@article{fdi:010037596, title = {{M}orphology, hydrography and sediment dynamics in a mangrove estuary : the {K}onkoure {E}stuary, {G}uinea}, author = {{C}apo, {S}. and {S}ottolichio, {A}. and {B}renon, {I}. and {C}astaing, {P}. and {F}erry, {L}uc}, editor = {}, language = {{ENG}}, abstract = {{T}he {K}onkoure {E}stuary in the {R}epublic of {G}uinea is a poorly understood atypical mangrove system. {S}ediment dynamics in tropical estuaries are controlled by a combination of processes including river discharge, morphology, salinity, erosion and deposition processes, the settling of mud, physico-chemical processes and mangrove swamps. {H}ere we present a consistent set of data aimed at characterising the estuary and thus, increasing our understanding of tropical systems, as well as studying the impact of human intervention in the region. {W}ater elevations, current measurements, salinity, suspended sediment concentrations, bathymetry and sediment cover are presented following a 3 year survey of the {K}onkoure {E}stuary. {H}ere we provide conclusive evidence that the {L}ower {K}onkoure is a shallow, funnel shaped, mesotidal, mangrove-fringed, tide dominated estuary, well mixed during low river discharge. {T}he estuary becomes stratified during high river flows and spring tides whereas a salt wedge appears during neap tides. {T}he {K}onkoure {E}stuary has been described as hypersynchronous, and has three terminal outlets, two of which are landward-directed, attesting to a tidal pumping effect, while the third one is seaward-directed, and is controlled by the mangrove. {T}he suspended matter is transported by the tidal effect within the middle estuary and is therefore trapped in the {T}urbidity {M}aximum zone ({TMZ}). {T}he location of the {TMZ} is river-controlled and is correlated with residual currents but not with salinity front. {A} dam, constructed 130 km upstream, impacts on the hydrodynamics, and reduces the salinity intrusion by about 25%. {I}t causes an increased low river discharge whereas its efficiency over high river flows is unclear. (c) 2006 {P}ublished by {E}lsevier {B}.{V}.}, keywords = {tide dominated estuary ; mesotidal ; {T}urbidity {M}aximum ; hydrodynamics ; mangrove ; dam impact ; {G}uinea}, booktitle = {}, journal = {{M}arine {G}eology}, volume = {230}, numero = {3-4}, pages = {199--215}, ISSN = {0025-3227}, year = {2006}, DOI = {10.1016/j.margeo.2006.05.003}, URL = {https://www.documentation.ird.fr/hor/fdi:010037596}, }