Jean-Jacques BRAUN

Critical Zone, biogeochemistry, environment

IRD Senior Scientist

Address: IRD-Cameroun BP1857 Yaoundé – Cameroun

Phone: +237 690 478 719 (Mob.)
E-mail: jean-jacques.braun|DONTWANTSPAM|@ird.fr

ORCID

Main fields of research and expertise

  • Mass balance and transfer processes in tropical ecosystems: from the small experimental watershed to the large river basin
  • Geochemical tracers of weathering and hydrological processes in the Critical Zone
  • Climatic, anthropogenic, and tectonic forcing on chemical and physical weathering processes – impact of silicate weathering on atmospheric CO2 consumption
  • Metal cycling in soils (lanthanides, actinides, …)

Selected publications

Braun, J.‐J., Riotte, J., Battacharya, S., Violette, A., Oliva, P., Prunier, J., et al. (2018) REY‐Th‐U dynamics in the critical zone: Combined influence of reactive bedrock accessory minerals, authigenic phases, and hydrological sorting (Mule Hole watershed, South India). Geochemistry, Geophysics, Geosystems, 19. https://doi.org/10.1029/2018GC007453

Braun, J.‐J., Riotte, J., Battacharya, S., Violette, A., Prunier, J., Bouvier, V., … Subramanian, S. (2017) REY‐Th‐U solute dynamics in the critical zone: Combined influence of chemical weathering, atmospheric deposit leaching, and vegetation cycling (mule hole watershed, South India). Geochemistry, Geophysics, Geosystems, 18, 4409–4425. doi.org/10.1002/2017GC007158

Braun, J.-J., Marechal, J.-C., Riotte, J., Boeglin, J.-L., Bedimo Bedimo, J.-P., Ndam Ngoupayou, J.R., Nyeck, B., Robain, H., Sekhar, M., Audry, S., Viers, J. (2012) Elemental weathering fluxes and saprolite production rate in a Central African lateritic terrain (Nsimi, South Cameroon). Geochimica et Cosmochimica Acta 99, 243-270, doi.org/10.1016/j.gca.2012.09.024

Violette, A., Godderis, Y., Marechal, J.C., Riotte, J., Oliva, P., Kumar, M.S.M., Sekhar, M., Braun, J.J. (2010) Modelling the chemical weathering fluxes at the watershed scale in the Tropics (Mule Hole, South India): Relative contribution of the smectite/kaolinite assemblage versus primary minerals. Chemical Geology 277, 42-60, doi.org/10.1016/j.chemgeo.2010.07.009

Braun, J. J., Descloitres, M., Riotte, J., Fleury, S., Barbiero, L., Boeglin, J. L., Violette, A., Lacarce, E., Ruiz, L., Sekhar, M., Kumar, M. S. M., Subramanian, S., and Dupre, B. (2009) Regolith mass balance inferred from combined mineralogical, geochemical and geophysical studies: Mule Hole gneissic watershed, South India. Geochimica Et Cosmochimica Acta 73, 935-961, doi.org/10.1016/j.gca.2008.11.013

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