Physical Oceanography Physical Oceanography 1573-160X 20260307 Analysis of observations and methods of calculating Hydrophysical fields in the ocean Research Article Distribution of Suspended Matter in Karkinitsky Bay Based on Satellite Data https://orcid.org/0000-0003-1451-3440 F-2966-2017 57962254 Aleskerova A. A.
Russian Federation
annete08@mail.ru https://orcid.org/0000-0003-0705-0812 Y-1780-2018 7274-6248 Kharitonova L. V.
Russian Federation
l.kharitonova@mhi-ras.ru 4710-2532 JZT-8108-2024 Vasilenko N. V.
Russian Federation
nadinkot.nk@gmail.com https://orcid.org/0000-0003-3561-5913 F-8921-2014 4371-8879 Kubryakov A. A.
Russian Federation
arskubr@yandex.ru https://orcid.org/0000-0002-1033-5678 F-8915-2014 8146-9454 Stanichny S. V.
Russian Federation
stanichny@mail.ru Marine Hydrophysical Institute of RAS Sevastopol Russia 28 02 2026 33 3 482 500 29 09 2025 28 10 2025 16 03 2026 Copyright ©; 2026, A. A. Aleskerova, L. V. Kharitonova, N. V. Vasilenko, A. A. Kubryakov, S. V. Stanichny 2026 A. A. Aleskerova, L. V. Kharitonova, N. V. Vasilenko, A. A. Kubryakov, S. V. Stanichny https://creativecommons.org/licenses/by-nc/4.0/ https://physical-oceanography.ru/repository/issues/2026/03/07/

Purpose. The purpose of the work is to study the spatial-temporal distribution of total suspended matter in the Karkinitsky Bay water area using high- and medium-resolution satellite data.

Methods and Results. The data of MODIS/Aqua, OLI Landsat-8, -9 and MSI Sentinel-2 satellites on the brightness of upwelling radiation and the total suspended matter concentration for 2003–2024 were applied in the study. To analyze the wind and wave regime, the retrospective calculations of wind and wave conditions were statistically analyzed based on the ERA-Interim, ERA5 and SWAN-ERA reanalysis data for the same period, and the typical wave fields were mathematically modeled for the most wave-hazardous regions. The following maps of total suspended matter distribution were compiled: long-term average one, those for each month, for prevailing storm winds and for various wind-wave situations. It was revealed that the lowest values (up to 0.75 mg/L) were typical of the by western deep part, its eastern part was characterized by a more complex structure of distribution and a higher (by 2–4 times) total suspended matter concentrations. Within the seasonal variation, the following periods are distinguished: warm period (May – October) with relatively transparent waters (0.6–0.9 mg/L), cold season (December – March) with maximum total suspended matter concentrations (5.4–6 mg/L), and the periods of spring and autumn off-seasons. The dominant factor in seasonal variability is the storm wind-wave impact. As for the interannual variability, no direct relationship between the annual average values of suspended matter concentration and total storm power index was identified due to the limit of satellite data in cloudy conditions. It is found for the first time that the Small Phyllophora Field constitutes a significant factor influencing the distribution of suspended matter in the eastern part of the bay (lower brightness values above it are recorded in most images).

Conclusions. The waters of Karkinitsky Bay are characterized by high dynamics and spatial heterogeneity of suspended matter distribution. The seasonal variation of total suspended matter concentration is conditioned by the wind-wave regime.

 suspended matter satellite data MODIS-Aqua Landsat Karkinitsky Bay Black Sea wind-wave regime retrospective calculations Small Phyllophora Field The study was carried out with support of RSF grant 25-27-00234 "Study of the formation and redistribution of suspended matter in the Sea of Azov and on the western coast of Crimea".

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