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Italian National Tide Gauge Network

National Tide Gauge Network is the most important measurement network for detecting the sea level present in the Mediterranean sea. This is not astonished, because of the 7.375 km (11.866 miles) of Italian coastline and, above all, the particular morphology of our Peninsula, which determines the partition of the two main different basins, which can be considered such as they are closet: the first is the one of the west Mediterranean, bounded by Sicily channel and characterized by huge abyssal plains, the second one, the east Mediterranean, is bumpier and overawed by the Mediterranean dorsal system.
SIAP+MICROS did the installation of the new RMN which is configured on the skeleton of the historical National Tide Gauge Network, a group of four subnets, conceptually noticeable but technologically integrated:
1) Network for measurement of sea level and detemination of tided and the oscillation;
2) Meteo-maritime Network of italian coastline;
3) Network for location and prompt characterization of the freak waves (tsunami), of their propagation and for the characterization of the exceptional sea storm;
4) Network for quality characterization of marine tides, environmentally most sensible;

At the moment, these stations are working:
Imperia, Genova, La Spezia, Livorno, Civitavecchia, Cagliari, Carloforte, Porto Torres, Palermo, Porto Empedocle, Catania, Messina, Reggio Calabria, Crotone, Taranto, Otranto, Bari, Vieste, Ortona, Ancona, Ravenna, Venezia, Trieste, Napoli, Palinuro, Salerno, Lampedusa; S.Benedetto del Tronto, Sciacca, Stromboli (Ginostra), Gaeta, Ponza and Marina di Campo.

Where the following measures are detected: sea level via radar and via shaft-encoder and humidity.

The detected parameters, common to all the stations (but Sciacca, which is not equipped with wind sensors) are:
1) Microwaves sea level sensor
2) Shaft-encoder sea level sensor (with a buoyant)
3) Barometric sensor
4) Temperature / Humidity sensors
5) Water temperature sensor
6) Wind speed sensor
7) Wind direction sensor
The frequency for sea level measurement is of 1 minute for each station (this acquisition frequency allows the measure of freak wave and it can automatically reach the 1 sec frequency, in case of extreme phenomena).

The RMN has got a compendium in the website www.mareografico.it which allows data display (both on real time and on historical bank data), graphics and data downloading and it’s set in a such way which makes the consultation easier to sections in which is subdivided: Tide Gauge, Freak Waves and Quality of water.