This product includes all Shom digital files for tidal currents on mainland French coasts (Channel and Atlantic coasts) in mesh format. These digital files indicate surface tidal current components, hour by hour and for two typical tidal coefficients (45 and 95) and maximum current speeds for a mean spring tide. Brest is taken as the reference port for viewing purposes. The current points included in these files correspond to the arrows shown on current atlases.

Ce produit contient, sous forme maillée, l’ensemble des fichiers numériques du SHOM relatif aux courants de marée des côtes françaises métropolitaines de la Manche et de la façade Atlantique. Ces fichiers numériques indiquent les composantes du courant de marée de surface, heure par heure et pour deux coefficients de marée caractéristiques (45 et 95). Le port de référence est le port de Brest. Les points de courant contenus dans les fichiers correspondent aux flèches représentées sur les atlas de courant.

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 20 : minimum tidal range for average atmospheric conditions..

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : maximal tidal range for average atmospheric conditions..

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : tidal range for mean spring tides for average atmospheric conditions..

Marnages sur les côtes françaises de La Manche et de l'Atlantique pour le coefficient 20 : marnage minimal pour des conditions atmosphériques moyennes.

Tidal ranges on the French coasts of the Channel and the Atlantic for a coefficient of 95 : tidal range for mean neap tides for average atmospheric conditions..

Marnages sur les côtes françaises de La Manche et de l'Atlantique pour le coefficient 120 : marnage maximal pour des conditions atmosphériques moyennes.

Shom manages a network of permanent digital coastal tide-gauges on French coasts: the RONIM Sea Level Observation Network. Most tide-gauge observatories are partnered with one or more local partners.<br /><br /> Four main types of data are available for download:<br /> - “Raw high frequency" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 1-minute measurement; integration time 15 seconds (on the minute); sampling period: 1 second.<br /><br /> - "Raw non-real time" data: raw observations neither validated nor evaluated, obtained directly from the sensor. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.<br /><br /> - "Validated non-real time" data: observations checked and validated by Shom from the "Raw non-real time" data. 10-minute measurement; integration time 121 seconds (around every 10 minutes); sampling period: 1 second.<br /><br /> - "Validated hourly" data: observations checked and validated by Shom, generated from "Validated non-real time" data. Hourly measurement obtained from the Vondrak filter with triangular weighting. The hourly height cannot be calculated in the event of an observation gap greater than 1.5 hours.

Marnages sur les côtes françaises de La Manche et de l'Atlantique pour le coefficient 45 : marnage de mortes-eaux moyennes pour des conditions atmosphériques moyennes