Hydrogeochemical features and temperature regime of the Lake Baikal bottom zone caused by natural hydrocarbon migration processes
https://doi.org/10.52349/0869-7892_2023_95_54-70
Abstract
The paper describes features of hydrogeochemical composition of bottom waters and temperature regime in the bed zone of Lake Baikal. Estimated coefficient or temperature gradient is proposed, which allows the analysis of the temperature regime, regardless of the depth of sampling of bottom water and soil. It is identified that objects of natural hydrocarbon migration and near-bottom hydrogeochemical anomalies are accompanied by anomalous values of the temperature gradient. The obtained results suggest that the destruction of gas hydrate with active release of methane occurs because of local bottom heating. The processes are accompanied by active substance mobilization and its involvement in migration. The temperature regime in the northern basin of the lake differs from the rest of the lake that may indicate the absence of near-bottom occurrences of gaseous crystalline hydrate in this part of the lake.
About the Authors
V. A. Shakhverdov
A. P. Karpinsky Russian Geological Research Institute
Russian Federation
Russian Federation
Shakhverdov Vadim Azimovich – Candidate of Geological and Mineralogical Sciences, Leading Researcher
74 Sredny Prospect, St. Petersburg, 199106
M. V. Shakhverdova
A. P. Karpinsky Russian Geological Research Institute
Russian Federation
Russian Federation
Shakhverdova Marina Vasil’evna – Engineer
74 Sredny Prospect, St. Petersburg, 199106
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Review
For citations:
Shakhverdov V.A., Shakhverdova M.V. Hydrogeochemical features and temperature regime of the Lake Baikal bottom zone caused by natural hydrocarbon migration processes. Regional Geology and Metallogeny. 2023;(95):54-70. (In Russ.) https://doi.org/10.52349/0869-7892_2023_95_54-70
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