Thermocline variability in the subtropical northwestern Pacific since the last deglaciation

doi:10.1016/j.palaeo.2022.111379

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Thermocline variability in the subtropical northwestern Pacific since the last deglaciation
	Qian, Fang 3,4; Chang, Fengming 1,4; Li, Tiegang 1,2; Li, Anchun 1,4; Sun, Hanjie 4; Zhang, Junru 3,4
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2023-02-15
卷号	612 页码:12
关键词	Subtropical Northwestern Pacific Last deglaciation Thermocline hydrology ENSO-like process Kuroshio current
ISSN号	0031-0182
DOI	10.1016/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.
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
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000978054800001
内容类型	期刊论文
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.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 2.MNR, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, 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.