日本地球惑星科学連合2014年大会

講演情報

ポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS24_28PO1] 地球流体力学:地球惑星現象への分野横断的アプローチ

2014年4月28日(月) 18:15 〜 19:30 3階ポスター会場 (3F)

コンビーナ:*伊賀 啓太(東京大学大気海洋研究所)、中島 健介(九州大学大学院理学研究院地球惑星科学部門)、吉田 茂生(九州大学大学院理学研究院地球惑星科学部門)、柳澤 孝寿(海洋研究開発機構 地球内部ダイナミクス領域)、相木 秀則(海洋研究開発機構)

18:15 〜 19:30

[MIS24-P01] Spectrum of internal waves in bounded domains of the Atmosphere and the Ocean

*GINIATOULLINE Andrei1 (1.Department of Mathematics, Los Andes University, Bogota, Colombia, South America)

キーワード:computational fluid dynamics, compressible fluid, rotating stratified fluid, essential spectrum, internal waves, fluid dynamics of the Atmosphere and the Ocean

We consider the spectral properties of internal waves for three-dimensional compressible rotating exponentially stratified fluid. This model describes the flows in the Atmosphere and the Ocean which include simultaneously the rotation of the Earth over the vertical axis, and the non-homogeneous initial stratification of density caused by the gravitational force. We obtain theoretical results for the spectrum of the resulting internal waves in terms of its structure, localization, and its possible usage in computational algorithms. The applications of the spectral properties of such internal waves can be found, in particular, in the models of the resonance effect. We consider both the general case of bounded domains, and the explicit results of some particular domains, such as cubes and cylinders.