What is it about?
Geological gas seepage in petroleum-bearing sedimentary basins is an important natural source of atmospheric methane. In methane budget models, geological emissions are generally considered constant over time, not affecting decadal atmospheric methane changes.
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Why is it important?
we report the case of a considerable sub-decadal variation of methane seepage from one of the largest thermogenic gas seep sites in Europe, Katakolo Harbour (Western Peloponnese, Greece).
Perspectives
We estimate that if similar short-term variations of emission factor occur in large seepage areas worldwide, the global geological methane emission can significantly change, contributing to decadal changes of atmospheric methane budget.
Dr Giancarlo Ciotoli
National research council of Italy
Read the Original
This page is a summary of: Increased methane emission from natural gas seepage at Katakolo Harbour (Western Greece), Applied Geochemistry, May 2020, Elsevier,
DOI: 10.1016/j.apgeochem.2020.104578.
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