Mecafloc (volet 1) : mécanismes de floculation
Workshop "Au fil de l'eau", Nouméa, NCL, 17-/09/2019 - 18/09/2019
Dynamics of trace metals in a shallow coastal ecosystem : insights from the Gulf of Gabès (southern Mediterranean Sea)
Coastal areas are sites of discharge of anthropogenic compounds, such as trace metals. In seawater, trace metals have a strong affinity for particulate organic matter or clay mineral and tend to accumulate in sediments. However, natural events and human activities can cause disturbances in surface sediments involving modification of chemical balanc...
Sedimentary evolution and ecosystem change in Ahémé lake, south-west Benin / Water quality and sediment transport issues...
Tropical moist ecosystems, such as Ahémé lake, south-west Benin, are increasingly marked by water degradation, linked with the activities of increasing riparian populations. The objective of this study is to analyze sedimentary dynamics and its influence on the changing ecosystem of Ahémé lake from 1961–2010. Data used to carry out the study are re...
Suspended sediment source and propagation duringmonsoon events across nested sub-catchments with contrasted land uses in...
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Study region: Houay Xon catchment in northern Laos.Study focus: Because agricultural headwater catchments of SE Asia are prone to erosion anddeliver a significant proportion of the total suspended sediment supply to major rivers andfloodplains, the potential sources of sediments and their dynamics were studied for twosuccessive storm flow events in...
Evolution sédimentologique et dynamique des charges solides dans l'hydrosystème fluvio-lagunaire du sud-ouest du Bénin /...
Sediment dynamics from the summit to the sea
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Formation of mountain ranges results from complex coupling between lithospheric deformation, mechanisms linked to subduction and surface processes: weathering, erosion, and climate. Today, erosion of the eastern Andean cordillera and sub-Andean foothills supplies over 99% of the sediment load passing through the Amazon Basin. Denudation rates in th...
L'eau à découvert
L'eau à découvert
Un lac d'eau douce au coeur du Sahel / Atlas du lac Tchad
Les principaux apports en eau sont constitués par les rivières qui alimentent le lac et par les précipitations qui tombent directement sur celui-ci. Les teneurs en éléments dissous de ces apports dépendent de la nature et de l'histoire géologique du bassin versant ainsi que de sa position géographique vis-à-vis des océans. Les flux sortants dépende...
L'eau à découvert
