A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS
	Fan Wei 1; Song Jinbao 1; Li Shuang 2
刊名	ACTA OCEANOLOGICA SINICA
	2014-07-01
卷号	33 期号:7 页码:56-64
关键词	thermocline South China Sea ROMS typhoon
通讯作者	Fan, W (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China.
英文摘要	On the basis of the regional ocean modeling system (ROMS), the seasonal variations of the thermocline in the South China Sea (SCS) were numerically investigated. The simulated hydrodynamics are in accordance with previous studies: the circulation pattern in the SCS is cyclonic in winter and anticyclonic in summer, and such a change is mostly driven by the monsoon winds. The errors between the modeled temperature profiles and the observations obtained by cruises are quite small in the upper layers of the ocean, indicating that the ocean status is reasonably simulated. On the basis of the shapes of the vertical temperature profiles, five thermocline types (shallow thermocline, deep thermocline, hybrid thermocline, double thermocline, and multiple thermocline) are defined herein. In winter, when the northeasterly monsoon prevails, most shallow shelf seas in the northwest of the SCS are well mixed, and there is no obvious thermocline. The deep region generally has a deep thermocline, and the hybrid or double thermocline often occurs in the areas near the cold eddy in the south of the SCS. In summer, when the southwesterly monsoon prevails, the shelf sea area with a shallow thermocline greatly expands. The distribution of different thermocline types shows a relationship with ocean bathymetry: from shallow to deep waters, the thermocline types generally change from shallow or hybrid to deep thermocline, and the double or multiple thermocline usually occurs in the steep regions. The seasonal variations of the three major thermocline characteristics (the upper bound depth, thickness, and intensity) are also discussed. Since the SCS is also an area where tropical cyclones frequently occur, the response of thermocline to a typhoon process in a short time scale is also analyzed.
学科主题	Oceanography
收录类别	SCI
语种	英语
WOS记录号	WOS:000338098400007
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/23905]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Zhejiang Univ, Dept Ocean Sci & Engn, Hangzhou 310058, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Fan Wei,Song Jinbao,Li Shuang. A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS[J]. ACTA OCEANOLOGICA SINICA,2014,33(7):56-64.
APA	Fan Wei,Song Jinbao,&Li Shuang.(2014).A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS.ACTA OCEANOLOGICA SINICA,33(7),56-64.
MLA	Fan Wei,et al."A numerical study on seasonal variations of the thermocline in the South China Sea based on the ROMS".ACTA OCEANOLOGICA SINICA 33.7(2014):56-64.