FN Archimer Export Format PT J TI Satellite survey of seasonal trophic status and occasional anoxic 'malaigue' crises in the Thau lagoon using MERIS images BT AF MINGHELLI-ROMAN, Audrey LAUGIER, Thierry POLIDORI, Laurent MATHIEU, Sandrine LOUBERSAC, Lionel GOUTON, Pierre AS 1:1;2:2;3:3;4:4;5:2;6:1; FF 1:;2:PDG-RBE-LEADNC;3:;4:;5:PDG-ODE-LITTORAL-LERLR;6:; C1 Univ Bourgogne, UMR CNRS 5158, LE2I, F-21078 Dijon, France. IFREMER, LER LR, F-34203 Sete, France. ESGT, CNAM, F-72000 Le Mans, France. Thales Alenia Space, F-06156 Cannes La Bocca, France. C2 UNIV BOURGOGNE, FRANCE IFREMER, FRANCE ESGT, FRANCE THALES ALENIA SPACE, FRANCE SI SAINT VINCENT SETE SE PDG-RBE-LEADNC PDG-ODE-LITTORAL-LERLR IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 1.117 TC 10 UR https://archimer.ifremer.fr/doc/00032/14283/11608.pdf LA English DT Article AB The Thau lagoon, located in southern France, suffers episodically from anoxic crises locally known as 'malaigue'. Such crises mostly occur under warm conditions, low winds leading to a strong eutrophication of the lagoon. The development of a sulphur bacterium sometimes gives locally to the waters a 'milky turquoise' appearance and leads to shellfish mortality. One of the indicators of the eutrophication status of the lagoon can be surveyed by the chlorophyll product provided by remote sensing images such as Medium Resolution Imaging Spectrometer (MERIS). In this paper we compare chl2 (or algal2) estimations provided by MERIS level 2 products and the ground measurements of chlorophyll a concentrations in water and we propose a linear correction of the chl2 MERIS product. The corrected chl2 estimations obtained over four years are analysed to understand the seasonal evolution of the trophic status of the Thau lagoon. We also study the influence of the anoxic crises of summers 2003 and 2006 on the chl2 estimations and we find a strong correlation between chl2 and the oxygen percentage at 1 m depth (0.70 for measurements in summers 2003 and 2006). PY 2011 SO International Journal Of Remote Sensing SN 0143-1161 PU Taylor & Francis Ltd VL 32 IS 4 UT 000288065100001 BP 909 EP 923 DI 10.1080/01431160903485794 ID 14283 ER EF