@article{fdi:010079860,
  title = {{T}emporal variability of sediments, dissolved solids and dissolved organic matter fluxes in the {C}ongo river at {B}razzaville/{K}inshasa},
  author = {{N}'{K}aya, {G}. {D}. {M}. and {O}range, {D}idier and {P}adou, {S}. {M}. {B}. and {D}atok, {P}. and {L}araque, {A}lain},
  editor = {},
  language = {{ENG}},
  abstract = {{F}or three decades, the solid and dissolved fluxes of the {C}ongo {R}iver have been regularly monitored on a monthly basis, despite 12 years of deficiencies (1994-2005). {T}wo programs successively carried out these follow-ups: {PEGI}/{GBF} (1987-1993) and {SO} {HYBAM} (2006-2017), upstream and downstream, respectively, of the {M}alebo {P}ool near {B}razzaville, the main hydrometric station of the {C}ongo {R}iver. {T}he objective of this study is to examine the temporal dynamic of {TSS}, {TDS} and {DOC}, to explore how these descriptors change over time. {C}omparison with the two time programs will shed more light on how these descriptors are related to discharge. {A}fterward, we then find a relationship between total {TSS} in the water column and that measured in surface for eventual estimation of {TSS} by remote sensing. {I}n the last decade, compared to the {PEGI}/{GBF} period, the discharge of the {C}ongo {R}iver was mainly marked by a 4% increase, leading to a significant change on {TDS} and {DOC} behaviors. {T}he {TSS} was quite stable (from 8.2 and 9.3 t km(-2)yr(-1)) due to the low physical erosion well known in this region. {T}he {TDS} concentrations decreased slightly, by a simple dilution effect. {H}owever, the mineral dissolved fluxes (from 11.6 and 10.1 t km(-2)yr(-1)) due to the chemical weathering and atmospheric inputs still predominate over the solid fluxes. {T}herefore, there was no radical change in the monthly geochemical regime of {C}ongo {R}iver {B}asin ({CRB}) during these last 30 years. {C}ontrariwise, the {DOC} concentration marking the biogeochemical processes significantly increased, from 9.0+/-3.0 mg {L}(-1)to 12.7+/-5.0 mg {L}-1, due to more flooding events in the central part of the {CRB}. {T}he change for the {DOC} fluxes is more relevant, with an increase of 45% between the two studied periods, from 11.1 x 10(6)to 16.2 x 10(6)t yr(-1). {T}his highlights the continuous and actual importance of the "{C}uvette {C}entrale" in the heart of the {CRB} for dissolved organic matter transport by the {C}ongo {R}iver.},
  keywords = {discharge ; {TSS} ; {TDS} ; {DOC} ; matter fluxes ; {C}ongo {R}iver ; {CONGO} ; {BRAZZAVILLE} ; {KINSHASA} ; {REPUBLIQUE} {DEMOCRATIQUE} {DU} {CONGO} ; {CONGO} {COURS} {D}'{EAU} ; {CONGO} {BASSIN}},
  booktitle = {},
  journal = {{G}eosciences},
  volume = {10},
  numero = {9},
  pages = {341 [ 19 ]},
  year = {2020},
  DOI = {10.3390/geosciences10090341},
  URL = {https://www.documentation.ird.fr/hor/fdi:010079860},
}