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, 2025, Vol. 22, No. 1, pp. 205-211

Observations of plastic debris localization in windrows on the water surface

O.A. Danilicheva 1 , S.A. Ermakov 1, 2 , G.V. Leshchev 1 
1 Institute of Applied Physics RAS, Nizhny Novgorod, Russia
2 Volga State University of Water Transport, Nizhny Novgorod, Russia
Accepted: 28.11.2024
DOI: 10.21046/2070-7401-2025-22-1-205-211
This paper aims to investigate the effect of plastic debris localization in windrows using the analysis data of multispectral images of the Caspian Sea from the Sentinel-2 satellite and the results of special in situ experiments at the Gorky Reservoir. The processes of entrainment of debris floating in the near-surface water layer into the area of Langmuir circulation convergence are modeled during special experiments. On the basis of satellite multispectral data analysis and calculation of plastic index (PI) distribution, the effect of plastic debris localization in the windrows associated with Langmuir circulation is illustrated. Using data from special experiments with plastic debris simulators, it is shown that plastic debris is oriented along wind, localizing in the windrows in times of the order of 10–20 minutes, these times are assumed to depend on wind speed. The obtained data are in good agreement with observations of velocities in Langmuir circulations reported in literature.
Keywords: plastic debris, Langmuir circulations, windrows, water surface
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