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Thermocline variability in the subtropical northwestern Pacific since the last deglaciation

文献类型：期刊论文

作者Qian, Fang2,4; Chang, Fengming2,3; Li, Tiegang1,3; Li, Anchun2,3; Sun, Hanjie2; Zhang, Junru2,4
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2023-02-15
卷号612页码:12
ISSN号0031-0182
关键词Subtropical Northwestern Pacific Last deglaciation Thermocline hydrology ENSO-like process Kuroshio current
DOI10.1016/j.palaeo.2022.111379
通讯作者Chang, Fengming(chfm@qdio.ac.cn) ; Li, Tiegang(tgli@fio.org.cn)
英文摘要Thermocline conditions in the tropical western Pacific are closely linked to regional- and basin-scale hydrological variation and may have played a critical role in global climate evolution on various timescales. However, longterm changes in thermocline hydrology in the subtropical northwestern Pacific and their connection to the tropical Pacific remain unclear. Based on planktonic foraminiferal Mg/Ca and delta(18O), we reconstructed the temperature and salinity of thermocline water since the last deglaciation, using core OKI02 from the Okinawa Trough (OKT) in the subtropical northwestern Pacific. The results indicated a discrepancy in evolution of both temperature and delta O-18 between the thermocline and surface water over the past 19 ka. Unlike for surface water, changes in thermocline hydrology correlated with changing conditions in the tropical western Pacific, indicating a close relationship between these regions since the last deglaciation. Thermocline temperature and salinity gradients between the OKT and the tropical western Pacific increased from similar to 16.5 to 10 ka BP, reached their maximum values at approximately 10 ka BP, and then decreased from the Early Holocene to present. Variations in temperature and salinity gradients correlated with changes in the El Nino-Southern Oscillation (ENSO) over the past 19 ka, which were coupled with equatorial summer insolation variations. We suggest that the ENSO-like process, forced by equatorial summer insolation, regulated thermocline dynamics in the subtropical northwestern Pacific Ocean since the last deglaciation, by influencing the strength of the Kuroshio Current.
WOS关键词MIDDLE OKINAWA TROUGH ; WESTERN EQUATORIAL PACIFIC ; NINO-SOUTHERN OSCILLATION ; EL-NINO ; TROPICAL PACIFIC ; OXYGEN-ISOTOPE ; WARM POOL ; FORCING MECHANISMS ; GLOBAL CLIMATE ; SEA-LEVEL
资助项目Special funds of Shandong Province for Laoshan Laboratory[LSKJ202204201] ; National Natural Science Foundation of China[42076051] ; National Natural Science Foundation of China[41876068] ; National Natural Science Foundation of China[41830539] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; China Scholarship Council[202104910295]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
出版者ELSEVIER
WOS记录号WOS:000978054800001
源URL[http://ir.qdio.ac.cn/handle/337002/182945]  
专题海洋研究所_海洋地质与环境重点实验室
通讯作者Chang, Fengming; Li, Tiegang
作者单位1.MNR, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Qian, Fang,Chang, Fengming,Li, Tiegang,et al. Thermocline variability in the subtropical northwestern Pacific since the last deglaciation[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,612:12.
APA Qian, Fang,Chang, Fengming,Li, Tiegang,Li, Anchun,Sun, Hanjie,&Zhang, Junru.(2023).Thermocline variability in the subtropical northwestern Pacific since the last deglaciation.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,612,12.
MLA Qian, Fang,et al."Thermocline variability in the subtropical northwestern Pacific since the last deglaciation".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 612(2023):12.

入库方式： OAI收割

来源：海洋研究所

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