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Guerin F., Abril G., Richard S., Burban B., Reynouard C., Seyler Patrick, Delmas R. (2006). Methane and carbon dioxide emissions from tropical reservoirs: Significance of downstream rivers - art. no. L21407. Geophysical Research Letters, 33 (21), art. L21407 [6 p.]. ISSN 0094-8276.

Titre du document
Methane and carbon dioxide emissions from tropical reservoirs: Significance of downstream rivers - art. no. L21407
Année de publication
2006
Type de document
Article référencé dans le Web of Science WOS:000242174900006
Auteurs
Guerin F., Abril G., Richard S., Burban B., Reynouard C., Seyler Patrick, Delmas R.
Source
Geophysical Research Letters, 2006, 33 (21), art. L21407 [6 p.] ISSN 0094-8276
Methane (CH4) and carbon dioxide (CO2) concentrations and water-air fluxes were measured in three tropical reservoirs and their respective rivers downstream of the dams. From reservoirs, CH4 and CO2 flux were in the range of 3 +/- 2 and 254 +/- 392mmol. m(-2).d(-1), respectively. Rivers downstream of dams were significantly enriched in CH4 and CO2 originating from reservoir hypolimnions. From rivers, CH4 and CO2 flux were in the range of 60 +/- 38 and 859 +/- 400 mmol. m(-2).d(-1), respectively. Despite their relatively small surfaces, rivers downstream of dams accounted for a significant fraction ( 9 - 33% for CH4 and 7 - 25% for CO2) of the emissions across the reservoir surfaces classically taken into account for reservoirs. A significant fraction of CH4 appeared to degas at the vicinity of the dam ( turbines and spillways), although it could not be quantified.
Plan de classement
Hydrologie [062] ; Géologie et formations superficielles [064]
Description Géographique
ZONE TROPICALE
Localisation
Fonds IRD
Identifiant IRD
fdi:010080309
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