FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3012372164> ?p ?o ?g. }

• W3012372164 abstract "Abstract The type and flux of organic carbon (OC) delivered from the continents to the sea can both influence, and be influenced by, climate change on regional and global scales. In order to develop a more complete view of OC delivery in the climatically sensitive Arctic region, we measured the stable carbon and radiocarbon isotopic signatures of individual lipid biomarkers and products of kerogen pyrolysis from the surficial sediments of several sites on the Mackenzie Shelf and adjacent slope of the Beaufort Sea. Even carbon numbered fatty acids exhibit a trend of increasing 14C age with increasing chain length, from modern values for the nC14–nC18 homologues to several thousand years old for those ≥ nC24. Such depleted 14C values for longer-chain fatty acids likely reflect supply of vascular plant OC that has been pre-aged on the continents for several millennia prior to delivery to the Beaufort Sea. Their corresponding δ13C values support a C3 land plant source. The molecular distributions and 14C and 13C signatures of solvent-extractable alkanes point to at least two sources: higher plant leaf waxes and a 14C-‘dead’ component likely derived from erosion of organic-rich sedimentary rocks exposed within the Mackenzie River drainage basin. The δ13C and Δ14C values of n-hydrocarbon pyrolysis products from the corresponding demineralized sediments also suggest a mixed supply of ancient kerogen and pre-aged vascular plant-derived precursors to the Beaufort Sea. On a bulk level, the trend in sedimentary OC contents, C/N ratios, and δ13C values point to an overall decrease in the terrigenous input (mainly from the Mackenzie River) with increasing distance offshore, whereas bulk Δ14C measurements exhibit no trend suggesting a somewhat constant pre-aged component. A coupled molecular isotopic mass balance approach based on the lipid δ13C and Δ14C signatures is used to construct a budget of terrestrial, marine, and petrogenic OC burial on the shelf. Results indicate that roughly 40–50% of the carbon currently being buried in the Beaufort Sea is derived from the weathering of ancient sedimentary rock. The balance is composed of marine and terrestrial input, supporting the qualitative description of OC sources given by the bulk and molecular patterns above. This suggests that mass balances utilizing the δ13C and Δ14C signatures of biomarkers as endmembers can be used to semi-quantitatively deconvolve multiple sources of organic carbon in marine sediments." @default.
• W3012372164 created "2020-03-23" @default.
• W3012372164 creator A5006196136 @default.
• W3012372164 creator A5020797893 @default.
• W3012372164 creator A5043983686 @default.
• W3012372164 creator A5072255354 @default.
• W3012372164 creator A5089327434 @default.
• W3012372164 date "2005-12-01" @default.
• W3012372164 modified "2023-09-24" @default.
• W3012372164 title "Constraints on the Origin of Sedimentary Organic Carbon in the Beaufort Sea from Coupled Molecular 13C and 14C Measurements" @default.
• W3012372164 hasPublicationYear "2005" @default.
• W3012372164 type Work @default.
• W3012372164 sameAs 3012372164 @default.
• W3012372164 citedByCount "0" @default.
• W3012372164 crossrefType "journal-article" @default.
• W3012372164 hasAuthorship W3012372164A5006196136 @default.
• W3012372164 hasAuthorship W3012372164A5020797893 @default.
• W3012372164 hasAuthorship W3012372164A5043983686 @default.
• W3012372164 hasAuthorship W3012372164A5072255354 @default.
• W3012372164 hasAuthorship W3012372164A5089327434 @default.
• W3012372164 hasConcept C100134115 @default.
• W3012372164 hasConcept C104779481 @default.
• W3012372164 hasConcept C107872376 @default.
• W3012372164 hasConcept C109007969 @default.
• W3012372164 hasConcept C111368507 @default.
• W3012372164 hasConcept C121332964 @default.
• W3012372164 hasConcept C126559015 @default.
• W3012372164 hasConcept C127313418 @default.
• W3012372164 hasConcept C130452526 @default.
• W3012372164 hasConcept C140205800 @default.
• W3012372164 hasConcept C151730666 @default.
• W3012372164 hasConcept C156398188 @default.
• W3012372164 hasConcept C158787203 @default.
