{"title":"Determination of the Nature of Hydrocarbons in the Barents Sea (Verification of Remote Sensing Data)","authors":"I. A. Nemirovskaya, A. Yu. Ivanov","doi":"10.1134/s0001437024010089","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Based on remote sensing data obtained by Sentinel-1A and Sentinel-1B satellites in 2016–2022 and the results of analysis of hydrocarbons (aliphatic—AHCs, and polycyclic aromatic—PAHs) in bottom sediments collected in 2019–2022, the nature of oil slicks in various areas of the Barents Sea has been established. It has been shown that the distribution of oil slicks in coastal areas is greatly influenced by anthropogenic hydrocarbon inflows (mainly from shipping), which is confirmed by elevated AHC concentrations in coastal sediments (up to 73 μg/g) and in the composition of C<sub>org</sub> (up to 3.6%). In the central and northern regions of the sea (in particular, at coordinates 75.2°–75.3° N and 31.5°–31.8° E, station 7105), the grouping of oil slicks is due to natural oil and gas manifestations. This is confirmed by the anomalous concentration of PAHs in the lower horizons of the sediment column, as well as their composition (dominance of 2-methylnaphthalene, a marker of their oil genesis). At the same time, the proportion of light homologues in the composition of alkanes increased, which may indicate their formation in the sedimentary sequence.</p>","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oceanology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s0001437024010089","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0
Abstract
Based on remote sensing data obtained by Sentinel-1A and Sentinel-1B satellites in 2016–2022 and the results of analysis of hydrocarbons (aliphatic—AHCs, and polycyclic aromatic—PAHs) in bottom sediments collected in 2019–2022, the nature of oil slicks in various areas of the Barents Sea has been established. It has been shown that the distribution of oil slicks in coastal areas is greatly influenced by anthropogenic hydrocarbon inflows (mainly from shipping), which is confirmed by elevated AHC concentrations in coastal sediments (up to 73 μg/g) and in the composition of Corg (up to 3.6%). In the central and northern regions of the sea (in particular, at coordinates 75.2°–75.3° N and 31.5°–31.8° E, station 7105), the grouping of oil slicks is due to natural oil and gas manifestations. This is confirmed by the anomalous concentration of PAHs in the lower horizons of the sediment column, as well as their composition (dominance of 2-methylnaphthalene, a marker of their oil genesis). At the same time, the proportion of light homologues in the composition of alkanes increased, which may indicate their formation in the sedimentary sequence.
期刊介绍：
Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.
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