В работе представлены результаты ис

В работе представлены результаты исследования характеристик поверхностных гравитационных волн, проведенных в натурных условиях в заливе Ладожского озере в 2015 году. В экспериментах присутствовали волны различной природы: кильватерный след от маломерного судна (волна от детерминированного источника) и ветровое волнение (которое характеризуется широкой диаграммой направленностью и слабой пространственной когерентностью). По спектру волнения от детерминированного источника хорошо видны проявления дисперсии поверхностных волн, например, растягивание пакета при прохождении большой дистанции. Так же наблюдается зависимость направление распространения волны от ее частоты, которая возникает в результате синхронизма со скоростью источника и согласуется с теорией.
Известно, что теория накладывает кинематические условия на параметры волны от движущегося источника, но непосредственно значение амплитуды возбужденной волны зависит от параметров источника и должно является предметом экспериментального исследования. Натурное исследование корабельных волн и других коррелированных пакетов волн требует отделения их от ветровой компоненты, как от фонового шума. Это возможно при проведении синхронных измерений в нескольких точках. В частности, оптические методы измерения могут одновременно охватывать большую площадь.
Использованная комбинированная оптическая схема измерения заключается в проведение синхронных видеозаписей изображения поверхности. Во-первых, регистрируется изображение участка взволнованной поверхности с размером порядка или более 10x10 длин энергонесущих волн – обзорная видеосъемка. Во-вторых, проводится видеозапись с большим увеличением так называемой «оптической» вешки (аналога струнного волнографа с регистрацией высоты волны оптически, а не электрически).

Results (English) 1:

The paper presents the results of research of characteristics of surface gravity waves, carried out in natural conditions in the Bay of Lake Ladoga in the year 2015. In the experiments was attended by various waves of nature: wake the trail from recreational craft (wave from deterministic sources) and windscreen excitement (which has a broad focus and weak spatial diagram kogerentnost′û). On the spectrum of excitement from a deterministic source visible manifestations of the dispersion of surface waves, for example, stretching the package when passing a large distance. Just observed the dependence of wave propagation direction from its frequency, that occurs as a result of the synchronism with the speed of the source and is consistent with the theory.It is known that theory imposes conditions on the kinematical parameters of the waves from a moving source, but directly excited wave amplitude depends on the settings of the source and should is the subject of a pilot study. Full-scale study of ship waves and other correlated wave packet requires separating them from wind as from background noise. This is possible when conducting simultaneous measurements at multiple points. In particular, optical measurement methods can cover a large area.Used combined optical measurement scheme is conducting synchronous video images of the surface. Firstly, the image plot surface excited by the size of the order or more 10 x 10 lengths ∙ waves-review video. Secondly, video recording is carried out with the large increase of the so-called "optical" Pushpins (no string volnografa with the registration wave height optically, rather than electrical).

Results (English) 2:

The results of studies of the characteristics of surface gravity waves, conducted in natural conditions in the Bay of Lake Ladoga in 2015. In the experiments, there were waves of different nature: a wake from small boat (deterministic wave from the source) and wind waves (which is characterized by a wide acceptance angle and a weak spatial coherence). On the spectrum of emotion from deterministic sources are clearly visible manifestations of the dispersion of surface waves, such as stretching of the package when passing a large distance. As observed dependence of the direction of propagation of the wave on its frequency, which arises as a result of the synchronism with the speed of the source and is consistent with the theory.
It is well known that the theory imposes kinematic conditions on the parameters of the waves from a moving source, but directly to the amplitude of the excited waves depends on the parameters of the source and should It is the subject of a pilot study. Full-scale research ship waves and other correlated wave packets requires separating them from the wind components, both from the background noise. This is possible during simultaneous measurements at several points. In particular, optical measurement techniques can simultaneously cover a large area.
Use the combined optical measurement circuit is conducting synchronous video images of the surface. First, the recorded image area with the size of the rough surface of about 10x10 lengths or more energy-waves - video review. Secondly, the video recording is carried out with a large increase in the so-called "optical" landmarks (analog string wave recorder with recording wave height optically rather than electrically).

Results (English) 3:

the results of the study characteristics of surface gravity waves, conducted in field conditions in the bay of ladoga lake in 2015.in the experiments were of different waves.кильватерный trail of small tonnage vessel (wave from the детерминированного source) and wind stress (which is characterized by the diagram orientation and weak spatial когерентностью).on the spectrum of turbulence from the детерминированного source clearly visible manifestations of the dispersion of surface waves, for example, elongate package during a race.as the dependency direction of waves from the frequency that occurs as a result of синхронизма at source and in line with the theory of "the known.what theory imposes conditions on the parameters кинематические waves from a moving sourcebut directly relevant amplitude excited waves depends on the parameters of the source and is the subject of a pilot study.натурное study of ship waves and other коррелированных packages requires separate waves of wind components, from the background noise. it is possible for simultaneous measurements at several points.in particular, optical measurement methods can simultaneously cover a large area.the combined optical design is the simultaneous measurement of video images of the surface. first of all,the image of the surface is excited with the size of the order, or more 10x10 length энергонесущих waves - review video. secondly,a tape with a big increase in the so-called "оптической» вешки (equivalent string волнографа registration height wave optically and electrically.