• W3012372164 hasConcept C159985019 @default.
• W3012372164 hasConcept C17409809 @default.
• W3012372164 hasConcept C178790620 @default.
• W3012372164 hasConcept C185592680 @default.
• W3012372164 hasConcept C192562407 @default.
• W3012372164 hasConcept C22117777 @default.
• W3012372164 hasConcept C2779196632 @default.
• W3012372164 hasConcept C2780173749 @default.
• W3012372164 hasConcept C2781451532 @default.
• W3012372164 hasConcept C48743137 @default.
• W3012372164 hasConcept C518008717 @default.
• W3012372164 hasConcept C62520636 @default.
• W3012372164 hasConcept C6494504 @default.
• W3012372164 hasConceptScore W3012372164C100134115 @default.
• W3012372164 hasConceptScore W3012372164C104779481 @default.
• W3012372164 hasConceptScore W3012372164C107872376 @default.
• W3012372164 hasConceptScore W3012372164C109007969 @default.
• W3012372164 hasConceptScore W3012372164C111368507 @default.
• W3012372164 hasConceptScore W3012372164C121332964 @default.
• W3012372164 hasConceptScore W3012372164C126559015 @default.
• W3012372164 hasConceptScore W3012372164C127313418 @default.
• W3012372164 hasConceptScore W3012372164C130452526 @default.
• W3012372164 hasConceptScore W3012372164C140205800 @default.
• W3012372164 hasConceptScore W3012372164C151730666 @default.
• W3012372164 hasConceptScore W3012372164C156398188 @default.
• W3012372164 hasConceptScore W3012372164C158787203 @default.
• W3012372164 hasConceptScore W3012372164C159985019 @default.
• W3012372164 hasConceptScore W3012372164C17409809 @default.
• W3012372164 hasConceptScore W3012372164C178790620 @default.
• W3012372164 hasConceptScore W3012372164C185592680 @default.
• W3012372164 hasConceptScore W3012372164C192562407 @default.
• W3012372164 hasConceptScore W3012372164C22117777 @default.
• W3012372164 hasConceptScore W3012372164C2779196632 @default.
• W3012372164 hasConceptScore W3012372164C2780173749 @default.
• W3012372164 hasConceptScore W3012372164C2781451532 @default.
• W3012372164 hasConceptScore W3012372164C48743137 @default.
• W3012372164 hasConceptScore W3012372164C518008717 @default.
• W3012372164 hasConceptScore W3012372164C62520636 @default.
• W3012372164 hasConceptScore W3012372164C6494504 @default.
• W3012372164 hasLocation W30123721641 @default.
• W3012372164 hasOpenAccess W3012372164 @default.
• W3012372164 hasPrimaryLocation W30123721641 @default.
• W3012372164 hasRelatedWork W1985053863 @default.
• W3012372164 hasRelatedWork W1995085880 @default.
• W3012372164 hasRelatedWork W1995918853 @default.
• W3012372164 hasRelatedWork W2038504962 @default.
• W3012372164 hasRelatedWork W2052210986 @default.
• W3012372164 hasRelatedWork W2052749319 @default.
• W3012372164 hasRelatedWork W2058114772 @default.
• W3012372164 hasRelatedWork W2061544918 @default.
• W3012372164 hasRelatedWork W2100484798 @default.
• W3012372164 hasRelatedWork W2128429941 @default.
• W3012372164 hasRelatedWork W2155228439 @default.
• W3012372164 hasRelatedWork W2385413350 @default.
• W3012372164 hasRelatedWork W2482332404 @default.
• W3012372164 hasRelatedWork W2489869364 @default.
• W3012372164 hasRelatedWork W2559627655 @default.
• W3012372164 hasRelatedWork W2744152832 @default.
• W3012372164 hasRelatedWork W2941261374 @default.
• W3012372164 hasRelatedWork W3136881258 @default.
• W3012372164 hasRelatedWork W3175456170 @default.
• W3012372164 hasRelatedWork W405780417 @default.
• W3012372164 hasVolume "2005" @default.
• W3012372164 isParatext "false" @default.
• W3012372164 isRetracted "false" @default.
• W3012372164 magId "3012372164" @default.
• W3012372164 workType "article" @default.