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Волновая динамика стратифицированных сред переменной глубины

Волновая динамика стратифицированных сред переменной глубины

Abstract

The article considers wave dynamics in a stratified medium of the non-uniform depth. It presents the research into the wave dynamics of monochrome internal gravity waves in the wedge. Both an explicit analytical solution to this problem and the asymptotics are found. The explicit solutions to an assumption of the linear bottom slant are found with the help of the Kantorovich Lebedev transformation. They describe both a separated mode and the total wave field excited by a common source point. WKBJasymptotics of the separate wave mode defined by a hypergeometric function as well as asymptotics of the total wave field defined by semilogarithmical function are obtained. The results of numerical computations of the wave fields occurring in the natural ocean environment using the exact and asymptotic quotations are presented. The limits to their applicability are determined

Рассмотрены поля внутренних гравитационных волн в слое стратифицированной среды переменной глубины. Исследована волновая динамика монохроматических внутренних гравитационных волн в клине и построены как точные решения этой задачи, так и асимптотики. В предположении линейного наклона дна с использованием преобразования Канторовича Лебедева получены точные решения, описывающие отдельную моду и полное волновое поле, возбуждаемое точечным источником возмущений. Построены ВКБ-асимптотики отдельной волновой моды, которые выражаются через гипергеометрическую функцию, а также асимптотики полного волнового поля, выражающиеся через полулогарифмическую функцию. Для параметров среды, характерной для реального океана, приведены результаты численных расчетов волновых полей по точным и асимптотическим формулам и оценены границы их применимости

Keywords

СТРАТИФИЦИРОВАННАЯ СРЕДА, ВНУТРЕННИЕ ГРАВИТАЦИОННЫЕ ВОЛНЫ, ВКБ-АСИМПТОТИКИ, ПРЕОБРАЗОВАНИЕ КАНТОРОВИЧА ЛЕБЕДЕВА

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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze