Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific

IOCAS-IR

	Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific
	Liu K(刘昆); Xu ZH(徐振华); Yin BS(尹宝树)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2017-11-15
出版年	2017
卷号	v.35 期号:06 页码:17-28
文献类型	CNKI期刊论文
摘要	Recent satellite altimeter observations have indicated that internal tides(ITs) from the Luzon Strait(LS) propagate more than 2 500 km into the Western Pacific(WP). This study used a high-resolution three-dimensional numerical model to reproduce and examine the ITs radiation process. The propagation of diurnal and semidiurnal ITs showed dif ferent patterns and variations. Diurnal ITs with lower frequency were af fected more by the earth's rotation and they were bent more toward the equator than semidiurnal ITs. ITs phase speeds are functions of latitude and diurnal ITs showed greater distinctions of phase speeds during propagation. For M_2 ITs, the wavelength remained nearly unchanged but the beam width increased significantly during propagation away from the LS. For diurnal ITs(K_1 and O_1), the wavelength decreased noticeably with latitude, while the beam width varied little during propagation because of blocking by land. Baroclinic energy was also examined as a complement to satellite results reported by Zhao(2014). The magnitude of the generated baroclinic energy flux reduced remarkably within 300 km from the generation site but it then decayed slowly when propagating into abyssal sea. Baroclinic energy of diurnal ITs was found to dissipate at a slower rate than semidiurnal ITs along the main propagation path in the WP.
关键词	internal tides numerical simulation Luzon Strait Western Pacific
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;
CNKI专题名称	海洋学;
分类号	P731.23
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Natural Science Foundation of China(Nos.41528601,41376029,U1406401,41421005) ; the Strategic Pioneering Research Program of CAS(Nos.XDA10020104,XDA10020101) ; the CAS Interdisciplinary Innovation Team“Ocean Mesoscale Dynamical Processes and ecological effect”
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189099
专题	中国科学院海洋研究所
作者单位	1.InstituteofOceanology,ChineseAcademyofSciences 2.KeyLaboratoryofOceanCirculationandWaves(KLOCAW),ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences 4.LaboratoryforOceanandClimateDynamics,QingdaoNationalLaboratoryforMarineScienceandTechnology
推荐引用方式 GB/T 7714	Liu K,Xu ZH,Yin BS. Three-dimensional numerical simulation of internal tides that radiated from the Luzon Strait into the Western Pacific. 2017.