Tide gauge observations reference networks (REFMAR) - RONIM tide gauges

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.

Four main types of data are available for download:

- “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.

- "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.

- "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.

- "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.

Date (Publication): 2015-03-10

Citation identifier: http://www.shom.fr/OBSERVATION/NIVEAU_MER_REFMAR_RONIM

Presentation form: Digital map

Credit: The SGMer has approved the instruction "on sea level observations and the dissemination of related data" (« relative à l'observation du niveau de la mer et à la gestion et à la diffusion des données en résultant ») (SGMer no. 863 of 20 April 2010, by way of delegation from the French Prime Minister, which formally appoints Shom as national coordinator and referral agent in the field. The acronym REFMAR, Réseaux de référence des observations marégraphiques (Reference network for tidge-gauge observations) is used for this purpose.

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Shom		refmar@shom.fr	Originator

Maintenance and update frequency: Irregular

Theme

sea level observations
sea level
sea level
environment
product
open data

GEMET - INSPIRE themes, version 1.0

Environmental monitoring facilities

Use limitation: Data may be freely used providing that the source is mentioned as follows "REFMAR. http://dx.doi.org/10.17183/REFMAR#RONIM "

Use limitation: The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.

Use limitation: The product is distributed under an Opendata license (version 2.0, April 2017), defined by the Etalab mission.

Access constraints: License

Use constraints: Other restrictions

Other constraints: Data may be freely used providing that the source is mentioned as follows "REFMAR. http://dx.doi.org/10.17183/REFMAR#RONIM "

Access constraints: Other restrictions

Other constraints: No public access restrictions.

Classification: Unclassified

Spatial representation type: Text, table

Language: Français

Character set: UTF8

Topic category

Environment

Supplemental Information: Les observations marégraphiques servent de nombreuses applications :

Étude des marées océaniques

Sécurité de la navigation (navigation côtière, réalisation des cartes marines, calcul des prédictions de marée, ...)

Détermination des références verticales (zéro hydrographique ou zéro des cartes marines, détermination des niveaux des plus basses / des plus hautes mers astronomiques, niveau moyen des mers, ...)

Études météo-océaniques (ENSO, El-Nino, La Nina, seiches, tempêtes, ...)

Niveaux extrêmes (statistiques sur les périodes de retour, ...)

Suivi à long terme des composantes du niveau de la mer comme l'évolution du niveau marin relatif et absolu (grâce à des antennes GNSS co-localisées aux observatoires marégraphiques. Cette activité est portée par SONEL, composant l'IR I-LICO

Intégration dans les modèles de prévisions océanographiques (mercator océan, ...)

Systèmes d'alerte au ondes de tempêtes (vigilance météorologique Vagues-Submersion) et aux tsunamis (CENALT, ...)

Validation des observations satellitaires (Jason 2, Jason 3, ...)

L'étude et la surveillance des variations climatiques récentes et actuelles du niveau de la mer s'organisent au niveau mondial autour du programme GLOSS (Global Sea Level Observing System) de la Commission Océanographique Intergouvernementale (COI) de l'UNESCO. Ce programme s'appuie notamment sur un réseau mondial de quelque 300 stations de marégraphie côtière autour duquel s'articulent des réseaux régionaux plus denses. Parmi elles, 16 stations françaises. Les stations GLOSS sont typiquement regroupées suivant cinq pôles d'intérêt scientifique :

- GLOSS-LTT, pour l'étude des tendances à long terme du niveau des mers ;

- GLOSS-ALT, pour la "calibration" des altimètres radar embarqués sur satellite ;

- GLOSS-OC, pour la surveillance de la circulation générale des océans ;

- GLOSS Sea-Level Station Monitoring Facility, pour l'amélioration des plates-formes d’acquisition et de transmission des données de niveau de la mer pour assurer la communication en temps quasi-réel ;

- GLOSS GNSS at Tide Gaude Data Centre (Tiga), pour la surveillance des déplacements verticaux du socle sur lequel reposent les marégraphes. Pour cette dernière mission, c'est SONEL qui joue le rôle de centre de données GNSS aux marégraphes. Les informations sont disponibles sur www.sonel.org

Unique resource identifier: WGS 84 (EPSG:4326)

Distribution format

Name	Version
TXT	---
XML	-
JSON	-

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Shom		refmar@shom.fr	Point of contact

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://data.shom.fr/donnees/refmar	Shom Geoportal
WWW:LINK-1.0-http--link	https://data.shom.fr/donnees/refmar/3/download	Dowwload data

Hierarchy level: Series

Conformance result

Date (Publication): 2010-11-23

Explanation: Information sur la conformité au règlement d'interopérabilité des séries et des services de données géographiques.

Pass: Yes

Statement: Several generations of devices have been used for sea level measurement in France:

- The tide scale with [the oldest systematic observations of sea level dates from 1679 and were made in Brest];

- The float tide gauge [first deployment in France at Toulon in 1842];

- Digital tide gauges with successively: pressure sensor, ultrasonic sensor and since the early 2000s the radar sensor.

Data producers, REFMAR partners: thanks to the REFMAR activity, several organizations make available their sea level observations including:

- The Shom has in April 2017 a network of 46 tide gauges in mainland France and the Overseas: RONIM (Network of Observation of the Level of the Sea). Two other tide gauges complete the network: one in Monaco and the second in Madagascar;

- The ROSAME tide gauge network (Sub-Antarctic and Antarctic Observation Network at the level of MRE), which was created in the early 1990s is composed of four tide gauge observatories at Kergeluen, St Paul, Crozet Island and Dumont d'Urville;

- The DREAL-based flood forecasting services (SPC) deploy tide gauges in the estuaries as well as in the bays for their operational needs.

A list of partners is available here: https://refmar.shom.fr/reseau-ronim

Metadata

File identifier: OBSERVATION_NIVEAU_MER_REFMAR_RONIM.xml XML

Metadata language: Français

Character set: UTF8

Hierarchy level: Series

Date stamp: 2018-03-02T14:41:17

Metadata standard name: ISO 19115:2003/19139

Metadata standard version: 1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Shom		refmar@shom.fr	Point of contact

Other language

Language	Character encoding
English	UTF8

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