Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event
Abstract Mid-Brunhes Event (MBE) occurred at approximately 420 ka between Marine Isotope Stage 11 and 12, and is considered the most pronounced climatic shift during the last ~ 800 kyrs. On the other hand, it is unclear if the MBE was global, despite being observed in the high-latitude Northern Hemi...
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| Format: | Article |
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Nature Portfolio
2022-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19082-y |
| _version_ | 1811211771023720448 |
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| author | Kwangkyu Park Rujian Wang Wenshen Xiao Leonid Polyak Hyen Goo Cho Boo-Keun Khim |
| author_facet | Kwangkyu Park Rujian Wang Wenshen Xiao Leonid Polyak Hyen Goo Cho Boo-Keun Khim |
| author_sort | Kwangkyu Park |
| collection | DOAJ |
| description | Abstract Mid-Brunhes Event (MBE) occurred at approximately 420 ka between Marine Isotope Stage 11 and 12, and is considered the most pronounced climatic shift during the last ~ 800 kyrs. On the other hand, it is unclear if the MBE was global, despite being observed in the high-latitude Northern Hemispheric cryosphere in terms of climate systems. A 5.35-m long gravity core ARC5-MA01 was obtained from the northern Mendeleev Ridge in the western Arctic Ocean to track the paleoenvironmental changes in terms of the terrigenous sedimentation in response to the glacial-interglacial climate changes across the MBE. Geochemical proxies (biogenic opal, total organic carbon, C/N ratio, carbon isotope of organic matter, and calcium carbonate) of MA01 suggest that the terrigenous input was generally higher during the interglacial periods. Based on a mineralogical examination, most of the terrigenous input was attributed to the abundance of dolomite and the increased kaolinite content from North America. In particular, most paleoceanographic proxies showed that the terrigenous input from North America was enhanced distinctly during the post-MBE interglacial periods. These results suggest that the MBE in the western Arctic Ocean was a global climatic shift closely linked to cryospheric development in North America during the middle Pleistocene. |
| first_indexed | 2024-04-12T05:18:10Z |
| format | Article |
| id | doaj.art-70ca12dbe0204402b2d0dd895bd27b98 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T05:18:10Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-70ca12dbe0204402b2d0dd895bd27b982022-12-22T03:46:34ZengNature PortfolioScientific Reports2045-23222022-09-0112111010.1038/s41598-022-19082-yIncreased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes EventKwangkyu Park0Rujian Wang1Wenshen Xiao2Leonid Polyak3Hyen Goo Cho4Boo-Keun Khim5Marine Research Institute, Pusan National UniversityState Key Laboratory of Marine Geology, Tongji UniversityState Key Laboratory of Marine Geology, Tongji UniversityByrd Polar Research Center, The Ohio State UniversityDepartment of Geology and Research Institute of Natural Science, Gyeongsang National UniversityDepartment of Oceanography, Pusan National UniversityAbstract Mid-Brunhes Event (MBE) occurred at approximately 420 ka between Marine Isotope Stage 11 and 12, and is considered the most pronounced climatic shift during the last ~ 800 kyrs. On the other hand, it is unclear if the MBE was global, despite being observed in the high-latitude Northern Hemispheric cryosphere in terms of climate systems. A 5.35-m long gravity core ARC5-MA01 was obtained from the northern Mendeleev Ridge in the western Arctic Ocean to track the paleoenvironmental changes in terms of the terrigenous sedimentation in response to the glacial-interglacial climate changes across the MBE. Geochemical proxies (biogenic opal, total organic carbon, C/N ratio, carbon isotope of organic matter, and calcium carbonate) of MA01 suggest that the terrigenous input was generally higher during the interglacial periods. Based on a mineralogical examination, most of the terrigenous input was attributed to the abundance of dolomite and the increased kaolinite content from North America. In particular, most paleoceanographic proxies showed that the terrigenous input from North America was enhanced distinctly during the post-MBE interglacial periods. These results suggest that the MBE in the western Arctic Ocean was a global climatic shift closely linked to cryospheric development in North America during the middle Pleistocene.https://doi.org/10.1038/s41598-022-19082-y |
| spellingShingle | Kwangkyu Park Rujian Wang Wenshen Xiao Leonid Polyak Hyen Goo Cho Boo-Keun Khim Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event Scientific Reports |
| title | Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event |
| title_full | Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event |
| title_fullStr | Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event |
| title_full_unstemmed | Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event |
| title_short | Increased terrigenous input from North America to the northern Mendeleev Ridge (western Arctic Ocean) since the mid-Brunhes Event |
| title_sort | increased terrigenous input from north america to the northern mendeleev ridge western arctic ocean since the mid brunhes event |
| url | https://doi.org/10.1038/s41598-022-19082-y |
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