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            <gco:CharacterString>Etude "Identification des zones à risque" conduite par le CEVA, disponible sur https://www.ceva-algues.com/document/rapport-izar/

L’analyse a été réalisée sur des mailles fines, de 25 m de côté. Pour chaque maille est calculée l’occurrence en tenant compte de la superficie du dépôt en putréfaction dans chaque maille (si une maille est intégralement dans une zone en putréfaction pour chaque date son occurrence sera de 9, mais elle sera de 4.5 si cette maille est concernée un inventaire sur 2 ou alors si c’est uniquement la moitié de la maille qui est couverte lors de chaque inventaire). Ces cartes permettent en plus des cartes du cumul des zones putréfiantes de percevoir les zones qui sont le plus souvent concernées, des zones touchées plus épisodiquement.
• 9 observations ponctuelles ont été réalisées (4 sur2008-2010 puis 5 sur 2016-2019)
• Les dates de survols analysés ont été retenues parce qu’elles semblaient présenter le plus de situation de putréfaction ; cependant cette carte ne peut prétendre à l’exhaustivité, les phénomènes de putréfactions pouvant être très ponctuels et limités dans le temps.</gco:CharacterString>
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