Classification of anomalous methane fields in the Sea of Okhotsk

P(論文) An original classification of anomalous methane fields according to the vertical structure of the water column in the Sea of Okhotsk is proposed. Basic types of anomalous methane fields are described: penetrating, near-bottom, deep, intermediate, subsurface, surface, and combined. Anomalous me...

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Bibliographic Details
Main Authors: Shakirov,Renat B., Obzhirov,Anatoly I., Salyuk,Anatoly N., Biebow,Nicole, Terekhova,Valeriya E., Tsunogai,Urumu, Shoji,Hitoshi
Language:English
Published: National Institute of Polar Research 2005
Subjects:
anomalous and background methane fields
water mass
methane venting
hydrocarbon accumulations
methane hydrates
Okhotsk
Polar meteorology and glaciology
Online Access:https://nipr.repo.nii.ac.jp/record/2988/files/KJ00003656744.pdf
https://doi.org/10.15094/00002988
https://nipr.repo.nii.ac.jp/records/2988
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Summary:P(論文) An original classification of anomalous methane fields according to the vertical structure of the water column in the Sea of Okhotsk is proposed. Basic types of anomalous methane fields are described: penetrating, near-bottom, deep, intermediate, subsurface, surface, and combined. Anomalous methane concentrations are greater than background values, sometimes by 1-3 orders(up to 30000nl/l above methane hydrates). Spatial and quantitative varieties of anomalous methane fields have genetic relations with different hydrocarbon sources. These varieties suggest a high permeability of active fault zones and geochemical activity in marginal areas, especially along the western Sea of Okhotsk. departmental bulletin paper

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