EUROPEAN SEA LEVEL OBSERVING SYSTEM Station Information Sheet GLOSS Number Station name Port Tudy - Ile de Groix Country France Time zone 015E, GMT + 1 hour Latitude 47°38,7' Longitude 003°26,8W Ocean/sea Atlantic/ Responsible country France Committed to GLOSS No Operational? Yes Point of contact Bernard SIMON, Service Hydrographique et Océanographique de la Marine - SHOM 13 rue du Chatellier BP 426 29275 Brest Cedex France Tel: 33 (0) 298221868 Fax: 33 (0) 298220899 E-mail: mc@shom.fr WWW: http://www.shom.fr Authority responsible Service Hydrographique et Océanographique de la Marine - SHOM for tide gauge 13, rue du Chatellier BP 426 29275 Brest Cedex France Gauge servicing interval once a week Gauge servicing agency by a contractor Observation periods 21 years Gauge type float gauge Sampling rate hourly height Digital data Yes Real time data No Storm surge warning gauge No Additional parameters Atmospheric pressure Any other parameters MSL method Submission to PSMSL No PSMSL data holdings Other data banks Additional information the delay is two months Tide gauge benchmark description repère SHOM scellé au sol à proximité du mur de l'observatoire Frequency of levelling not regurlar Tide gauge zero relative to EUVN Tide gauge zero relative to 2.729 under the IGN69 zero national levelling datum Tide gauge zero relative to 7.168 above the chart datum, 4.430 above the IGN 69 zero tide gauge benchmark Auxiliary benchmark description TGBM B: repère SHOM scellé au sol à l'enracinement du quai est près de la facade nord de la station Permanent GPS within 1 km No EUREF code Campaign GPS Geological substrate Gauge signal likely to be affected by river outflow, density changes etc Any other information the delay is two months