气候变化领域集成服务门户(CCPortal): Water-Mass Properties and Circulation in the Deep and Abyssal Philippine Sea

CCPortal

DOI	10.1029/2020JC016994
	Water-Mass Properties and Circulation in the Deep and Abyssal Philippine Sea
	Tian Z.; Zhou C.; Xiao X.; Wang T.; Qu T.; Yang Q.; Zhao W.; Tian J.
发表日期	2021
ISSN	21699275
卷号	126 期号:6
英文摘要	Water-mass properties and circulation in the deep and abyssal Philippine Sea are investigated using repeatedly occupied full-depth hydrographic data. The abyssal water-mass, the Lower Circumpolar Deep Water (LCDW), is captured. After crossing the Yap Mariana Junction, the LCDW spreads to the Parece Vela Basin, the southern part of the Shikoku Basin, the Minami-Daito Basin, and the northern Philippine Basin, with its upper interface sinking from ∼4,000 m to ∼5,000 m. Blocked by the Central Basin Fault, the LCDW cannot penetrate further southward into the southern Philippine Basin. An abyssal current across the Kyushu-Palau Ridge connecting the eastern and western parts of the Philippine Sea is identified at 22.5°N–29.5°N, which is suggested to be the main branch transporting LCDW from the Yap Mariana Junction westward into the northern Philippine Basin. Synoptic analysis of hydrographic observations suggests the existence of a cyclonic circulation in the abyssal Philippine Sea. During 1990–2020, a warming trend of 0.33 ± 0.19 × 10−3°C yr−1 is identified at depths below 2,000 m, while a SiO2 maximum core at 30°N implies a possible cooling of the Mixed Deep Water (more influenced by North Pacific Deep Water) in the Philippine Sea. Under 4,000 m, freshening together with warming south of 20°N indicate contraction of LCDW after entering the Yap Mariana Junction. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	deep circulation; deep warming; deep water-mass distribution; Lower Circumpolar Deep Water; the Philippine Sea
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186278
作者单位	Physical Oceanography Laboratory/Institute for Advanced Ocean Study/Sanya Oceanographic Institution, Ocean University of China, Shandong/Hainan, Qingdao/Sanya, China; Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, Shandong, China; Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	Tian Z.,Zhou C.,Xiao X.,et al. Water-Mass Properties and Circulation in the Deep and Abyssal Philippine Sea[J],2021,126(6).
APA	Tian Z..,Zhou C..,Xiao X..,Wang T..,Qu T..,...&Tian J..(2021).Water-Mass Properties and Circulation in the Deep and Abyssal Philippine Sea.Journal of Geophysical Research: Oceans,126(6).
MLA	Tian Z.,et al."Water-Mass Properties and Circulation in the Deep and Abyssal Philippine Sea".Journal of Geophysical Research: Oceans 126.6(2021).