A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma
Long chain diols have been detected in a wide range of environments and have been used to reconstruct past environmental changes, however only a few long-term records exist to date. Here we reconstructed past environmental changes in the central Sea of Okhotsk over the last 1.5 million years, coveri...
Published in: | Organic Geochemistry |
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Language: | English |
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PERGAMON-ELSEVIER SCIENCE LTD
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Online Access: | http://ir.gig.ac.cn/handle/344008/51076 https://doi.org/10.1016/j.orggeochem.2019.04.003 |
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/51076 2023-05-15T18:18:59+02:00 A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma Lattaud, Julie Lo, Li Zeeden, Christian Liu, Ya-Jun Song, Sheng-Rong van der Meer, Marcel T. J. Damste, Jaap S. Sinninghe Schouten, Stefan 2019-06-01 http://ir.gig.ac.cn/handle/344008/51076 https://doi.org/10.1016/j.orggeochem.2019.04.003 英语 eng PERGAMON-ELSEVIER SCIENCE LTD ORGANIC GEOCHEMISTRY http://ir.gig.ac.cn/handle/344008/51076 doi:10.1016/j.orggeochem.2019.04.003 Geochemistry & Geophysics Sea of Okhotsk Mid-Pleistocene Transition LDI TEX86 U-37(K)' Biogenic opal Long-chain diols ICE-RAFTED DEBRIS MIDDLE PLEISTOCENE TRANSITION HYDROGEN ISOTOPIC COMPOSITION MILLENNIAL-SCALE VARIATIONS TERRESTRIAL ORGANIC-MATTER BRANCHED TETRAETHER LIPIDS GLOBAL CLIMATE CHANGES CHAIN DIOL PROXIES LONG-TERM CHANGES SURFACE TEMPERATURE 期刊论文 2019 ftchacadscgigcas https://doi.org/10.1016/j.orggeochem.2019.04.003 2020-12-22T07:22:36Z Long chain diols have been detected in a wide range of environments and have been used to reconstruct past environmental changes, however only a few long-term records exist to date. Here we reconstructed past environmental changes in the central Sea of Okhotsk over the last 1.5 million years, covering the Mid-Pleistocene Transition (MPT). Sea surface temperatures (SST) reconstructed using the Long-Chain Diol Index (LDI) reflects glacial/interglacial changes. However, when compared with other organic paleothermometers (U-37(K)'( )and TEX86L) the LDI-SST is lower during interglacials and similar or higher during glacials, possibly suggesting a shift of diol production season during interglacials. The LDI-SST does not change in periodicity around the MPT as observed for the TEX86L, likely due to this seasonal shift. Diatom productivity, as recorded by 1,14-diols and biogenic opal content, increased during the main deglaciations with a succession from Proboscia diatoms to diatoms with a more heavily silicified shell, confirming that primary productivity in the central Sea of Okhotsk is driven by sea-ice progress and retreat. In contrast to the LDI-SST, the 1,14-diols record shows a change in periodicity around the MPT from 41- to 100-kyr cycle, suggesting an influence of orbital parameters on diatom productivity. In the central Sea of Okhotsk, the relative amount of C-32 1,15-diol (F-C32 (1,15)), a proxy for riverine input, correlates with sea-level change with more riverine-derived material reaching the core site when the Amur River mouth is closer at lower sea-levels. In agreement, F-C32 (1,15) shows a change in periodicity during the MPT, with the appearance of a 100-kyr cycle. Our results show that the long chain diols can provide important paleoceanographic information in subpolar environments over long time scales, but that temperature reconstructions can be severely impacted by changes in seasonality. (C) 2019 The Authors. Published by Elsevier Ltd. Report Sea ice Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Okhotsk Organic Geochemistry 132 50 61 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Geochemistry & Geophysics Sea of Okhotsk Mid-Pleistocene Transition LDI TEX86 U-37(K)' Biogenic opal Long-chain diols ICE-RAFTED DEBRIS MIDDLE PLEISTOCENE TRANSITION HYDROGEN ISOTOPIC COMPOSITION MILLENNIAL-SCALE VARIATIONS TERRESTRIAL ORGANIC-MATTER BRANCHED TETRAETHER LIPIDS GLOBAL CLIMATE CHANGES CHAIN DIOL PROXIES LONG-TERM CHANGES SURFACE TEMPERATURE |
spellingShingle |
