Anthropogenic factor and methane emission on the East-Siberian shelf |
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| Authors: | N E Shakhova V A Yusupov A N Salyuk D A Kosmach I P Semiletov |
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| Institution: | 1.Il’ichev Pacific Oceanological Institute, Far East Division,Russian Academy of Sciences,Vladivostok,Russia;2.Pacific Institute of Geography, Far East Division,Russian Academy of Sciences,Vladivostok,Russia;3.International Arctic Research Center of the University of Alaska,Fairbanks,USA |
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| Abstract: | Results of data analysis, based on measurement of atmospheric concentrations of methane in the shallow part of the East Siberian
shelf (ESS) are presented in this work. It was shown that methane emission in the atmosphere is determined not only by natural
factors, but is also sensitive to anthropogenic influences, like the engine mode of a ship. It was determined that the hydraulic
impact, which occurs when starting a ship’s engine after drifting through a shallow, can induce a great methane outbreak in
the atmosphere. The power of these “short-lived” sources can exceed the power of any one deep-water mud volcano. In the shallow
parts of the ESS, the anthropogenic factor can be one of the important factors effecting methane outbreaks in the atmosphere. |
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