Journal of Tropical Oceanography >
The characteristics of internal solitary waves at Liuhua in the northern South China Sea
Received date: 2012-08-02
Revised date: 2012-11-30
Online published: 2014-01-21
Using the observed data from a submerged buoy system at Liuhua in the northern South China Sea in April 2011, the characteristics of internal solitary waves (ISWs) have been studied by analyzing the isotherms and current fields near the thermocline. It is found that the ISWs mainly came from the strait between Luzon and Fuga islands, generated during the spring tide period, and that the propagation direction of the ISWs was 292° mostly. Most of the ISWs were Type a, appeared regularly at 0 o’clock almost everyday, and the average period was 24 hours. In addition, an ISW with the maximum amplitude during the observation was analyzed. It appeared at 1 o’clock on April 21st. It was a typical first-mode depression wave, and its amplitude, period, velocity, direction and half wave width were 80.9 m, 24 min, 1.29 m·s-1, 298°, and 129.4 m, respectively.
Key words： Internal solitary waves; Liuhua; South China Sea
SHI Xin-gang , LIU Yao-hua , LAN Zhi-gang , SONG Ji-wen , HE Qi , LEI Fang-hui , WANG Jun-qin , HUANG Bi-gui , ZHU Xue-ming . The characteristics of internal solitary waves at Liuhua in the northern South China Sea[J]. Journal of Tropical Oceanography, 2013 , 32(6) : 22 -27 . DOI: 10.11978/j.issn.1009-5470.2013.06.004
DUDA T F, LYNCH J F, IRISH J D, et al. Internal tide and nonlinear internal wave behavior at the continental slope in the northern South China Sea[J]. IEEE J Ocean Eng, 2004, 29: 1105-1130.
LIU A K, RAMP S R, ZHAO Y-H, et al. A case study of internal solitary wave propagation during ASIAEX 2001[J]. IEEE J Oceanic Eng, 2004, 29(4): 1144-1156.
RAMP S R, TANG T Y, DUDA T F, et al. Internal solitons in the Northeastern South China Sea. PartⅠ: Sources and deep water propagation[J]. IEEE J Ocean Eng, 2004, 29: 1157-1181.
YANG Y J, TANG T Y, CHANG M H, et al. Solitons northeast of Tung-Sha Island during the ASIAEX pilot studies[J]. IEEE J Ocean Eng, 2004, 29(4): 1182-1199.
胡涛, 马力, 张云鹏. 海南岛南部海区非线性内波特征分析[J]. 海洋湖沼通报, 2008, 2: 8-15.
柯自明, 尹宝树, 徐振华, 等. 南海文昌海域内孤立波特征观测研究[J]. 海洋与湖沼, 2009, 40(3): 269-274.
XU ZHENHUA, YIN BAOSHU, HOU YIJUN, et al. A study of internal solitary waves observed on the continental shelf in the northwestern South China Sea[J]. Acta Oceanol Sin, 2010, 29(3): 18-25.
蔡树群, 甘子钧, 龙小敏. 南海北部孤立子内波的一些特征和演变[J]. 科学通报, 2001, 46(15): 1245-1250．
CAI SHUQUN, GAN ZIJUN, LONG XIAOMIN. Some characteristics and evolution of the internal soliton in the northern South China Sea[J]. Chinese Sci Bull, 2002, 47(1): 21-26.
HSU M-K, LIU A K. Nonlinear internal waves in the South China Sea[J]. Can J Remote Sens, 2000, 26: 72-81.
CHAO SHENNYU, SHAW PINGTUNG, HSU MINGKUANG, et al. Reflection and diffraction of internal solitary waves by a circular island[J]. J Oceanogr, 2006, 62: 811-823.
李群, 孙丽, 徐肇廷. 内孤立波波-波相互作用的数值模拟[J]. 中国海洋大学学报, 2007, 37(6): 868-872.
XU JIEXIN, XIE JIESHUO, CAI SHUQUN. Variation of Froude number versus depth during the passage of internal solitary waves from the in-situ observation and a numerical model[J]. Cont Shelf Res, 2011, 31: 1318-1323.
ROSENFELD L K. WHOI Technical Report 85-35[R]. Massachusetts: WHOI, 1983: 21.
KLYMAK M J, PINKEL R, LIU C T, et al. Prototypical solitons in the South China Sea[J]. Geophys Res Lett, 2006, 33: L11607.
ZHAO Z, ALFORD M H. Source and propagation of internal solitary waves in the northeastern South China Sea[J]. J Geophys Res, 2006, 111: C11012.
石新刚, 范植松, 李培良. 正压潮流对南海东北部深水海域大振幅内孤立波数值模拟的影响[J]. 中国海洋大学学报: 自然科学版, 2009, 39(SupⅡ): 297-302.
石新刚, 范植松. 南海东北部深水海域大振幅内孤立波SAR遥感仿真研究[J]. 海洋与湖沼, 2011, 42(6): 1-7.
/
| 〈 |
|
〉 |
