Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene
Diatom assemblages were employed to study temporal changes of Siberian river runoff on the Laptev Sea shelf. Using a correlation between freshwater diatoms (%) in core-top sediments and summer surface water salinities from the inner Kara Sea, salinity conditions were reconstructed for a site northea...
Published in: | Paleoceanography |
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AGU (American Geophysical Union)
2003
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Online Access: | https://oceanrep.geomar.de/id/eprint/2581/ https://oceanrep.geomar.de/id/eprint/2581/1/2003_BauchH-Polyakova_Diatom_palo1031.pdf https://doi.org/10.1029/2002PA000847 |
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ftoceanrep:oai:oceanrep.geomar.de:2581 2023-05-15T14:25:48+02:00 Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene Bauch, Henning Polyakova, Yelena I. 2003 text https://oceanrep.geomar.de/id/eprint/2581/ https://oceanrep.geomar.de/id/eprint/2581/1/2003_BauchH-Polyakova_Diatom_palo1031.pdf https://doi.org/10.1029/2002PA000847 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/2581/1/2003_BauchH-Polyakova_Diatom_palo1031.pdf Bauch, H. and Polyakova, Y. I. (2003) Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene. Open Access Paleoceanography, 18 (2). p. 1027. DOI 10.1029/2002PA000847 <https://doi.org/10.1029/2002PA000847>. doi:10.1029/2002PA000847 info:eu-repo/semantics/openAccess Article PeerReviewed 2003 ftoceanrep https://doi.org/10.1029/2002PA000847 2023-04-07T14:46:00Z Diatom assemblages were employed to study temporal changes of Siberian river runoff on the Laptev Sea shelf. Using a correlation between freshwater diatoms (%) in core-top sediments and summer surface water salinities from the inner Kara Sea, salinity conditions were reconstructed for a site northeast of the Lena River Delta (present water depth 32 m) since 9 calendar years (cal) ka. The reconstruction indicate a strong, near-coastal, and river-influenced environment at the site until about 8.6 cal ka. Corroborated by comparison with other proxy records from further to the east, surface salinities increased from 9 to 14 until about 7.4 cal ka, owing to ongoing global sea level rise and synchronous southward shift of the coastline. Although riverine water became less influential at the site since then, salinities still varied between 12.5 and 15, particularly during the last 3.5 kyr. These more recent salinity fluctuations agree well with reconstructions from just north of the Lena Delta, emphasizing the strong linkage between shelf hydrography and riverine discharge patterns in Arctic Siberia. Article in Journal/Newspaper Arctic Arctic Kara Sea laptev Laptev Sea lena delta lena river Siberia OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Kara Sea Laptev Sea Paleoceanography 18 2 n/a n/a |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Diatom assemblages were employed to study temporal changes of Siberian river runoff on the Laptev Sea shelf. Using a correlation between freshwater diatoms (%) in core-top sediments and summer surface water salinities from the inner Kara Sea, salinity conditions were reconstructed for a site northeast of the Lena River Delta (present water depth 32 m) since 9 calendar years (cal) ka. The reconstruction indicate a strong, near-coastal, and river-influenced environment at the site until about 8.6 cal ka. Corroborated by comparison with other proxy records from further to the east, surface salinities increased from 9 to 14 until about 7.4 cal ka, owing to ongoing global sea level rise and synchronous southward shift of the coastline. Although riverine water became less influential at the site since then, salinities still varied between 12.5 and 15, particularly during the last 3.5 kyr. These more recent salinity fluctuations agree well with reconstructions from just north of the Lena Delta, emphasizing the strong linkage between shelf hydrography and riverine discharge patterns in Arctic Siberia. |
format |
Article in Journal/Newspaper |
author |
Bauch, Henning Polyakova, Yelena I. |
spellingShingle |
Bauch, Henning Polyakova, Yelena I. Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
author_facet |
Bauch, Henning Polyakova, Yelena I. |
author_sort |
Bauch, Henning |
title |
Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
title_short |
Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
title_full |
Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
title_fullStr |
Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
title_full_unstemmed |
Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene |
title_sort |
diatom-inferred salinity records from the arctic siverian margin: implications for fluvial runoff patterns during the holocene |
publisher |
AGU (American Geophysical Union) |
publishDate |
2003 |
url |
https://oceanrep.geomar.de/id/eprint/2581/ https://oceanrep.geomar.de/id/eprint/2581/1/2003_BauchH-Polyakova_Diatom_palo1031.pdf https://doi.org/10.1029/2002PA000847 |
geographic |
Arctic Kara Sea Laptev Sea |
geographic_facet |
Arctic Kara Sea Laptev Sea |
genre |
Arctic Arctic Kara Sea laptev Laptev Sea lena delta lena river Siberia |
genre_facet |
Arctic Arctic Kara Sea laptev Laptev Sea lena delta lena river Siberia |
op_relation |
https://oceanrep.geomar.de/id/eprint/2581/1/2003_BauchH-Polyakova_Diatom_palo1031.pdf Bauch, H. and Polyakova, Y. I. (2003) Diatom-inferred salinity records from the Arctic Siverian margin: Implications for fluvial runoff patterns during the Holocene. Open Access Paleoceanography, 18 (2). p. 1027. DOI 10.1029/2002PA000847 <https://doi.org/10.1029/2002PA000847>. doi:10.1029/2002PA000847 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2002PA000847 |
container_title |
Paleoceanography |
container_volume |
18 |
container_issue |
2 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766298256262823936 |