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Ce jeu de données contient : 
1) des enregistrements in-situ des paramètres de niveaux d'eau et de hauteurs de vagues issus de l'analyse spectrale, sur un transect perpendiculaire au récif, au niveau de la pente récifale (RS) et le platier récifal (RF). 
2) Une modélisation numérique des niveaux d'eau et de la hauteur des vagues dans le récif utilisant le modèle XBeach en mode "surf beat"
Un fichier "readme", téléchargeable avec les fichiers de données, décrit la nomenclature des fichiers et les variables mesurées.

Ces relevés in-situ ont eu lieu sur l'ouest de l'île de La Réunion (Océan Indien) dans une zone microtidale et fréquemment exposée à la houle australe ainsi qu'aux cyclones. Les récifs coralliens constituent une défense mécanique naturelle efficace des côtes contre les vagues océaniques. L'objectif  de CALHYCO est de fournir une meilleure compréhension des caractéristiques de défense côtière du système récifal face à ces événements.</gco:CharacterString>
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            <gco:CharacterString>Les fichiers de données (format .csv) sont téléchargeables depuis cette fiche de métadonnées. Un fichier "readme" décrit la nomenclature des fichiers et les variables mesurées.

Toute utilisation de ce jeu de données doit citer sa référence: son DOI (https://doi.org/10.12770/aa42cbc1-c0cf-413e-b93d-8d0d1cbb0e06 ) ainsi que les partenaires suivants : Ces travaux sont soutenus par l'OSU-Réunion, Université de Bretagne Occidentale (UBO), Institut Méditerranéen d'Océanologie (MIO) et Université de Delft.</gco:CharacterString>
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            <gco:CharacterString>Références Bibliographiques
- William Bruch W., Cordier E., Floc'h F., Pearson S.G. (2022) Water Level Modulation of Wave Transformation, Setup and Runup over La Saline Fringing Reef. Journal of Geophysical Research - Oceans. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JC018570 .

Localisation des points RS (Reef Slope) et RF (Reef Flat)
RF : Reef Flat station 
LAT = 21.10155°S
LON = 55.24028°E

RS : Reef Slope station 
LAT = 21.10627°S
LON = 55.23804°E

A/ Description des variables "prefix_param_suffix" des données d'observation
nom du fichier correspondant : calhyco2017_lareunion-reef_waterlevels_observations.csv  
exemple : RF_Hs_gw : hauteurs significatives des ondes de gravité sur le platier récifal

1/ Prefix
prefix RS for Reef Slope (observations and model)
prefix RF for Reef Flat (observations and model)

2/ Second part is param among: 
level : totl water column height above sensor [m]
fpeak : peak freqeuncy from spectral analysis
Hrms : RMS wave height [m]
Hs : significant wave height [m]
Tm0m1 : mean wave period (spectral energetic period) [s]
Tm02 : mean wave period (spectral zerocrossing period) [s]
setup : setup [m]
Tide : tidal variations [m]

3/ suffixes : 
_tot for full spectrum
_gw for "gravity waves" part of frequency domain 0.04-0.25 Hz
_ig for "infra-gravity waves" part of frequency domain 0.004-0.04 Hz
_vlf for "very low frequency" part of frequency domain 0.0006-0.004 Hz

B/ Description des variables des données de modélisation
nom du fichier correspondant : calhyco2017_lareunion-reef_waterlevels_xbsbmodel.csv
RFxb_param RSxb_param for numerical modelling with xbeach surf-beat mode
_Hgw : significant wave height in gravity wave domain [m]
_Hig : significant wave height in infra-gravity wave domain [m]
_Hvlf : significant wave height in very low frequency wave domain [m]
_setup and runp in [m]</gco:CharacterString>
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