Monitoring of Methane Bubble Seepage and Hydrological Parameters in Laspi Bay (Crimea)

The work is dedicated to the study of the temporal variability of shallow methane seepage activity in the coastal area of Laspi Bay and the high-frequency monitoring of daily dynamics of hydrological parameters on this site. The paper presents the results obtained during the summer months of 2016, 2...

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Bibliographic Details
Published in:Moscow University physics bulletin 2023-08, Vol.78 (4), p.571-577
Main Authors: Budnikov, A. A., Ivanova, I. N., Khurchak, A. I., Malakhova, T. V.
Format: Article
Language:English
Subjects:
Coastal zone
Dissolved oxygen
Emissions
Mathematical and Computational Physics
Methane
Monitoring
Oxygen content
Parameters
Physics
Physics and Astronomy
Seepage
Theoretical
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Summary:The work is dedicated to the study of the temporal variability of shallow methane seepage activity in the coastal area of Laspi Bay and the high-frequency monitoring of daily dynamics of hydrological parameters on this site. The paper presents the results obtained during the summer months of 2016, 2018–2021, and in early February 2023. Using the passive acoustic method, it is shown that the intensity and periodicity of bubble gas emissions from individual seep sources can vary throughout the day and from season to season. It is found that the active seepage area exhibits drop in dissolved oxygen content and saturation compared to a distant (background) area. Moments of sharp decrease in oxygen content, not accompanied by changes in temperature and other hydrological parameters, are noted.
ISSN:0027-1349
1934-8460
DOI:10.3103/S0027134923040057