Lipid biomarker data in sediment core from Chukchi Sea
The Chukchi Sea, one of the largest shelf seas, plays an important role in biogeochemical cycle and climate change in high latitude North Hemisphere. Here we examined a variety of lipid biomarkers in a sediment core (ARC-R09) collected from central Chukchi Sea to reconstruct paleoenvironmental evolu...
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ftdatacite:10.6084/m9.figshare.15081729 2023-05-15T15:54:28+02:00 Lipid biomarker data in sediment core from Chukchi Sea Xu, Yunping 2021 https://dx.doi.org/10.6084/m9.figshare.15081729 https://figshare.com/articles/dataset/Lipid_biomarker_data_in_sediment_core_from_Chukchi_Sea/15081729 unknown figshare Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 40204 Organic Geochemistry FOS Earth and related environmental sciences 40605 Palaeoclimatology 40606 Quaternary Environments dataset Dataset 2021 ftdatacite https://doi.org/10.6084/m9.figshare.15081729 2021-11-05T12:55:41Z The Chukchi Sea, one of the largest shelf seas, plays an important role in biogeochemical cycle and climate change in high latitude North Hemisphere. Here we examined a variety of lipid biomarkers in a sediment core (ARC-R09) collected from central Chukchi Sea to reconstruct paleoenvironmental evolution during the past 8700 years. The sea-ice biomarker IP25 (0.4–5.0 ng g-1 dws) and derived PIP25 indicator (0.04–0.86) suggested extended sea ice cover in early (8.7–8.3 cal kyr BP) and late (1.0–0 cal kyr BP) compared to middle to late Holocene (8.0–1.0 cal kyr BP). In contrast, the open-water phytoplankton biomarkers (i.e., dinosterol) and terrestrial biomarkers (long-chain n-alkanes) reached the highest abundance during 8.0–5.5 cal kyr BP, suggesting the higher marine primary productivity and larger terrestrial OC input in middle Holocene. The TEX86 indicative of sea surface temperature (SST; -3.0 to 3.4 ℃) and the BIT index (0.1–0.33) indicative of relative abundance of terrestrial vs. marine OC generally declined from early to middle Holocene, however, the TEX86-SST rapidly increased at 3.5 cal kyr BP, and stayed at the relatively high level until 2.0 cal kyr BP, followed by a large amplitude variability, whereas the BIT index remained at the low level (< 0.2) until present. Overall, the complex biomarker patterns were attributed to Holocene variability in solar insolation, inflow of warm and nutrient rich Pacific water, sea level and ocean circulation in the Chukchi Ses Dataset Chukchi Chukchi Sea Sea ice DataCite Metadata Store (German National Library of Science and Technology) Chukchi Sea Pacific |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
unknown |
topic |
40204 Organic Geochemistry FOS Earth and related environmental sciences 40605 Palaeoclimatology 40606 Quaternary Environments |
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40204 Organic Geochemistry FOS Earth and related environmental sciences 40605 Palaeoclimatology 40606 Quaternary Environments Xu, Yunping Lipid biomarker data in sediment core from Chukchi Sea |
topic_facet |
40204 Organic Geochemistry FOS Earth and related environmental sciences 40605 Palaeoclimatology 40606 Quaternary Environments |
description |
The Chukchi Sea, one of the largest shelf seas, plays an important role in biogeochemical cycle and climate change in high latitude North Hemisphere. Here we examined a variety of lipid biomarkers in a sediment core (ARC-R09) collected from central Chukchi Sea to reconstruct paleoenvironmental evolution during the past 8700 years. The sea-ice biomarker IP25 (0.4–5.0 ng g-1 dws) and derived PIP25 indicator (0.04–0.86) suggested extended sea ice cover in early (8.7–8.3 cal kyr BP) and late (1.0–0 cal kyr BP) compared to middle to late Holocene (8.0–1.0 cal kyr BP). In contrast, the open-water phytoplankton biomarkers (i.e., dinosterol) and terrestrial biomarkers (long-chain n-alkanes) reached the highest abundance during 8.0–5.5 cal kyr BP, suggesting the higher marine primary productivity and larger terrestrial OC input in middle Holocene. The TEX86 indicative of sea surface temperature (SST; -3.0 to 3.4 ℃) and the BIT index (0.1–0.33) indicative of relative abundance of terrestrial vs. marine OC generally declined from early to middle Holocene, however, the TEX86-SST rapidly increased at 3.5 cal kyr BP, and stayed at the relatively high level until 2.0 cal kyr BP, followed by a large amplitude variability, whereas the BIT index remained at the low level (< 0.2) until present. Overall, the complex biomarker patterns were attributed to Holocene variability in solar insolation, inflow of warm and nutrient rich Pacific water, sea level and ocean circulation in the Chukchi Ses |
format |
Dataset |
author |
Xu, Yunping |
author_facet |
Xu, Yunping |
author_sort |
Xu, Yunping |
title |
Lipid biomarker data in sediment core from Chukchi Sea |
title_short |
Lipid biomarker data in sediment core from Chukchi Sea |
title_full |
Lipid biomarker data in sediment core from Chukchi Sea |
title_fullStr |
Lipid biomarker data in sediment core from Chukchi Sea |
title_full_unstemmed |
Lipid biomarker data in sediment core from Chukchi Sea |
title_sort |
lipid biomarker data in sediment core from chukchi sea |
publisher |
figshare |
publishDate |
2021 |
url |
https://dx.doi.org/10.6084/m9.figshare.15081729 https://figshare.com/articles/dataset/Lipid_biomarker_data_in_sediment_core_from_Chukchi_Sea/15081729 |
geographic |
Chukchi Sea Pacific |
geographic_facet |
Chukchi Sea Pacific |
genre |
Chukchi Chukchi Sea Sea ice |
genre_facet |
Chukchi Chukchi Sea Sea ice |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.15081729 |
_version_ |
1766389666381037568 |