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C-13/C-12 ratio in methane from the flooded Amazon forest (1987)

Blake, Donald R. ; Tyler, Stanley C. ; Rowland, F. Sherwood

In: Other Sources

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Publication Date: 2019-07-12

Description: The C1-C4 hydrocarbon concentrations and the C-13/C-12 ratio in CH4 detected in air samples collected in the Amazon region (3.5 deg S latitude and 5.9 deg W longitude) are analyzed. It is observed that the CH4 concentrations of each sample are enhanced over the background concentration for remote locations, and the C-13/C-12 ratio in this biogenic methane is depleted in C-13 relative to atmospheric CH4. It is concluded, from the C2-C4 hydrocarbon data, that minor yields of C2-C4 hyrocarbons are released coincident with CH4; however, the minor yields do not contribute to the regionally enhanced concentrations of hydrocarbons found in Amazonia and the global atmosphere release of C2-C4 compounds.

Keywords: GEOPHYSICS

Type: Journal of Geophysical Research (ISSN 0148-0227); 92; 1044-104

Format: text

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