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		非线性海洋内波的理论、模型与计算1)
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			THEORY, MODELLING AND COMPUTATION OF NONLINEAR OCEAN INTERNAL WAVES1)
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| 图11. 直接数值模拟得到三维情况下的圣$\cdot $安德鲁十字现象, 对Boussinesq方程采用时空一致四阶精度的计算格式得到 | 
| Fig.11. DNS of St. Andrew’s cross in 3D Boussinesq equations based on a fourth-order (in both space and time) numerical scheme | 
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