Sea-Level Observing Activities in Italy

GLOSS GE-XII, Paris, November 2011 SEA-LEVEL OBSERVING ACTIVITIES IN ITALY (Submitted in agreement with COI – Italian Oceanographic Commission) Maurizio Ferla ISPRA, High Institute for Environmental Protection and Research, Italy Managing Director of Venice Lagoon Service Castello 4665, 30122 Venezia, Italy T:+390415220555/:+390415235895 : +390415220521 F [email protected] - http://www.isprambiente.gov.it Gabriele Nardone ISPRA, High Institute for Environmental Protection and Research, Italy Marine Service Via Curtatone 3, 00185 Rome, Italy T:+390650074271 F : +39064957947 [email protected] - http://www.isprambiente.gov.it With the contribution of: Giovanni Arena, Giorgio Baldin, Marco Cordella, Sara Morucci ISPRA, High Institute for Environmental Protection and Research, Italy; Fabio Raicich, CNR - ISMAR Institute of Marine Sciences, Italy. ITALIAN SYSTEM FOR SEA LEVEL MEASUREMENTS ISPRA is the Governmental Organization which manages the Italian System for Sea Level Measurements. This system includes two tide gauge networks: 1. The National Tide Gauge network (NTG) constituted by 33 stations located into the main ports of the Italian Peninsula and Islands; 2. The Venetian and Northern-Adriatic Tide Gauge Network (VNATG) constituted by 54 stations scattered within the lagoons of Venice and Marano-Grado and at the inlets of the main rivers along the North Adriatic coastline. The National Tide Gauge Network (NTG) Map of tide gauge network The Italian National tide gauge network (RMN) is the leading network for sea level measurement in the Mediterranean. Italian Coasting development (7,375 km) , and its morphology determines the subdivision into two main semi-closed basins: the first one is the Western Mediterranean, bordered by the Strait of Sicily and characterized by large abyssal plains, the second one, the Eastern Mediterranean, much more rugged and dominated by the Mediterranean ridge system. A list of gauge sites Gauge station ANCONA BARI CAGLIARI CARLOFORTE CATANIA CIVITAVECCHIA CROTONE GAETA GENOVA GINOSTRA IMPERIA ISOLE TREMITI LA SPEZIA LAMPEDUSA Lat. 43° 37' 29.16'' 41° 08' 24.74'' 39° 12' 36.69'' 39° 08' 52.69'' 37° 29' 53.09'' 42° 05' 38.25'' 39° 04' 60.89'' 41° 12' 35,97'' 44° 24' 36.46'' 38° 47' 06,65'' 43° 52' 42.02'' 42° 07' 07,97'' 44° 05' 47.79'' 35° 29' 59.38'' Long. 13° 30' 23.46'' 16° 51' 57.72'' 9° 06' 51.38'' 8° 18' 34.03'' 15° 05' 37.77'' 11° 47' 22.73'' 17° 08' 13.40'' 13° 35' 23,05'' 8° 55' 31.86'' 15° 11' 26,76'' 8° 01' 07.91'' 15° 30' 05,64'' 9° 51' 27.52'' 12° 36' 15.98'' LIVORNO MARINA DI CAMPO MESSINA NAPOLI ORTONA OTRANTO PALERMO PALINURO PONZA PORTO EMPEDOCLE PORTO TORRES RAVENNA REGGIO CALABRIA SALERNO SAN BENEDETTO DEL TRONTO TARANTO TRIESTE VENEZIA VIESTE 43° 32' 46.63'' 42° 44' 33.48'' 38° 11' 46.73'' 40° 50' 29.06'' 42° 21' 21.24'' 40° 08' 49.74'' 38° 07'17.08'' 40° 01'47.68'' 40° 53' 42,64'' 37° 17' 08.72'' 40° 50' 31.94'' 44° 29' 31.38'' 38° 07' 18.19'' 40° 40' 35.91'' 42° 57' 18,44'' 40° 28' 32.17'' 45° 38' 57.81'' 45° 25' 05.59'' 41° 53' 17.10'' 10° 17' 57.62'' 10° 14' 18.00'' 15° 33'48.65'' 14° 16' 09.10'' 14° 24' 53.50'' 18° 29' 49.52'' 13° 22' 16.79'' 15° 16' 31.05'' 12° 57' 56,12'' 13° 31' 36.64'' 8° 24' 14.09'' 12° 16'57.83'' 15° 38' 56.10'' 14° 45' 03.02'' 13° 53' 23,13'' 17° 13' 25.55'' 13° 45' 28.58'' 12° 25' 35.50'' 16° 10' 37.24'' An overview of the gauge technology employed in the network Each station is equipped with a level tool that gauges and records the tide level by radar. The sampling frequency is adjusted on data every 10 minutes. The gauging reliability in each station is ensured also by a shaft-encoder, recording digital form the locally measured tide curve. All these stations are equipped with tools to gauge such meteorological parameters as atmospheric pressure, air temperature and humidity, wind direction and speed, water temperature; the stations of Trieste, Venice, Vieste, Otranto, Messina, Palinuro, Carloforte, Imperia and Livorno are also equipped with a multiparametric probe to measure the parameters of conductivity, temperature, pH and Redox thus constituting the first network of coastal water quality stations. The stations in Imperia, Marina di Campo, Carloforte, Ponza, Napoli, Porto Empedocle, Ginostra, Otranto, Isole Tremiti and Ancona intended to measure anomalous waves agree with the guidelines of the Intergovernmental Coordination Group for the Tsunami Early Warning and Mitigation System in the Northeast