@article{fdi:010046339,
  title = {{T}idal sediment transport versus freshwater flood events in the {K}onkoure {E}stuary, {R}epublic of {G}uinea},
  author = {{C}apo, {S}. and {B}renon, {I}. and {S}ottolichio, {A}. and {C}astaing, {P}. and {L}e {G}oulven, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n comparison to their temperate counterparts, sediment processes in tropical estuaries are poorly known and especially in {A}frican ones. {T}he hydrodynamics of such environments is controlled by a combination of multiple processes including morphology, salinity, mangrove vegetation, tidal processes, river discharge, settling and erosion of mud and by physico-chemical processes as well as sediment dynamics. {T}he aim of this study is to understand the sediment processes in this transitional stage of the estuary when the balance between river discharges and marine processes is reversing. {S}tudying the hydrodynamics and sediment dynamics of the {K}onkoure {E}stuary has recently been made possible thanks to new data on bathymetry, sedimentary cover, salinity, water elevations, and current velocities. {T}he {L}ower {K}onkoure is a shallow, funnel shaped, mesotidal mangrove-fringed, tide-dominated estuary, well mixed during low river discharge and stratified during high river discharge. {T}he {K}onkoure {E}stuary is turbid despite the small amount of terrestrial input and its residual velocity at the mouth during low river discharges, landwards for two of the three branches, suggests a landward migration by tidal pumping of the suspended particulate matter. {A} {T}urbidity {M}aximum {Z}one ({TMZ}) is identified for typical states of the estuary with regard to fluvial and tidal components. {S}uspended sediment transport during a transitional stage between the rainy and dry seasons is known thanks to current velocity and {S}uspended {S}ediment {C}oncentration ({SSC}) measurements taken in {N}ovember 2003. {T}he {R}ichardson layered number calculation assesses that turbulence is the major mixing process in the water column, at least during the flood and ebb stages, whereas stratification occurs during the slack water periods. {T}idal currents generate bottom erosion, and turbulence mixes the suspended sediment throughout the water column. {A}s a result, a net sediment input is calculated from the western {K}onkoure outlet for two consecutive tidal cycles. {D}espite the net water export, almost 300 tons per tide reach the estuary through this outlet, for a moderate river flow. {C}rown {C}opyright ({C}) 2009 {P}ublished by {E}lsevier {L}td. {A}ll rights reserved.},
  keywords = {{T}idal pumping ; {M}esotidal estuary ; {H}ydrodynamics ; {S}ediment dynamics ; {R}epublic of {G}uinea},
  booktitle = {},
  journal = {{J}ournal of {A}frican {E}arth {S}ciences},
  volume = {55},
  numero = {1-2},
  pages = {52--57},
  ISSN = {1464-343{X}},
  year = {2009},
  DOI = {10.1016/j.jafrearsci.2009.01.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010046339},
}