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Sub-Mesoscale Vortex Streets in the Region of the Shantar Islands (Sea of Okhotsk), According to Satellite Remote Sensing Data
Izvestiya, Atmospheric and Oceanic Physics ( IF 0.7 ) Pub Date : 2021-03-09 , DOI: 10.1134/s0001433820120609
I. A. Zhabin , N. B. Luk’yanova

Abstract

Images in the visible range of the MODIS Terra/Aqua and ETM+ Landsat 7/OLI Landsat 8 satellites are used to study vortex streets (VSes) in the region of the Shantar Islands (Sea of Okhotsk​​). Two stable VSes are observed in the Northeast Strait separating Large and Small Shantar Islands. The northern VS forms near Diomede Stones Island, while the southern VS arises near a nameless group of rocks. The northern VS is 9–11 km long and consists of 4–5 pairs of cyclone-anticyclone vortices. The average diameter of a northern vortex is 0.73 ± 0.09 km. Vortices in the southern street are traced at distances of 6–7 km, with 3–5 vortex pairs recorded. The average diameter of a southern vortex is 0.47 ± 0.07 km. Vortices in the chain propagate mainly in the easterly direction at low tide and in the westerly direction at high tide. The spatial and temporal scales of the phenomenon show that both the vortices and VSes in the Northeast Strait are of a sub-mesoscale nature. The remote sensing data allow geometric parameters characterizing the stability of the oceanic VSes to be determined. The results from measurements and calculations can be used as tests demonstrating the possibility of applying the existing theory of similarity to VSes under real oceanic conditions. The parameters of oceanic VSes are compared to the results obtained in laboratory experiments and the characteristics of atmospheric VSes.



中文翻译:

根据卫星遥感数据,在尚塔尔群岛(鄂霍次克海)地区的亚中尺度涡街

摘要

MODIS Terra / Aqua和ETM + Landsat 7 / OLI Landsat 8卫星可见范围内的图像用于研究Shantar群岛(鄂霍次克海)地区的涡街(VSes)。在东北海峡观察到两个稳定的VSes,分别将Shantar群岛分为大大小小。北部VS形成于Diomede Stones岛附近,而南部VS则出现在一群无名的岩石附近。北部VS长9-11公里,由4-5对气旋-反气旋漩涡组成。北涡的平均直径为0.73±0.09 km。追踪南街的涡旋距离为6–7 km,记录了3–5个涡旋对。南部涡旋的平均直径为0.47±0.07 km。链条中的涡流主要在低潮时向东传播,在高潮时向西传播。这种现象的时空尺度表明,东北海峡的涡旋和垂直涡都是次中尺度的。遥感数据允许确定表征海洋VSes稳定性的几何参数。测量和计算的结果可以用作测试,证明在真实海洋条件下将现有的相似性理论应用于VSes的可能性。将海洋VSes的参数与在实验室实验中获得的结果以及大气VSes的特征进行了比较。测量和计算的结果可以用作测试,证明在真实海洋条件下将现有的相似性理论应用于VSes的可能性。将海洋VSes的参数与在实验室实验中获得的结果以及大气VSes的特征进行了比较。测量和计算的结果可以用作测试,证明在真实海洋条件下将现有的相似性理论应用于VSes的可能性。将海洋VSes的参数与在实验室实验中获得的结果以及大气VSes的特征进行了比较。

更新日期:2021-03-09
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