Atlantic area , Mediterranean and connected seas (ICG / NEAMTWS) Italian Regional Emergency Center - Ministry of Foreign Affairs MFA-DGDC. The Tide Network was projected for the detection and characterization of early tidal waves (tsunami), its propagation and characterization of exceptional breaking sea. Web, email etc. addresses of data banks and of sources of further information ISPRA dedicates itself wholeheartedly to real-time diffusion of its data, which takes place through the IOC sea level station monitoring facility (http://www.ioc-sealevelmonitoring.org/ list.php?order=delay&dir=asc&contact=28), as well as to the general public through a dedicated web site (http://www.isprambiente.it/site/it-IT/Servizi per l’Ambiente/Rete Mareografica Nazionale/, currently using the mirror Error! Hyperlink reference not valid.). On these web site you can access three distinct sections (tide gauge, anomalous waves and water quality) to facilitate consultation and downloading data, graphics and documents. Following information and documents are available online: 1) real time data; 2) historic data; 3) table with harmonics; 4) cards monographic station of the new precision leveling; 5) display the morphology of the tide gauge sites on the satellite map and through interactive photo gallery. Data are updated hourly, whereas documentation is revised as changes occur. For further information contact the mail address: [email protected] The Venetian and Northern-Adriatic Tide Gauge Network (VNATG) The VNATG is now constituted by a 54 Tidal Gauge system network distributed in the lagoon basin and along the North Adriatic coastline. Twenty-five of these stations are equipped for real time data transmission the processing centre of ISPRA –Venice Lagoon Service located in Venice . The 54 tide gauge stations, the data processing Centres and the Radio Relay Network constitute the Real Time Tidal Gauge System of the Lagoon of Venice. This system is a fundamental part of the weather and marine monitoring system of Italian Seas, controlled by ISPRA including the NTG mentioned and National Sea Waves Measuring Network. In addition, the ISPRA –Venice Lagoon Service has the capability to exchange data measured in real time between the networks of the Environmental Operating Centres of the North-Eastern Regions of Italy (Veneto, Friuli Venezia Giulia and Trentino-Alto Adige). The Venetian and Northern-Adriatic Tide Gauge Map (VNATG Map) List of tide gauge sites of the Venetian and Northern-Adriatic Tide Network Gauge station BARENE DELLA GRISA BOTTE TREZZE BRONDOLO BURANO CAMPALTO CANAL ANCORA CAORLE CASON FIGHERI CAVALLINO CENTRO CAVALLINO DARSENA CHIOGGIA VIGO COL VISENTIN DIGA NORD MALAMOCCO DIGA SUD CHIOGGIA EX POVEGLIA FARO ROCCHETTA FOCE PO' FUSINA GRADO BELVEDERE GRASSABO' LE SALINE LIDO DIGA NORD LIDO DIGA SUD LIDO METEO LIGNANO MARANO LAGUNARE MARGHERA MEDA - BOCCA LIDO COLLEGIO MOROSINI MOTTE DI VOLPEGO MURANO PADOVA METEO PETTA DE BO' PAGLIAGA PIATTAFORMA (8) PORTO CALERI POVEGLIA PRIMERO PUNTA DELLA SALUTE SACCA SESSOLA SAN GIORGIO IN ALGA SAN NICOLO' SANT' ERASMO SETTEMORTI TAGLIATA VECCHIA TESSERA TORCELLO TORSON DI SOTTO TREPALADE Lat. Long. 45,289783 45,197028 45,183817 45,487503 45,478733 45,524314 45,591628 45,319144 45,484750 45,485542 45,223617 46,056236 45,334450 45,228547 45,374556 45,339217 44,844939 45,418400 45,683128 45,724600 45,521456 45,503656 45,423083 45,418108 45,430150 45,697858 45,762106 45,474208 45,426744 45,424694 45,391847 45,458225 45,402769 45,266422 45,519222 45,314242 45,095244 45,380672 45,711000 45,430692 45,407500 45,425169 45,430892 45,454033 45,293753 45,409858 45,491233 45,495689 45,348583 45,557317 12,189336 12,204603 12,274506 12,415486 12,300239 12,485906 12,861528 12,175003 12,551336 12,585528 12,280433 12,281964 12,341625 12,312767 12,293450 12,311011 12,464147 12,259378 13,383439 13,385703 12,529878 12,469311 12,436553 12,426436 12,382950 13,143267 13,166847 12,239158 12,414564 12,365211 12,261831 12,344664 11,858542 12,241781 12,383336 12,508314 12,325369 12,332658 13,461031 12,336658 12,323350 12,294947 12,382597 12,385572 12,212408 12,215350 12,328531 12,411822 12,229525 12,444950 TREPORTI VAL GRANDE VALLE AVERTO VALLE FOGOLANA VALLE MOROSINA 45,474172 45,312583 45,348347 45,257869 45,288944 12,445842 12,275081 12,169931 12,163067 12,148975 Gauge technology employed in The Venetian and Northern-Adriatic Tide Gauge Network (VNATG) Each of these stations is equipped with a floating tool that gauges