DOC. CDOM. Anschutz et al 2010. Kim et al. 2013. +++++. Coastal ocean ? Still large ... Zone A : seawater signature. Specific ... Zone B : Freshwater signature.
Degradation state of carbon in groundwaters discharging through a sandy beach Mathilde Couturier1, Fréderike Lemay-Borduas1, Christian Nozais2, Gwénaëlle Chaillou1
1Canada
Research Chair in the Geochemistry of Coastal Hydrogeosystem, 2Biology, Geography and Chemistry Department Université du Québec à Rimouski
Subterranean estuary Groundwater
?
DOC CDOM
Porewater DOM Remineralisation
Anschutz et al 2010 Kim et al. 2013 +++++ Seawater DOC CDOM
Biogeochemical products
Coastal ocean
Still large unkowns concerning the source and the behavior of DOM
2
DOM in subterranean estuaries
3 CDOM Cycling carbon Trace elements Biological activity
Component of DOM that absorbs light
Opticals indexes Amount of CDOM absorption coefficient Quality ratio 254.375 Origin Biological Index and Fluorescence Index
Subterranean estuary Groundwater DOC CDOM
Porewater DOM Remineralisation Biogeochemical products
Seawater DOC CDOM
DOM in subterranean estuaries
Objectives 1) Determine the origin of DOM sources 2) Evaluate the degradation state of the potential DOM exported to coastal ocean
Determine the quality and reactivity of Carbone in the coastal ocean
