmental Group of Experts on Climate Change. In the worst case, there would be a 430% increase in the tides considered in the study and a consequent huge increase in the frequency of the need for interventions to close the Mose. The Lake of Venice: a catastrophe for the port, the citizens, the lagoon, the environment. An issue that must be addressed not at the end of the century: now. Certainly something small but useful could be done in a short time, Zucchetta writes: Explain to non-Venetians how mysterious “Tidal Zero” actually dates back to the late 19th century and is roughly a meter lower. the pavement part of the city. The egg of Columbus, he says, would simply be to change the reference level of the tidal measurements, referring without misunderstanding to a “middle level” of the “masegni” of the pavement of Venice. And finally we would avoid pushing so many tourists, scared by relatively normal tides and yesterday that they could not be controlled by the Mose, to cancel a trip with a somewhat surreal reason: Com ‘San Marco? My daughter can’t swim.
October 3, 2020 (change October 3, 2020 | 23:34)
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