Geochemistry & Geophysics Sea of Okhotsk Mid-Pleistocene Transition LDI TEX86 U-37(K)' Biogenic opal Long-chain diols ICE-RAFTED DEBRIS MIDDLE PLEISTOCENE TRANSITION HYDROGEN ISOTOPIC COMPOSITION MILLENNIAL-SCALE VARIATIONS TERRESTRIAL ORGANIC-MATTER BRANCHED TETRAETHER LIPIDS GLOBAL CLIMATE CHANGES CHAIN DIOL PROXIES LONG-TERM CHANGES SURFACE TEMPERATURE Lattaud, Julie Lo, Li Zeeden, Christian Liu, Ya-Jun Song, Sheng-Rong van der Meer, Marcel T. J. Damste, Jaap S. Sinninghe Schouten, Stefan A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
topic_facet |
Geochemistry & Geophysics Sea of Okhotsk Mid-Pleistocene Transition LDI TEX86 U-37(K)' Biogenic opal Long-chain diols ICE-RAFTED DEBRIS MIDDLE PLEISTOCENE TRANSITION HYDROGEN ISOTOPIC COMPOSITION MILLENNIAL-SCALE VARIATIONS TERRESTRIAL ORGANIC-MATTER BRANCHED TETRAETHER LIPIDS GLOBAL CLIMATE CHANGES CHAIN DIOL PROXIES LONG-TERM CHANGES SURFACE TEMPERATURE |
description |
Long chain diols have been detected in a wide range of environments and have been used to reconstruct past environmental changes, however only a few long-term records exist to date. Here we reconstructed past environmental changes in the central Sea of Okhotsk over the last 1.5 million years, covering the Mid-Pleistocene Transition (MPT). Sea surface temperatures (SST) reconstructed using the Long-Chain Diol Index (LDI) reflects glacial/interglacial changes. However, when compared with other organic paleothermometers (U-37(K)'( )and TEX86L) the LDI-SST is lower during interglacials and similar or higher during glacials, possibly suggesting a shift of diol production season during interglacials. The LDI-SST does not change in periodicity around the MPT as observed for the TEX86L, likely due to this seasonal shift. Diatom productivity, as recorded by 1,14-diols and biogenic opal content, increased during the main deglaciations with a succession from Proboscia diatoms to diatoms with a more heavily silicified shell, confirming that primary productivity in the central Sea of Okhotsk is driven by sea-ice progress and retreat. In contrast to the LDI-SST, the 1,14-diols record shows a change in periodicity around the MPT from 41- to 100-kyr cycle, suggesting an influence of orbital parameters on diatom productivity. In the central Sea of Okhotsk, the relative amount of C-32 1,15-diol (F-C32 (1,15)), a proxy for riverine input, correlates with sea-level change with more riverine-derived material reaching the core site when the Amur River mouth is closer at lower sea-levels. In agreement, F-C32 (1,15) shows a change in periodicity during the MPT, with the appearance of a 100-kyr cycle. Our results show that the long chain diols can provide important paleoceanographic information in subpolar environments over long time scales, but that temperature reconstructions can be severely impacted by changes in seasonality. (C) 2019 The Authors. Published by Elsevier Ltd. |
format |
Report |
author |
Lattaud, Julie Lo, Li Zeeden, Christian Liu, Ya-Jun Song, Sheng-Rong van der Meer, Marcel T. J. Damste, Jaap S. Sinninghe Schouten, Stefan |
author_facet |
Lattaud, Julie Lo, Li Zeeden, Christian Liu, Ya-Jun Song, Sheng-Rong van der Meer, Marcel T. J. Damste, Jaap S. Sinninghe Schouten, Stefan |
author_sort |
Lattaud, Julie |
title |
A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
title_short |
A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
title_full |
A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
title_fullStr |
A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
title_full_unstemmed |
A multiproxy study of past environmental changes in the Sea of Okhotsk during the last 1.5 Ma |
title_sort |
multiproxy study of past environmental changes in the sea of okhotsk during the last 1.5 ma |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2019 |
url |
http://ir.gig.ac.cn/handle/344008/51076 https://doi.org/10.1016/j.orggeochem.2019.04.003 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
ORGANIC GEOCHEMISTRY http://ir.gig.ac.cn/handle/344008/51076 doi:10.1016/j.orggeochem.2019.04.003 |
op_doi |
https://doi.org/10.1016/j.orggeochem.2019.04.003 |
container_title |
Organic Geochemistry |
container_volume |
132 |
container_start_page |
50 |
op_container_end_page |
61 |
_version_ |
1766195793397547008 |