Oceanological Conditions in the Area of Soth Kuril Islands According to Ship and Satellite Observations

Shevchenko, G. V.; Tshay, Zh. R.; Chastikov, V. N.

doi:10.29006/1564-2291.jor-2021.49(2).2

Cited by 2 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…This indicates that in the area of the Nemuro Peninsula, which crosses this track, diurnal shelf waves are not exist. This excludes the possibility of the existence of barotropic diurnal shelf waves in the area between the Lesser Kuril Ridge and the northeastern coast of Nemuro Island as assumed in (Shevchenko & Romanov, 2008).…”

Section: Spatial Variations Of O1 and K1 Amplitudes And Phasesmentioning

confidence: 95%

“…The basis for this study were the results of tidal harmonic analysis at the points on TOPEX/Poseidon satellite ground tracks, both the original ones (1992-2002) and shifted by half the inter-track distance (2002-2005) (Shevchenko & Romanov, 2008). Despite the rather short series in the second case, the calculation of tidal wave's amplitudes and phases turned out to be quite reliable, at least in areas without data gaps due to the ice cover (including oceanic shelf of South Kuril Islands).…”

Section: Data and Area Descriptionmentioning

confidence: 99%

“…However, these data were not enough to accurately determine the zone of existence of diurnal shelf waves. This requires either numerous instrumental measurements of currents in different parts of the study area as in (Shevchenko et al, 2006), or satellite altimetry data covering the entire area (Shevchenko & Romanov, 2008). In last paper, TOPEX/Poseidon satellite altimetry data were used to determine the characteristics of diurnal shelf waves in the area of North Kuril Islands.…”

Section: Introductionmentioning

confidence: 99%

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Diurnal shelf waves in the area of the South Kuril Islands from the TOPEX/Poseidon satellite altimetry data

Shevchenko

Tsoi

2023

Preprint

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The existence zones of diurnal shelf waves near the South Kuril Islands were determined based on the analysis of small-scale amplitude and phase variations of diurnal O1 and K1 tidal waves estimated from along-track TOPEX/Poseidon altimetry data. The amplitudes and phases of the these waves were revealed not only along the original tracks (1992–2002), but also along those shifted by half the intertrack distance (2002–2005). This made it possible to more accurately determine the zone of existence of diurnal shelf waves. It was found that these waves, existing in the form of baroclinic coastal trapped modes, strongly influence tidal motions on the oceanic shelf of Urup and Iturup islands. Two wavelengths fit in this section of the shelf (one pair of quasi-stationary eddies is localized on the shelf of Urup Island and the second one on the shelf of Iturup Island). This is an unexpected and interesting result; barotropic shelf modes usually form one pair of eddies (for example, on the northeaster shelf of Sakhalin Island, on the northern shelf of Hokkaido Island and on the oceanic shelf of the North Kuril Islands). We found that the zone of influence of both K1 and O1 tidal waves starting from Chirpoi Island, which means that shelf waves are generated as a result of the diffraction of a large-scale Kelvin tidal wave on the deep Bussol Strait. The existence of lower frequency O1 tidal shelf wave was found not only on the shelf of Urup and Iturup islands, but also on the shelf of Shikotan Island, which is consistent with the earlier results of Yefimov and Rabinovich (1980). Diurnal shelf waves cause significant increase of O1 and K1 amplitudes on the coast of Iturup Island (especially in its southern part) and Urup Island in comparison with the open ocean and produce strong diurnal tidal currents in these regions, as it follows from the direct instrumental. Baroclinic diurnal shelf (coastal trapped) waves are also the reason of vertical movements, forcing water temperature variations at sufficiently great depths, which can have a significant impact on the living conditions of benthic communities.

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Section: Spatial Variations Of O1 and K1 Amplitudes And Phasesmentioning

confidence: 95%

Section: Data and Area Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diurnal shelf waves in the area of the South Kuril Islands from the TOPEX/Poseidon satellite altimetry data

Shevchenko

Tsoi

2023

Preprint

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Diurnal Baroclinic Shelf Waves in the Area of the South Kuril Islands Observed in TOPEX/Poseidon Satellite Altimetry Data

Shevchenko,

Tsoi

2024

Pure Appl. Geophys.

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The existence zones of diurnal shelf waves near the South Kuril Islands were determined based on the analysis of small-scale amplitude and phase variations of diurnal O1 and K1 tidal waves estimated from along-track TOPEX/Poseidon altimetry data. The amplitudes and phases of the these waves were revealed not only along the original tracks (1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002), but also along those shifted by half the intertrack distance (2002)(2003)(2004)(2005). This made it possible to more accurately determine the zone of existence of diurnal shelf waves. It was found that these waves, existing in the form of baroclinic coastal trapped modes, strongly in uence tidal motions on the oceanic shelf of Urup and Iturup islands. Two wavelengths t in this section of the shelf (one pair of quasi-stationary eddies is localized on the shelf of Urup Island and the second one on the shelf of Iturup Island). This is an unexpected and interesting result; barotropic shelf modes usually form one pair of eddies (for example, on the northeaster shelf of Sakhalin Island, on the northern shelf of Hokkaido Island and on the oceanic shelf of the North Kuril Islands). We found that the zone of in uence of both K1 and O1 tidal waves starting from Chirpoi Island, which means that shelf waves are generated as a result of the diffraction of a large-scale Kelvin tidal wave on the deep Bussol Strait. The existence of lower frequency O1 tidal shelf wave was found not only on the shelf of Urup and Iturup islands, but also on the shelf of Shikotan Island, which is consistent with the earlier results of Ye mov and Rabinovich (1980). Diurnal shelf waves cause signi cant increase of O1 and K1 amplitudes on the coast of Iturup Island (especially in its southern part) and Urup Island in comparison with the open ocean and produce strong diurnal tidal currents in these regions, as it follows from the direct instrumental. Baroclinic diurnal shelf (coastal trapped) waves are also the reason of vertical movements, forcing water temperature variations at su ciently great depths, which can have a signi cant impact on the living conditions of benthic communities.

show abstract

Oceanological Conditions in the Area of Soth Kuril Islands According to Ship and Satellite Observations

Cited by 2 publications

References 1 publication

Diurnal shelf waves in the area of the South Kuril Islands from the TOPEX/Poseidon satellite altimetry data

Diurnal shelf waves in the area of the South Kuril Islands from the TOPEX/Poseidon satellite altimetry data

Diurnal Baroclinic Shelf Waves in the Area of the South Kuril Islands Observed in TOPEX/Poseidon Satellite Altimetry Data

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