and records the tide level electronically. The sampling frequency is adjusted on data every 10 minutes. The gauging reliability in each station is ensured by a second, also floating, mechanic and elettronic tools, recording on a paper diagram and digital form the locally measured tide curve. A limited number of these stations, according to their location, are also equipped with tools to gauge such meteorological parameters as atmospheric pressure, rain, wind direction/speed within the Venice lagoon, as well as wind direction and speed along the Northern Adriatic coastline. GPS technology in the Venetian and Northern-Adriatic Tide Gauge Network (VNATG) (VNATG) Punta della Salute tide gauge station has been equipped with a co-located suitable GPS. GPS data have elaborated by the University of Bologna in order to detect the effect of land subsidence in the sea level measurements. Moreover, two new co-located GPS devices have been installed at the tide gauge stations of Venezia - Lido Diga Sud and Grado along the North Adriatic coastline. Data availability in particular from the GLOSS Core Network stations The ISPRA – Venice Lagoon Service has the capability to exchange data measured in real time between the networks of the National Civil Protection and the Environmental Operating Centres of the North –Eastern Regions (Veneto, Friuli Venezia Giulia and Trentino Alto Adige). The time series data are available in digital form (on-line) since 1989; in particular, Venezia – Punta della Salute time series data of mean sea levels is available in digital form since 924 (www.ispravenezia.it). Addresses,Web, and further information Maurizio Ferla ISPRA, High Institute for Environmental Protection and Research, Italy Managing Director of Venice Lagoon Service Castello 4665, 30122 Venezia, Italy T:+390415220555/:+390415235895/+390415212683 : +390415220521 F [email protected] - http://www.isprambiente.gov.it/ - www.ispravenezia.it Other Italian Governmental Organizations managing tide data Fabio Raicich CNR-ISMAR Trieste, viale Romolo Gessi 2, 34123 Trieste, Italy Tel: +39040305312, Fax: +39040308941, email: [email protected] Trieste Molo Sartorio tide gauge is owned by the Italian National Research Council and is operated by the Trieste laboratory of the Institute for Marine Sciences. It is located at 45°38’50.1”N latitude, 13°45’34.1”E longitude. The station was established in October 1859 on Molo (pier) Sartorio about 20 m from present position, to which it was moved in 1926. In 2009 the station was included in the GLOSS Core Network (No. 340). Four float tide gauges are active, namely two analog instruments manufactured by Ott (1961) and Pagan (about 1970) and two digital Ott Thalimedes instruments (2000-2004) with near-real-time data transmission. An tide gauge manufactured by Fuess in 1911 is no longer in operation. The tide gauge zero is 3.993 m below the local benchmark, located within the cabin, whose height is quoted relative to the national geodetic network managed by Istituto Geografico Militare. A GPS antenna is located on top of the building hosting the tide gauge. It is owned and operated by the University of Bologna. Monthly and annual sea level means are provided to the PSMSL every year; Delayed Mode hourly data are provided to GLOSS every month since June 2009. Data are also provided in near-real-time to regional Civil Protection Agency. The latest 48-hour sea-level diagram is displayed at www.ts.ismar.cnr.it/node/15. The archive includes monthly and annual means since 1875 (with gaps), hourly values since 1905 (with gaps) and 1/minute data since 2001. Information on the tide gauge is also available at www.ts.ismar.cnr.it together with astronomic tide predictions. Other Regional Organizations exchanging tide data with ISPRA Networks Guglielmo Berlasso Managing Regional Director Friuli Venezia Giulia Regional Functional Centre of Defence Via Natisone, 43 – 33057 Palmanova (Udine), Italy T:+390432926111:+390432926000 F [email protected] – www.protezionecivile.fvg.it Renato Villalta Friuli Venezia Giulia Regional Water Basin Authority (Marano – Grado Lagoon) Special Administrator Contrada Savorgnan, 9 - 33057 Palmanova (Udine), Italy T:+3904329357111:+3904329357F [email protected] – www.abr.fvg.it Paolo Canestrelli CSPM – Centro Previsione e Segnalazione Maree of Municipality of Venice Managing Director Palazzo Cavalli 4090, 30124 Venezia, Italy T:+390412748787:+390415210378 F [email protected] – www.comune.venezia.it/maree