Emissão de metano por reservatórios hidrelétricos amazônicos através de leis de potência / Methane emission of Amazonian hydroelectric reservoirs from Powerlaw relations
Piracicaba; s.n; 2002. 119 p. ilus, tab.
Thesis
in Portuguese
| LILACS
| ID: lil-433542
RESUMO
The purpose of this work is evaluating methane emissions from two Amazonian reservoirs, Tucuruí and Samuel. The analysis considers fluctuations of the reservoir area-height and isotopic measurements and fluxes of d13CH4 acquired in the field, which are influenced by many factors simultaneously, such as winds, atmospheric pressure, oxidation in the water column, and others. Isotopic composition of methane in bubbles indicates that CO2 reduction is a major pathway for methane production in the sediments. The results also show that fluxes are higher in shallow reservoirs than in deeper ones. Using concepts and techniques of fractal theory, fundamentally based on power law functions, and considering a time horizon of 100 years, a model between water level, flux and reservoir area of Tucuruí allowed to estimate methane emission from Tucuruí at about 2,5 ± 2,7 x 10
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Power Plants
/
Amazonian Ecosystem
/
Methane
Type of study:
Prognostic study
Language:
Portuguese
Year:
2002
Type:
Thesis
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