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Décomposition géochimique de l'hydrogramme de crue sur un petit bassin versant guyanais (Piste Saint-Elie, dispositif ECEREX, ORSTOM-CTFT, Guyane française)

Abstract : Intensive sampling of rainfall, soil water and runoff was carried out in a tropical forest on one small but highly responsive catchment in French Guiana. A geochemical hydrograph separation, based on 180 and hydrochemical tracers, was performed to separate streamflow into subsurface quick flow, mixing zone and groundwater slow flow contributions. Soil water (surface and deep layers) plays a significant role in the streamwater chemistry generation. With a few reasonable assumptions, a two or three-component model accommodating contributions from the different sources can explain the temporal variation of the geochemical tracers observed in the streamflow response.
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https://hal.inrae.fr/hal-02771374
Contributor : Migration Prodinra <>
Submitted on : Thursday, June 4, 2020 - 12:17:08 PM
Last modification on : Tuesday, September 7, 2021 - 3:34:26 PM

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  • HAL Id : hal-02771374, version 1
  • PRODINRA : 128830

Citation

Thierry Bariac, Antoine Millet, B. Ladouche, R. Mathieu, C. Grimaldi, et al.. Décomposition géochimique de l'hydrogramme de crue sur un petit bassin versant guyanais (Piste Saint-Elie, dispositif ECEREX, ORSTOM-CTFT, Guyane française). L'hydrologie tropicale : géoscience et outil pour le développement, Office de la Recherche Scientifique et Technique Outre Mer (ORSTOM). FRA., May 1995, Paris, France. ⟨hal-02771374⟩

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