Coherent and incoherent features, seasonal behaviors and spatial variations of internal tides in the northern South China Sea

2017 ◽  
Vol 172 ◽  
pp. 75-83 ◽  
Author(s):  
Anzhou Cao ◽  
Zheng Guo ◽  
Xianqing Lv ◽  
Jinbao Song ◽  
Jicai Zhang
Keyword(s):  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Spatial Variations ◽  
Internal Tides ◽  
China Sea

Features of internal tides observed near the shelf break in the northern South China Sea

2019 ◽  
Vol 69 (3) ◽  
pp. 353-365 ◽  
Author(s):  
Shengli Chen ◽  
Daoyi Chen ◽  
Jiuxing Xing ◽  
Jianyu Hu ◽  
Zhenyu Sun
Keyword(s):  
South China Sea ◽  
South China ◽  
Northern South China Sea ◽  
Shelf Break ◽  
Internal Tides ◽  
China Sea

Polarity Variations of Internal Solitary Waves over the Continental Shelf of the Northern South China Sea: Impacts of Seasonal Stratification, Mesoscale Eddies, and Internal Tides

2018 ◽  
Vol 48 (6) ◽  
pp. 1349-1365 ◽  
Author(s):  
Xiaojiang Zhang ◽  
Xiaodong Huang ◽  
Zhiwei Zhang ◽  
Chun Zhou ◽  
Jiwei Tian ◽  
...  
Keyword(s):  
South China Sea ◽  
Continental Shelf ◽  
South China ◽  
Northern South China Sea ◽  
Internal Tides ◽  
Thermocline Depth ◽  
China Sea ◽  
Seasonal Stratification ◽  
Anticyclonic Eddies ◽  
The Impact

AbstractSpatiotemporal variations in internal solitary wave (ISW) polarity over the continental shelf of the northern South China Sea (SCS) were examined based on mooring-array observations from October 2013 to June 2014. Depression ISWs were observed at the easternmost mooring, where the water depth is 323 m. Then, they evolved into elevation ISWs at the westernmost mooring, with a depth of 149 m. At the central mooring, with a depth of 250 m, the ISWs generally appeared as depression waves in autumn and spring but were elevation waves in winter. Seasonal variations in stratification caused this seasonality in polarity. On the intraseasonal time scales, anticyclonic eddies can modulate ISW polarity at the central mooring by deepening the thermocline depth for periods of approximately 8 days. During some days in autumn and spring, depression ISWs and ISWs in the process of changing polarity from depression to elevation appeared at time intervals of 10–12 h because of the thermocline deepening caused by internal tides. Isotherm anomalies associated with eddies and internal tides have a more significant contribution to determining the polarity of ISWs than do the background currents. The observational results reported here highlight the impact of multiscale processes on the evolution of ISWs.

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