Free oscillations of water level in the Posyet Gulf bays (the Sea of Japan)

Долгих, Г. И.; Budrin, S. S.; Долгих, С. Г.; Плотников, А. А.; Чупин, В. А.; Швец, В. А.; Yakovenko, S. V.

doi:10.3103/s1068373916080057

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…This oscillation is most pronounced in Lukina and Kalevala bays. This oscillation was found in Expedition Bay (Dolgikh et al 2016). The nodal line of this oscillation is at Troitsa Bay entrance, but the fundamental mode of this bay barely manifests itself.…”

Section: Resonance From Free Oscillations In the Gulfmentioning

confidence: 71%

“…8b, describes the first transverse seiche mode in the western part of the Peter the Great Gulf. This oscillation is most pronounced in Sivuchya Bay and Troitsa Bay, where it was recorded by measuring systems (Dolgikh et al 2016;Smirnov et al 2018).…”

Section: Resonance From Free Oscillations In the Gulfmentioning

confidence: 95%

“…In previous works (Dolgikh et al 2011(Dolgikh et al , 2016Smirnov et al 2018) measurements were made and the specific features of resonant oscillations in some areas within Posyet Bay were studied. We used these results in our study for comparison purposes.…”

Section: Introductionmentioning

confidence: 99%

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Resonant oscillations in the western part of the Peter the Great Gulf in the Sea of Japan

et al. 2021

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The research aims to study the resonant properties of the water area of the Peter the Great Gulf, in the Sea of Japan. The coast of the gulf is exposed to the threat of tsunamis due to relatively high seismic activity in the Sea of Japan. On May 26, 1983, a tsunami hit several bays of the gulf with wave heights reaching 5 m. As a response, the coasts were equipped with three sophisticated sea level measuring stations. Field measurements with installation of autonomous pressure gauges were carried out August 18-26, 2016, to study the peculiarities of free surface oscillations in the western part of the Peter the Great Gulf. Spectral analysis of the recorded data and the data obtained from the Posyet automated post of the Russian Tsunami Warning Service showed, in particular, that there were several clearly pronounced peaks at periods of 40, 48, 79 and 89 min. These oscillations are coincident for the Sea of Japan and the studied water area with a wide entrance. A finite-volume numerical model was used to calculate free oscillations in the computational domain covering the Sea of Japan region. We performed model calculations with an irregular triangular grid. This allowed us to describe both the outer water area of the Sea of Japan and separate small-scale relief elements in the water area under study, which are important for the formation of local seiches. Isophases and spatial patterns of several resonant oscillations spectra at 15-105 min periods were obtained for the Peter the Great Gulf area. Model calculations carried out in this work showed an evident spatial structure of resonant oscillations. Such research, including field measurements in adjacent coastal waters, is required to identify and monitor potentially hazardous coastal areas. The amplification of resonant oscillations depends on how effectively the specific atmospheric disturbance generates corresponding eigenmodes of the Sea of Japan. In some bays, the amplitudes of the Sea of Japan eigen oscillations can increase due to resonant properties of coastal water areas, even with a low quality factor. If the amplitudes are large, such a double resonance can lead to a meteorological tsunami.

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Section: Resonance From Free Oscillations In the Gulfmentioning

confidence: 71%

Section: Resonance From Free Oscillations In the Gulfmentioning

confidence: 95%

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Resonant oscillations in the western part of the Peter the Great Gulf in the Sea of Japan

et al. 2021

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“…The Troitsa Bay: 37.8 min (Helmholtz fashion); 12.6; 7.6; 5.4 minutes. The Vityaz Bay was studied in more detail [14,15]. As a result of processing the observational data in [14, p. 99; 15, p.…”

Section: The Numerical Simulation Resultsmentioning

confidence: 99%

“…The promising experimental studies of seiche oscillations in the Far East bays and gulfs should be mentioned. They were carried out by the Pacific Oceanographic Institute and the Institute of Marine Hydrophysics and Geology, Far Eastern Branch of the Russian Academy of Sciences using laser interferometers and laser hydrophones [14][15][16]. In the aforementioned works, the natural periods of a large number of Far Eastern bays were established.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Seiche Oscillations in the Adjacent Bays by the Example of the Sevastopol and the Quarantine Bays

Manilyuk¹,

Lazorenko²,

Фомін³

2020

PhO

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Purpose. The paper is aimed at studying the seiche structure in the adjacent bays' system of real configuration. Methods and Results. The response of the Sevastopol and Quarantine bays (Black Sea) to sea level fluctuations set at the open boundary of the computational domain has been studied. A number of random harmonics within the range of the eigen periods of these bays were used as fluctuations. The ADCIRC numerical model was applied for simulating. The numerical experiments were performed for three ranges obtained from the analytical estimates: 30–52, 8–30 and 1–15 min. The energy-bearing periods of seiche oscillations were revealed for both bays. The mutual influence of these bays was also studied. Conclusions. The above mentioned wave disturbances lead to generation of the seiche oscillations in the bays. For the Sevastopol Bay, their periods are 48, 22, 16, 10 and 6 min, for the Quarantine Bay – 11.4 and 4.8 min. The number of the generated modes is determined by the interval of the wave disturbance periods. The bays have a mutual influence on each other due to the wave energy exchange through their entrances. At that intensity of the eigen modes of the Sevastopol Bay penetrating the Quarantine Bay can exceed intensity of those of the Quarantine Bay. In both bays, the seiches with the largest amplitudes are induced by the disturbances, the periods of which are in the interval 30–52 min.

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Excitation of Under-Ice Seiches of a Sea Port of the Sea of Okhotsk

Долгих

Kovalev

2019

Dokl. Earth Sc.

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Free oscillations of water level in the Posyet Gulf bays (the Sea of Japan)

Cited by 6 publications

References 2 publications

Resonant oscillations in the western part of the Peter the Great Gulf in the Sea of Japan

Resonant oscillations in the western part of the Peter the Great Gulf in the Sea of Japan

Investigation of Seiche Oscillations in the Adjacent Bays by the Example of the Sevastopol and the Quarantine Bays

Excitation of Under-Ice Seiches of a Sea Port of the Sea of Okhotsk

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