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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2016, Vol. 13, No. 4, pp. 60-73

Manifestations of inertial oscillations in satellite images of the sea surface

O.Yu. Lavrova 1 , K.D. Sabinin 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 24.08.2016
DOI: 10.21046/2070-7401-2016-13-21-60-73
The paper develops a technique for the detection of inertial oscillations (IOs) of water layers in satellite images of the sea surface. These oscillations are typically realized in solid body rotation of layers when the nonuniformities of the surface layer are transferred by inertial currents without configuration change within the whole region encompassed by the IO. Therefore, to reveal an IO, a single time satellite image is insufficient, it is necessary to obtain a series of images taken within the time interval equal to the inertial period. We suggest that if current tracers, represented by any densely packed substance capable to aggregate in zones of convergence, are present at the water surface, IOs will be manifested in satellite images either as circular slicks or plumes hemming the IO boundaries. Examples of corrugated-pipe-like structures presumably formed by IOs at stream edges of submesoscale eddies are presented. The hypothesis is supported by the results of concurrent buoy measurements. A comparison of surface manifestations of stream flows of submesoscale eddies, distinctly visible in radar images, with drifting buoy data demonstrated that the streams were accompanied by IOs.
Keywords: inertial oscillations, eddies, current tracers, satellite images, drifting buoys
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