往复潮流过地形生成内波的实验分析-experimental analysis of internal waves generated by reciprocating tidal current passing through terrain.docxVIP

地观测提供实验依据，还能为内波的数值模拟研究提供参考数据，在物理海洋学 和军事海洋学都具有重要的应用价值。 关键词： 正压潮流 内潮 海底地形 斜压能量 非线性内波 Abstract Internal waves are widely distributed in the global stratified ocean and seen in the coastal areas. The internal wave generation and mixing caused by internal wave are widespread phenomenon. When barotropic tidal currents flow over submarine ridge, especially after the steep submarine ridge will generate obvious internal tide, so submarine ridge is pretty important to the generation of internal tide, energy transfer and conversion in the process is very important to explore energy transfer among large scale, mesoscale, and small scale in the ocean. According to the relationship betweenω / N and topography slope sin α , the supercritical, critical and subcritical cases are divided. In this paper we will show the internal wave generation process of supercritical, critical and subcritical cases in linear and nonlinear density stratification. In some particular conditions, internal tide generated by barotropic tidal currents flow over submarine ridge will excite internal solitary wave, which can be seen offshore usually. Internal solitary wave is one kind of non-linear internal waves, with larger amplitude, higher speed and shorter period than internal wave in general. There are two kinds of the appearance form of internal solitary wave, one is single internal solitary wave; another is internal solitary wave train. Internal solitary wave has a huge influence and threats to communication and transportation and marine engineering building (such as oil, gas pipelines, cables and oil platforms, etc.). Therefore, Research on internal solitary wave is very significant for human life. At present, the generation mechanism of internal solitary wave in the ocean can roughly be summed up in two kinds (Fang Xinhua and Du Tao, 2005) : one is internal tide mechanism; Another is lee wave mechanism. This experiment will launch a series of experiments for both internal solitary wave genera