The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf
Rapid warming of the Arctic provokes large-scale degradation of permafrost on land terrestrial and in submarines. A vast amount of remobilized organic matter (OM) is involved in the modern biogeochemical cycle. Understanding of the fate of terrestrial OM moving from the land to the Arctic shelf is e...
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Online Access: | https://doi.org/10.1051/e3sconf/202126608006 https://doaj.org/article/550fccbec5ee4094b78869dc1b12de76 |
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ftdoajarticles:oai:doaj.org/article:550fccbec5ee4094b78869dc1b12de76 2023-05-15T14:50:48+02:00 The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf Oberemok I.A. Gershelis E.V. 2021-01-01T00:00:00Z https://doi.org/10.1051/e3sconf/202126608006 https://doaj.org/article/550fccbec5ee4094b78869dc1b12de76 EN FR eng fre EDP Sciences https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/42/e3sconf_ti2021_08006.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202126608006 https://doaj.org/article/550fccbec5ee4094b78869dc1b12de76 E3S Web of Conferences, Vol 266, p 08006 (2021) Environmental sciences GE1-350 article 2021 ftdoajarticles https://doi.org/10.1051/e3sconf/202126608006 2022-12-31T12:19:09Z Rapid warming of the Arctic provokes large-scale degradation of permafrost on land terrestrial and in submarines. A vast amount of remobilized organic matter (OM) is involved in the modern biogeochemical cycle. Understanding of the fate of terrestrial OM moving from the land to the Arctic shelf is essential for predicting the potential feedback of Arctic ecosystems. In our research, an attempt was made to characterize the modern OM stored in the surface sediments of the Laptev Sea to estimate its composition variability and to identify the OM sources along with the “coastline - outer shelf” profile. Here we discuss the OM features revealed by Rock-Eval pyrolysis (RE) and the distribution of n-alkanes in combination with sediment grain-size analysis. The GC/MS records are directly comparable with RE data tracing the terrestrial OM along with the entire studied profile. However, we observe both a significant decline of terrestrial input and the rise of hydrobiont in the outer shelf zone. We assume that different OM sources may produce different ranges of RE values. Article in Journal/Newspaper Arctic laptev Laptev Sea permafrost Directory of Open Access Journals: DOAJ Articles Arctic Laptev Sea E3S Web of Conferences 266 08006 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
Environmental sciences GE1-350 |
spellingShingle |
Environmental sciences GE1-350 Oberemok I.A. Gershelis E.V. The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
topic_facet |
Environmental sciences GE1-350 |
description |
Rapid warming of the Arctic provokes large-scale degradation of permafrost on land terrestrial and in submarines. A vast amount of remobilized organic matter (OM) is involved in the modern biogeochemical cycle. Understanding of the fate of terrestrial OM moving from the land to the Arctic shelf is essential for predicting the potential feedback of Arctic ecosystems. In our research, an attempt was made to characterize the modern OM stored in the surface sediments of the Laptev Sea to estimate its composition variability and to identify the OM sources along with the “coastline - outer shelf” profile. Here we discuss the OM features revealed by Rock-Eval pyrolysis (RE) and the distribution of n-alkanes in combination with sediment grain-size analysis. The GC/MS records are directly comparable with RE data tracing the terrestrial OM along with the entire studied profile. However, we observe both a significant decline of terrestrial input and the rise of hydrobiont in the outer shelf zone. We assume that different OM sources may produce different ranges of RE values. |
format |
Article in Journal/Newspaper |
author |
Oberemok I.A. Gershelis E.V. |
author_facet |
Oberemok I.A. Gershelis E.V. |
author_sort |
Oberemok I.A. |
title |
The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
title_short |
The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
title_full |
The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
title_fullStr |
The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
title_full_unstemmed |
The hydrocarbon compounds sources in surface sediments of the Laptev Sea shelf |
title_sort |
hydrocarbon compounds sources in surface sediments of the laptev sea shelf |
publisher |
EDP Sciences |
publishDate |
2021 |
url |
https://doi.org/10.1051/e3sconf/202126608006 https://doaj.org/article/550fccbec5ee4094b78869dc1b12de76 |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic laptev Laptev Sea permafrost |
genre_facet |
Arctic laptev Laptev Sea permafrost |
op_source |
E3S Web of Conferences, Vol 266, p 08006 (2021) |
op_relation |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/42/e3sconf_ti2021_08006.pdf https://doaj.org/toc/2267-1242 2267-1242 doi:10.1051/e3sconf/202126608006 https://doaj.org/article/550fccbec5ee4094b78869dc1b12de76 |
op_doi |
https://doi.org/10.1051/e3sconf/202126608006 |
container_title |
E3S Web of Conferences |
container_volume |
266 |
container_start_page |
08006 |
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1766321851945975808 |