| Autor: |
A. O. Kholmogorov, N. S. Syrbu, R. B. Shakirov |
| Jazyk: |
English<br />Russian |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Геодинамика и тектонофизика, Vol 13, Iss 3 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2078-502X |
| DOI: |
10.5800/GT-2022-13-3-0642 |
| Popis: |
A spatial distribution of methane dissolved in sea water is a critical but poorly understood factor in the context of seismic activity. Based on the results of the RV AKADEMIK OPARIN integrated geological-geophysical expedition (September 21 – October 31, 2017), this paper deals with the regularities of methane concentration variability in the surface layer of the Sea of Japan: the average growth and the average growth period were 70 % and 10 h, respectively, after each earthquake whereas a decrease in methane concentration in the sea water was 10–30 % 2–4 h before a seismic event. A decrease in methane concentration occurs irrespectively of the depth of an earthquake. The results obtained show good agreement with the published data and gaseous-geochemical monitoring materials, thus making it possible to associate seismic-related gaseous-geochemical regime not only with gas-saturated sediments but also with the water column of the Japan Basin (Sea of Japan). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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