Acoustic investigations of gas “flares” in the Sea of Okhotsk |
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| Authors: | A S Salomatin V I Yusupov |
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| Institution: | (1) Limnological Institute, Siberian Branch of Russian Academy of Sciences, 3 Ulan-Batorskaya St., 664033 Irkutsk, Russia |
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| Abstract: | The results of acoustic investigations of over 250 gas “flares” (GFs) located in the depth range of 160–1400 m in the vicinity
of the northeastern slope of Sakhalin Island are presented. Pronounced features in the GFs distribution by the seabed’s depth
have been identified, which allowed dividing them into four groups corresponding to four depth intervals. The number of GFs
per seabed unit area decreases, and the power of the individual GFs increases with depth. The average methane flux per seabed
unit of area has been estimated for each depth interval. It has been demonstrated that the total quantity of methane emitted
from the seabed in the form of bubbles in the studied area is ∼0.1 million tons per year. |
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