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Internal Wave Mixing near Energetic Sources

Internal Wave Mixing near Energetic Sources
能量源附近的内波混合
批准号:
0242471
负责人:
Kraig Winters
金额:
$38.15万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2002
资助国家:
美国
项目状态:
已结题
起止时间:
2002-08-01 至 2005-07-31

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中文摘要
翻译
本研究借由研究几种不同类型的非线性内波相互作用问题,来探讨内波在近源区域的混合作用。数值实验将被用来检查三个不同的制度。 第一个将着眼于非线性级联的能量之间的短期和长期的内波在一个破败的实验初始化的高能量,随机相位的内波场的频谱类似于假设的加勒特和芒克。 第二组实验将着眼于能量转移从内波的频率M2潮汐,迫使潮汐漂移地形,更高频率的内波时,该转移是催化的存在下的背景场的内波。 第三个重点是风强迫的近惯性波和非惯性内波之间的相互作用。 数值实验将进行三维,非流体静力学,psuedospectral代码。 数值计算结果将与先前各种海洋和沿海实验中收集的现场数据进行比较。
英文摘要
This study examines the role of internal waves in mixing near source regions of internal waves by studying several different types of non-linear internal-wave interaction problems. Numerical experiments will be used to examine three different regimes. The first will look at the nonlinear cascade of energy between short and long internal waves in a run-down experiment initialized with a high-energy, random-phase internal wave field with a spectrum similar to that postulated by Garrett and Munk. The second set of experiments will look at energy transfer from internal waves at the frequency of the M2 tide, forced by tidal excursions over topography, to higher frequency internal waves when that tranfer is catalyzed by the presence of a background field of internal waves. The third focus is on interactions between wind-forced near-inertial waves and non-inertial internal waves. The numerical experiments will be conducted with a three-dimensional, non-hydrostatic, psuedospectral code. The numerical results will be compared to field data collected during a variety of prior oceanic and coastal experiments.
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