Methane from BP spill goes missing
Methane, the predominant hydrocarbon produced by the BP blowout last year, has all but vanished from Gulf of Mexico waters, a new study reports — presumably eaten up by marine bacteria. That hadn’t been expected to happen for years.
Two-thirds of the hydrocarbons released by the BP accident were forms of natural gas: largely methane, ethane and propane. While Gulf microbes quickly began devouring the larger gas molecules, they initially left tiny methane — which accounted for an estimated 87.5 percent of the gas initially emitted — largely untouched.
Some of the authors of the new paper had reported in the Oct. 8 Science finding almost no microbial breakdown of BP methane in June, about a month and a half into the 83-day gusher.
Rates of biodegradation in subsea plumes, where this gas had been accumulating, “indicated methane would persist for many, many years, if not almost a decade,” observes John Kessler, a chemical oceanographer at Texas A&M University in College Station and an author of that earlier report.
Lees verder: http://www.sciencene...ll_goes_missing
Bron: Science news
Methane from bp spill goes missing
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