| Enhanced ocean deoxygenation in the Bering Sea during MIS 11c | |
| Feng, Xuguang1,2,6; Zou, Jianjun2,3; Shi, Xuefa2,3; Worne, Savannah4,5; Yao, Zhengquan2,3; Zhong, Yi7; Jin, Hualong8; Dong, Jiang2; Dong, Zhi2; Feng, Han2; Zou, Xinqing1,6 | |
| 2024-03-01 | |
| 发表期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| ISSN | 0031-0182 |
| 卷号 | 637页码:12 |
| 通讯作者 | Shi, Xuefa(xfshi@fio.org.cn) ; Zou, Xinqing(zouxq@nju.edu.cn) |
| 摘要 | Accelerated Arctic warming has raised concerns about future environmental conditions in the Bering Sea, one of the world's most productive marine ecosystems. Marine Isotope Stage (MIS) 11 (424-374 ka), a period with orbital parameters similar to those of the current interglacial (Holocene), is thought to be a suitable analog to predict future marine environments. Here, we reconstruct paleoredox changes in the Bering Sea over the last 800 kyr using high-resolution U/Th ratios from four sites, which were sampled by the Integrated Ocean Drilling Program (IODP) Expedition 323. During the early stages of MIS 11 (MIS11c), four IODP Expedition 323 sites (U1339, U1340, U1343, and U1345) with different water depths (1100-1900 m) had highly elevated U/Th ratios, indicating a substantial loss of dissolved oxygen (O2) in the intermediate waters of the Bering Sea. High U/ Th ratios were closely associated with extremely high %biogenic opal in the Bering Sea and an exceptionally warm Arctic climate. We speculate that during this period, the highest amplitude deglacial warming led to the onset of a super interglacial (MIS 11c) in the Arctic regions, via Arctic amplification. The exceptionally warm Arctic climate resulted in particularly high export productivity in the Bering Sea via physiological effects, a reduction in sea ice, and increased river discharge. Due to high productivity, increased organic matter degradation caused severe hypoxia in the intermediate waters of the Bering Sea. Our study shows that severe hypoxia may also appear in the Bering Sea if Arctic warming accelerates in the future. |
| 关键词 | Bering Sea Severe hypoxia Export productivity MIS 11c Arctic warming |
| DOI | 10.1016/j.palaeo.2023.111982 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Laoshan Science and Technology Innovation Project[LSKJ202204203] ; National Natural Science Foundation of China[42276079] ; National Natural Science Foundation of China[41876065] ; National Natural Science Foundation of China[42130412] ; NSFC-Shandong Joint Fund[U1606401] ; Taishan Scholar Program of Shandong[tspd 20181216] ; Basic Scientific Fund for National Public Research Institutes of China[GY0223G01] |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
| WOS记录号 | WOS:001166065300001 |
| 出版者 | ELSEVIER |
| WOS关键词 | INTERMEDIATE-WATER VENTILATION ; BIOGENIC OPAL PRODUCTION ; PEARL RIVER ESTUARY ; IODP EXPEDITION 323 ; ARCTIC AMPLIFICATION ; AUTHIGENIC URANIUM ; GREENLAND CLIMATE ; MARINE-SEDIMENTS ; CHUKCHI SEA ; ICE VOLUME |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/184521 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Shi, Xuefa; Zou, Xinqing |
| 作者单位 | 1.Nanjing Univ, Collaborat Innovat Ctr South China Sea Studies, Sch Geog & Oceanog Sci, Nanjing 210093, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 3.Laoshan Lab, Lab Marine Geol, Qingdao 266237, Peoples R China 4.British Geol Survey, Nottingham NG12 5GG, England 5.Univ Nottingham, Nottingham NG7 2RD, England 6.Nanjing Univ, Key Lab Coast & Isl Dev, Minist Educ, Nanjing 210093, Peoples R China 7.Southern Univ Sci & Technol, Ctr Marine Magnetism CM 2, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China 8.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Xuguang,Zou, Jianjun,Shi, Xuefa,et al. Enhanced ocean deoxygenation in the Bering Sea during MIS 11c[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,637:12. |
| APA | Feng, Xuguang.,Zou, Jianjun.,Shi, Xuefa.,Worne, Savannah.,Yao, Zhengquan.,...&Zou, Xinqing.(2024).Enhanced ocean deoxygenation in the Bering Sea during MIS 11c.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,637,12. |
| MLA | Feng, Xuguang,et al."Enhanced ocean deoxygenation in the Bering Sea during MIS 11c".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 637(2024):12. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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