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Improving the analysis of biogeochemical patterns associated with internal waves in the strait of Gibraltar using remote sensing images / Gabriel Navarro in Estuarine, Coastal and Shelf Science, vol 204 (May 2018)  

Public [article]  inEstuarine, Coastal and Shelf Science > vol 204 (May 2018) . - pp 1 - 13 Titre : Improving the analysis of biogeochemical patterns associated with internal waves in the strait of Gibraltar using remote sensing images Type de document : Article/Communication Auteurs : Gabriel Navarro, Auteur ; Jorge Vicent, Auteur ; Isabel Caballero, Auteur ; et al., Auteur Année de publication : 2018 Article en page(s) : pp 1 - 13 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Gibraltar (Royaume-Uni) [Termes IGN] image Sentinel-MSI [Termes IGN] Méditerranée, mer [Termes IGN] vague Résumé : (auteur) High Amplitude Internal Waves (HAIWs) are physical processes observed in the Strait of Gibraltar (the narrow channel between the Atlantic Ocean and the Mediterranean Sea). These internal waves are generated over the Camarinal Sill (western side of the strait) during the tidal outflow (toward the Atlantic Ocean) when critical hydraulic conditions are established. HAIWs remain over the sill for up to 4 h until the outflow slackens, being then released (mostly) towards the Mediterranean Sea. These have been previously observed using Synthetic Aperture Radar (SAR), which captures variations in surface water roughness. However, in this work we use high resolution optical remote sensing, with the aim of examining the influence of HAIWs on biogeochemical processes. We used hyperspectral images from the Hyperspectral Imager for the Coastal Ocean (HICO) and high spatial resolution (10 m) images from the MultiSpectral Instrument (MSI) onboard the Sentinel-2A satellite. This work represents the first attempt to examine the relation between internal wave generation and the water constituents of the Camarinal Sill using hyperspectral and high spatial resolution remote sensing images. This enhanced spatial and spectral resolution revealed the detailed biogeochemical patterns associated with the internal waves and suggests local enhancements of productivity associated with internal waves trains. Numéro de notice : A2018-146 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1016/j.ecss.2018.02.009 Date de publication en ligne : 10/02/2018 En ligne : https://doi.org/10.1016/j.ecss.2018.02.009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89755 [article]