摘要
提出了一个考虑地形坡度的非线性Kelvin行波解的模型,在假定了地形坡度沿山脉走向不变而仅在垂直于山脉走向的方向有改变的情况下,求得了该模型的解析解,这有助于加深对沿海山地捕获波的认识。文中还将该解与经典情形(即侧边界取为垂直刚壁而底面为水平)的解作了比较,发现前者的波速与扰动振幅均较后者要小,这与我国东南沿海武夷山区的沿海山地捕获波的情况相一致。
The nonlinear Kelvin travelling\|wave solution with orographic slope is shown in this paper. Suppose that the orographic slope is invariable along the mountain range orientation but is variable across it, then analytic solution of the model is obtained, which is favourable for further understanding coastally mountain\|trapped wave. Here the solution is compared with typical solution, where lateral boundary is perpendicular and bottom boundary is horizontal surface. It is found that wave speed and perturbation amplitude of the former is smaller than the latter; it is also analogous in some ways to the case of real coastally mountain\|trapped wave in Wuyi Mountain of southeast China.
出处
《高原气象》
CSCD
北大核心
2003年第4期361-364,共4页
Plateau Meteorology
基金
国家自然科学基金项目(49875008)资助
