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Analytic solutions for Long's equation and its generalization

机译:长型方程的分析解决方案及其概括

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Two-dimensional, steady-state, stratified, isothermal atmospheric flow over topography is governed by Long's equation. Numerical solutions of this equation were derived and used by several authors. In particular, these solutions were applied extensively to analyze the experimental observations of gravity waves. In the first part of this paper we derive an extension of this equation to non-isothermal flows. Then we devise a transformation that simplifies this equation. We show that this simplified equation admits solitonic-type solutions in addition to regular gravity waves. These new analytical solutions provide new insights into the propagation and amplitude of gravity waves over topography.
机译:二维,稳态,分层,轮廓上的等温大气流量受到长的等式的管辖。 若干作者来源和使用该等式的数值解。 特别地,这些溶液被广泛应用以分析重力波的实验观察。 在本文的第一部分中,我们将该方程的扩展导出到非等温流。 然后我们设计了一种简化了这种方程的转换。 我们表明,除了常规重力波之外,这种简化的等式还承认孤子型解决方案。 这些新的分析解决方案在地形上的传播和重力幅度的传播和幅度提供了新的见解。

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