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Title: Methane release below a tropical hydroelectric dam
Authors: Kemenes, Alexandre
Forsberg, Bruce Rider
Melack, John M.
Keywords: Degassing
Earth Atmosphere
Flow Of Gases
Gas Emissions
Hydroelectric Dams
Methane Emissions
Tropical Reservoirs
Carbon Emission
Hydroelectric Power Plant
Amazon Basin
South America
Issue Date: 2007
metadata.dc.publisher.journal: Geophysical Research Letters
metadata.dc.relation.ispartof: Volume 34, Número 12
Abstract: Tropical reservoirs upstream from hydroelectric dams are known to release significant amounts of methane to the atmosphere. Here we demonstrate that methane emissions downstream from hydroelectric dams can also be large. Emissions of CH4 downstream of Balbina reservoir in the central Amazon basin (Brazil) were calculated from regular measurements of degassing in the outflow of the turbines and downstream diffusive losses. Annual emissions from the reservoir surface and downstream from the dam were 34 and 39 Gg C, respectively. The downstream emission alone represented the equivalent of 3% of all methane released from central Amazon floodplain. Copyright 2007 by the American Geophysical Union.
metadata.dc.identifier.doi: 10.1029/2007GL029479
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