статья в журнале

Ru

Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli Iz Kosmosa

ISSN:2070-7401
eSSN:2411-0280

2019

Nazirova, K.R.¹

Lavrova, O.Y.¹

Krayushkin, E.V.¹

Alferyeva, Y.O.¹

10.21046/2070-7401-2019-16-2-227-243

The paper presents the results of measurements of plume parameters of the Mzymta River conducted in April 2018 concurrently with satellite imaging. From the data of Sentinel-2 MSI, Landsat-8 OLI and Sentinel-3 OLCI instruments, the total suspended matter content was determined by standard algorithms and compared with that measured in situ using a turbidity meter and water sampling. It is shown that values of suspended matter concentration determined from satellite data approximately coincide with those measured in situ only in the region of the marginal filter. A sharp frontal boundary, distinguished from in situ measurements, was located at a distance of no more than 500 m from the river mouth, farther seaward suspended matter concentration fell almost 10 times. The values of this parameter, obtained from satellite data, changed gradually almost to the visible boundary of the plume. The results of in situ measurements also made it possible to assess the validity of the spatial characteristics of plumes obtained from satellite data. Plume areas and the maximum distance of the plume edge from the coastline were estimated. The dependence of the plume area on water level in the river was considered. The outer boundary of the plume that appears in visible satellite data due to the optical differences of sea and turbid river waters is not as clearly observed in in situ measurements of temperature, salinity and turbidity. At the same time, in situ measurements make it possible to detect spatial inhomogeneities in the plume that are not distinguishable in satellite data. From the in situ measurements, the depth of river water intrusion into the sea was determined, which did not exceed 3-4 m.

BLACK SEA, IN SITU MEASUREMENTS, MSI SENTINEL-2, MZYMTA, OCEAN COLOR SATELLITE DATA, OLI LANDSAT-8, RIVER PLUME, TOTAL SUSPENDED MATTER

2019-12-12 15:49:00