SCSIO OpenIR  > 中科院边缘海地质重点实验室
Changes and influencing factors in biogenic opal export productivity in the Bering Sea over the last 4.3 Ma: Evidence from the records at IODP Site U1340
Zhang, Qiang; Chen, Muhong; Zhang, Lanlan; Su, Xiang; Xiang, Rong; Zhang, Q (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China.; Zhang, Q (reprint author), Univ Chinese Acad Sci, Beijing, Peoples R China.
2016
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号121期号:8页码:5789-5804
摘要We reconstructed changes in biogenic opal export productivity (BOEP) in the southern Bering Sea (BS) over the last similar to 4.3 Ma, based on mass accumulation rate (MAR) of biogenic opal from Integrated Ocean Drilling Program (IODP) Site U1340. The results show that the BOEP in the BS was high and variable between similar to 4.3 and similar to 1.9 Ma, extremely low and relatively stable from similar to 1.9 to similar to 1.1 Ma, and then fluctuated frequently (generally high during interglacials and low during glacials) during the last similar to 1.1 Ma. One interval of enhanced BOEP from similar to 4.3 to similar to 3.2 Ma is a response to the Late Miocene-Early Pliocene "Biogenic Bloom Event.'' Another interval from similar to 2.8 to similar to 1.9 Ma correlates with global opal burial shifting from high-latitude oceans to upwelling-influenced regions following the intensification of the Northern Hemisphere Glaciation (NHG). Whereas, the increase in BS opal export productivity during the last similar to 1.1 Ma tends to be a "local'' phenomenon. Overall, the BOEP shows a similar trend and good correspondence to the input of the Alaskan Stream (AS), which can be traced using the Na2O/K2O ratio. We thus conclude that the AS may be the direct, and primary factor on BOEP variability in the BS during the last similar to 4.3 Ma. In addition, although the poor correlation between opal MAR and volcanic glass suggests that BOEP variability was not controlled by longterm variations in the volcanism or ash abundance, increased ash abundance indicated by high contents of volcanic glasses was also a possible reason for enhanced BOEP during the period from similar to 4.3 to similar to 3.2 Ma and the last similar to 0.5 Ma.
部门归属[Zhang, Qiang; Chen, Muhong; Zhang, Lanlan; Su, Xiang; Xiang, Rong] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China; [Zhang, Qiang] Univ Chinese Acad Sci, Beijing, Peoples R China ; 边缘海地质
学科领域Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15326
专题中科院边缘海地质重点实验室
通讯作者Zhang, Q (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China.; Zhang, Q (reprint author), Univ Chinese Acad Sci, Beijing, Peoples R China.
推荐引用方式
GB/T 7714
Zhang, Qiang,Chen, Muhong,Zhang, Lanlan,et al. Changes and influencing factors in biogenic opal export productivity in the Bering Sea over the last 4.3 Ma: Evidence from the records at IODP Site U1340[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2016,121(8):5789-5804.
APA Zhang, Qiang.,Chen, Muhong.,Zhang, Lanlan.,Su, Xiang.,Xiang, Rong.,...&Zhang, Q .(2016).Changes and influencing factors in biogenic opal export productivity in the Bering Sea over the last 4.3 Ma: Evidence from the records at IODP Site U1340.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,121(8),5789-5804.
MLA Zhang, Qiang,et al."Changes and influencing factors in biogenic opal export productivity in the Bering Sea over the last 4.3 Ma: Evidence from the records at IODP Site U1340".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 121.8(2016):5789-5804.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。