Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications
The Arctic Ocean is one of the world’s most remarkable regions with respect to global climate change. The core ARA09C-St03 was analyzed for mineral composition and Nd isotope to determine the sediment provenance and reconstruct the paleoenvironment in the inner slope of the Chukchi Rise. Core ARA09C...
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2021
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ftdoajarticles:oai:doaj.org/article:210cc20311614191a13443f601b1db7e 2023-05-15T14:56:56+02:00 Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications Hyo-Jin Koo Young-Keun Jin Hyen-Goo Cho 2021-07-01T00:00:00Z https://doi.org/10.3390/app11146491 https://doaj.org/article/210cc20311614191a13443f601b1db7e EN eng MDPI AG https://www.mdpi.com/2076-3417/11/14/6491 https://doaj.org/toc/2076-3417 doi:10.3390/app11146491 2076-3417 https://doaj.org/article/210cc20311614191a13443f601b1db7e Applied Sciences, Vol 11, Iss 6491, p 6491 (2021) Chukchi Sea mineralogy Nd isotope sediment provenance paleoenvironment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 article 2021 ftdoajarticles https://doi.org/10.3390/app11146491 2022-12-31T12:28:53Z The Arctic Ocean is one of the world’s most remarkable regions with respect to global climate change. The core ARA09C-St03 was analyzed for mineral composition and Nd isotope to determine the sediment provenance and reconstruct the paleoenvironment in the inner slope of the Chukchi Rise. Core ARA09C-St03 represents overall cycles of brown and gray color with three distinct dark brown layers and two pinkish-white layers and is divided into eight sedimentary units based on the lithological feature. The core has a continuous record of the late marine isotope stage (MIS) 5 to the Holocene and in particular provides a particularly high-resolution record from the Last Glacial Maximum (LGM). Sediment is derived mainly from the adjacent East Siberian Sea and the North American region, and changes in sediment provenance are controlled by climate-dependent particle size. During the glacial/stadial periods, sediments in Units 3, 5, and 8 were supplied by the East Siberian Sea via meltwater-derived suspension. The major ice-rafted debris (IRD) events in Units 2, 4, and 7, characterized by abundant dolomite and K/C ratio, were sourced from North America. The North America-derived materials reflect the initiation and disintegration of the Laurentide Ice Sheet and icebergs transported them across the open Arctic Ocean. The differences in provenance within these periods may be related to the scale of the Laurentide Ice Sheet. Interglacial sediments, including those from Units 1 and 6, are of mixed origin from Eurasia and the Canadian Archipelago and may have been transported by oceanic current and seasonal sea ice. These periods are likely associated with the negative Arctic Oscillation (AO) intensifying the Beaufort Gyre. Article in Journal/Newspaper Arctic Arctic Ocean Canadian Archipelago Chukchi Chukchi Sea Climate change East Siberian Sea Ice Sheet Iceberg* Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Chukchi Sea East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Chukchi Rise ENVELOPE(-165.000,-165.000,78.000,78.000) Applied Sciences 11 14 6491 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Chukchi Sea mineralogy Nd isotope sediment provenance paleoenvironment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Chukchi Sea mineralogy Nd isotope sediment provenance paleoenvironment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Hyo-Jin Koo Young-Keun Jin Hyen-Goo Cho Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
topic_facet |
Chukchi Sea mineralogy Nd isotope sediment provenance paleoenvironment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 |
description |
The Arctic Ocean is one of the world’s most remarkable regions with respect to global climate change. The core ARA09C-St03 was analyzed for mineral composition and Nd isotope to determine the sediment provenance and reconstruct the paleoenvironment in the inner slope of the Chukchi Rise. Core ARA09C-St03 represents overall cycles of brown and gray color with three distinct dark brown layers and two pinkish-white layers and is divided into eight sedimentary units based on the lithological feature. The core has a continuous record of the late marine isotope stage (MIS) 5 to the Holocene and in particular provides a particularly high-resolution record from the Last Glacial Maximum (LGM). Sediment is derived mainly from the adjacent East Siberian Sea and the North American region, and changes in sediment provenance are controlled by climate-dependent particle size. During the glacial/stadial periods, sediments in Units 3, 5, and 8 were supplied by the East Siberian Sea via meltwater-derived suspension. The major ice-rafted debris (IRD) events in Units 2, 4, and 7, characterized by abundant dolomite and K/C ratio, were sourced from North America. The North America-derived materials reflect the initiation and disintegration of the Laurentide Ice Sheet and icebergs transported them across the open Arctic Ocean. The differences in provenance within these periods may be related to the scale of the Laurentide Ice Sheet. Interglacial sediments, including those from Units 1 and 6, are of mixed origin from Eurasia and the Canadian Archipelago and may have been transported by oceanic current and seasonal sea ice. These periods are likely associated with the negative Arctic Oscillation (AO) intensifying the Beaufort Gyre. |
format |
Article in Journal/Newspaper |
author |
Hyo-Jin Koo Young-Keun Jin Hyen-Goo Cho |
author_facet |
Hyo-Jin Koo Young-Keun Jin Hyen-Goo Cho |
author_sort |
Hyo-Jin Koo |
title |
Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
title_short |
Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
title_full |
Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
title_fullStr |
Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
title_full_unstemmed |
Change in Sediment Provenance on the Inner Slope of the Chukchi Rise and Their Paleoenvironmental Implications |
title_sort |
change in sediment provenance on the inner slope of the chukchi rise and their paleoenvironmental implications |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/app11146491 https://doaj.org/article/210cc20311614191a13443f601b1db7e |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) ENVELOPE(-165.000,-165.000,78.000,78.000) |
geographic |
Arctic Arctic Ocean Chukchi Sea East Siberian Sea Chukchi Rise |
geographic_facet |
Arctic Arctic Ocean Chukchi Sea East Siberian Sea Chukchi Rise |
genre |
Arctic Arctic Ocean Canadian Archipelago Chukchi Chukchi Sea Climate change East Siberian Sea Ice Sheet Iceberg* Sea ice |
genre_facet |
Arctic Arctic Ocean Canadian Archipelago Chukchi Chukchi Sea Climate change East Siberian Sea Ice Sheet Iceberg* Sea ice |
op_source |
Applied Sciences, Vol 11, Iss 6491, p 6491 (2021) |
op_relation |
https://www.mdpi.com/2076-3417/11/14/6491 https://doaj.org/toc/2076-3417 doi:10.3390/app11146491 2076-3417 https://doaj.org/article/210cc20311614191a13443f601b1db7e |
op_doi |
https://doi.org/10.3390/app11146491 |
container_title |
Applied Sciences |
container_volume |
11 |
container_issue |
14 |
container_start_page |
6491 |
_version_ |
1766328985004802048 |