Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana
Abstract A high‐resolution abundance curve of the radiolarian species, Cycladophora davisiana , was obtained from a Late Pleistocene sediment core, PC‐23A, which was obtained from the northern slope of the Bering Sea. The abundance pattern of this species was high during the glacial period and low d...
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crwiley:10.1002/jqs.1356 2024-09-15T17:59:30+00:00 Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana Itaki, Takuya Uchida, Masao Kim, Sunghan Shin, Hye‐Son Tada, Ryuji Khim, Boo‐Keun 2009 http://dx.doi.org/10.1002/jqs.1356 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1356 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1356 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 24, issue 8, page 856-865 ISSN 0267-8179 1099-1417 journal-article 2009 crwiley https://doi.org/10.1002/jqs.1356 2024-08-30T04:12:27Z Abstract A high‐resolution abundance curve of the radiolarian species, Cycladophora davisiana , was obtained from a Late Pleistocene sediment core, PC‐23A, which was obtained from the northern slope of the Bering Sea. The abundance pattern of this species was high during the glacial period and low during the Holocene. This general stratigraphic pattern was correlated with a previously reported pattern for the subarctic Pacific Ocean. However, planktonic foraminifera‐based accelerator mass spectrometry 14 C dating revealed that a significant peak in the C. davisiana curve during the glacial period correlates to 15.5 ka, which is younger than that previously estimated as being the Last Glacial Maximum. The higher abundance of this species implies that there was well‐ventilated water with a large amount of organic matter in the intermediate‐water layer. An unusually high propagation of C. davisiana during the earliest Holocene period, Bølling–Allerød (B‐A) and Dansgaad–Oescheger interstadial event # 12, was most likely related to a significant increase in the amount of organic matter released into the intermediate‐water depths by a brine pump system via ventilation. In addition, centennial‐scale variations in the abundance of C. davisiana during the B‐A period suggest that the intermediate‐water ventilation was sensitively affected by brine rejection during sea ice formation as well as large‐scale atmospheric circulations such as the Arctic Oscillation. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper Bering Sea Foraminifera* Planktonic foraminifera Sea ice Subarctic Wiley Online Library Journal of Quaternary Science 24 8 856 865 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A high‐resolution abundance curve of the radiolarian species, Cycladophora davisiana , was obtained from a Late Pleistocene sediment core, PC‐23A, which was obtained from the northern slope of the Bering Sea. The abundance pattern of this species was high during the glacial period and low during the Holocene. This general stratigraphic pattern was correlated with a previously reported pattern for the subarctic Pacific Ocean. However, planktonic foraminifera‐based accelerator mass spectrometry 14 C dating revealed that a significant peak in the C. davisiana curve during the glacial period correlates to 15.5 ka, which is younger than that previously estimated as being the Last Glacial Maximum. The higher abundance of this species implies that there was well‐ventilated water with a large amount of organic matter in the intermediate‐water layer. An unusually high propagation of C. davisiana during the earliest Holocene period, Bølling–Allerød (B‐A) and Dansgaad–Oescheger interstadial event # 12, was most likely related to a significant increase in the amount of organic matter released into the intermediate‐water depths by a brine pump system via ventilation. In addition, centennial‐scale variations in the abundance of C. davisiana during the B‐A period suggest that the intermediate‐water ventilation was sensitively affected by brine rejection during sea ice formation as well as large‐scale atmospheric circulations such as the Arctic Oscillation. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Itaki, Takuya Uchida, Masao Kim, Sunghan Shin, Hye‐Son Tada, Ryuji Khim, Boo‐Keun |
spellingShingle |
Itaki, Takuya Uchida, Masao Kim, Sunghan Shin, Hye‐Son Tada, Ryuji Khim, Boo‐Keun Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
author_facet |
Itaki, Takuya Uchida, Masao Kim, Sunghan Shin, Hye‐Son Tada, Ryuji Khim, Boo‐Keun |
author_sort |
Itaki, Takuya |
title |
Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
title_short |
Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
title_full |
Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
title_fullStr |
Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
title_full_unstemmed |
Late Pleistocene stratigraphy and palaeoceanographic implications in northern Bering Sea slope sediments: evidence from the radiolarian species Cycladophora davisiana |
title_sort |
late pleistocene stratigraphy and palaeoceanographic implications in northern bering sea slope sediments: evidence from the radiolarian species cycladophora davisiana |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/jqs.1356 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1356 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1356 |
genre |
Bering Sea Foraminifera* Planktonic foraminifera Sea ice Subarctic |
genre_facet |
Bering Sea Foraminifera* Planktonic foraminifera Sea ice Subarctic |
op_source |
Journal of Quaternary Science volume 24, issue 8, page 856-865 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1356 |
container_title |
Journal of Quaternary Science |
container_volume |
24 |
container_issue |
8 |
container_start_page |
856 |
op_container_end_page |
865 |
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1810436609889271808 |