EARTHQUAKE – Geologist Fabio Taddei: ‘The Castelli Romani are not among the most seismic areas’. But he warns: ‘Prevention with compliant buildings is urgent’



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On the night between Friday 28 and Saturday 29 August the earth shook again in Lazio and did it with ben 3 earthquakes, all located northwest of Lariano and southeast of Rocca Priora, not far from the area of ​​Pratoni del Vivaro and via Tuscolana. But as of the 14th, there were 8 earthquakes, with epicenters at Lariano, Rocca Priora and Rocca di Papa, recorded by seismographs (a couple of which were less than 2.0, but all with depths between 9 and 11 km).

The 00.52 earthquake caused several Castilians to jump out of bed again, some of whom even went out into the street, as a precaution, staying there all night.

The incident once again draws attention to a highly seismic territory such as Italy.

We have already consulted for more information in the past. Fabio Taddei, Doctor in Geological Sciences and former councilor of Velletri.

Even at this time of night, Taddei, contacted by our editorial team, tried not to dramatize what happened, almost wanting to reassure the castle population: “The Italian peninsula – Said the veliterno geologist – it was formed by the collision between the African and European tectonic plates and by the collision between the Tyrrhenian and Adriatic plates ”.

The first two courses – he added – joined and climbed, forming the Alpine chain, while the latter formed two collision-subduction arcs (i.e. collision and slip of one plate under the other), that of the northern Apennines and that of the southern Apennines and Calabrian-Sicilian. Currently these arches continue to lift the Apennine mountain range and generate most of the earthquakes in the peninsula. The entire Apennine belt is located, therefore, in a suture zone between two plates in which the rocks that occupy the superficial part of the earth’s crust are mainly involved in horizontal compression movements and, secondarily, in transverse horizontal movements. and rotating in contact with both. archi, in central Italy “.

FABIO TADDEI

The seismicity of the Castelli Romani – it is still Taddei who emphasizes it – It is due to the movement of faults produced by the Lazio Volcano during its ancient activity that goes from 730,000 to 30,000 years ago and not to the movements of the magmatic reservoir of the volcano itself. A volcano, however, not yet extinct and not yet geologically stable.

The Castelli Romani are in a seismic zone, but not very high. However, it is clear that the Colli Albani area is affected by a reflection of seismic activity from the Abruzzo area or other more seismic contiguous areas. Even if there were earthquakes in the Castelli Romani area, there are still no conditions for disastrous earthquakes to occur., although the condition of many houses and public buildings would be affected even milder shocks.

However, the best prevention to date is still having buildings that comply with all regulations. In this sense, I would like to remind you that the earthquake does not kill, but the houses that collapse and the housing stock of the Italian historical centers is old and poorly maintained, so its recovery is necessary so that our historical centers are safer .

The most seismic areas of Italy are still Friuli, Garfagnana, the Apennines of Umbria-Marche, Abruzzo, Irpinia, Calabria, western Sicily. Lazio and the Castelli Romani area – Taddei concluded – are not among these “, despite having a certain “tradition” with earthquakes, as will also be remembered by those who remember the tremors of the eighties.

Meanwhile, the 6 earthquakes in just over 10 hours (recorded today, between 2:00 p.m. and midnight) did not reassure the population at all and there were no shortage of those who decided to spend the night by car …

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