NDLI: Observation of internal tides and near-inertial motions in the upper 450 m layer of the northern South China Sea

Content Provider	Springer Nature Link
Author	Liang, Xinfeng Zhang, Xiaoqian Tian, Jiwei
Copyright Year	2005
Abstract	Mooring ADCP current observations from August to November are used to study the barotropic tides, baroclinic tides and near-inertial motions in the upper 450 m layer of the northern South China Sea. The barotropic and baroclinic tides at the mooring station are all dominated by M$_{2}$, K$_{1}$, O$_{1}$, P$_{1}$, with the barotropic amplitudes being 7.8 cms·s$^{−1}$, 7.0 cm·s$^{−1}$, 5.4 cm·s$^{−1}$ and 3.5 cm·s$^{−1}$ respectively. The amplitudes of M$_{2}$, K$_{1}$ O$_{1}$, P$_{1}$ internal tides vary greatly, which are 12–15 cm·s$^{−1}$ in the thermocline, and then decrease with increasing depth. The amplitude of the barotropic near-inertial motions is less than 1 cm·s$^{−1}$, contributing little to the barotropic currents. However, that of the baroclinic near-inertial motions can be as large as 5 cm·s$^{−1}$. The inclination of tidal ellipse tends to increase with increasing depth, implying upward propagation of energy, while that of the near-inertial ellipse tends to decrease with increasing depth, implying downward propagation of energy.
Starting Page	2890
Ending Page	2895
Page Count	6
File Format	PDF
ISSN	10016538
Journal	Chinese Science Bulletin
Volume Number	50
Issue Number	24
e-ISSN	18619541
Language	English
Publisher	Science in China Press
Publisher Date	2005-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	tide internal tide near-inertial motion South China Sea Life Sciences Physics Chemistry/Food Science Science Geosciences Engineering
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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