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dc.contributor.authorBoitsov, Stepan
dc.contributor.authorPetrova, V.
dc.contributor.authorJensen, Henning K. B.
dc.contributor.authorKursheva, A.
dc.contributor.authorLitvinenko, I.
dc.contributor.authorChen, Y.
dc.contributor.authorKlungsøyr, Jarle
dc.date.accessioned2011-06-10T12:53:26Z
dc.date.available2011-06-10T12:53:26Z
dc.date.issued2011-06
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/11250/108906
dc.description.abstractSubsurface sediments from a pockmark area in South-Western Barents Sea have been earlier found to contain elevated levels of petroleum-related polycyclic aromatic hydrocarbons. This work describes a comprehensive analysis of various biomarkers, including the highly source-specific hopanes, in a 4.5 m long gravity core from the same area, together with subsurface sediment samples from other areas in the region without pockmarks present (“background samples”). A clear difference between the pockmark gravity core and the background sediment cores was found, both with regard to genesis and the level of transformation of organic matter. A number of indicator parameters, such as methylphenanthrene index (MPI-1), point towards a significantly higher maturity of hydrocarbons in the pockmark core throughout its length as compared to the other sampled locations. Higher contents of microbial hopanoids (hopenes) may indicate the former presence of petroleum. These findings confirm the hypothesis of a natural hydrocarbon source in the deeper strata present in the studied location with pockmarks.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.subjectbiomarkersen_US
dc.subjectbiomarkøreren_US
dc.subjectsedimentsen_US
dc.subjectsedimenteren_US
dc.subjectBarents Seaen_US
dc.subjectBarentshaveten_US
dc.titlePetroleum-related hydrocarbons in deep and subsurface sediments from South-Western Barents Seaen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Basic biosciences: 470::General microbiology: 472en_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.source.pagenumber357-368
dc.source.volume71
dc.source.journalMarine Environmental Research
dc.source.issue5
dc.identifier.doihttp://dx.doi.org/10.1016/j.marenvres.2011.04.003


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