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在南海东沙岛附近,从MODIS遥感图像发现内波传播是从深海经陆架坡再到浅海,由于深海和浅海环境条件的差异以及传播模型的适用条件不同,因此不能采用同一模型模拟内波的传播,需用两种模型来分别模拟内波在深海和浅海中的传播.采用差分法,首先用非线性薛定谔方程模拟了深海内波的传播,然后用EKdV方程模拟了内波在浅海中的继续传播.模拟结果与实际的MODIS遥感内波图像相符合,并与应用单一模型模拟结果相比,混合模型模拟该海区的内波传播更接近遥感实测,表明了混合模型的合理性.
In the vicinity of Dongsha Island in the South China Sea, it is found from the MODIS remote sensing images that the internal wave propagation is from the deep sea to the shallow sea. Due to the difference of the environmental conditions in the deep and shallow seas and the different applicable conditions of the propagation model, the same model can not be used to simulate the propagation of internal waves , Two kinds of models are needed to simulate the propagation of the internal waves in the deep sea and the shallow sea respectively.Using the difference method, the nonlinear Schrödinger equation is used to simulate the propagation of the deep sea waves, and then the EKdV equation is used to simulate the continuation of the internal waves in the shallow sea The simulation results are in good agreement with the actual MODIS remote sensing images, and compared with the single model simulation results, the mixed model simulates the inner wave propagation in this area closer to the remote sensing observations, indicating the rationality of the hybrid model.