статья в журнале

En

Cosmic Research

ISSN:0010-9525
eSSN:1608-3075

2023

Lavrova, O.Yu.¹

Nazirova, K.R.¹

Alferyeva, Ya.O.¹

10.1134/s0010952523700594

CACRSG

Measurements of Sulak River plume parameters in the Caspian Sea conducted from June 2 to 7, 2023, concurrently with satellite survey allowed tracing changes in water turbidity (WT) and suspended particulate matter (SPM) concentration in the near-mouth zone after the arrival of mudflow masses into the sea. Heavy rains in the mountains of Dagestan on May 31, 2023, caused mudflows, which entered, in particular, the Sulak River. Two days later, on June 2, mud masses, together with river water, flowed into the Caspian Sea. In the near-mouth zone, WT values exceeded 1000 NTU, which was beyond the allowable threshold of a portable turbidimeter employed for turbidity measurements. On June 2, 4, 5 and 7, quasi-synchronously with satellite imaging, measurements were conducted from a small boat using various oceanographic equipment. They were accompanied with water sampling for further determination of SPM concentration and mineral composition. The linear dependence revealed between WT and SPM concentration made it possible to calculate WT that could not be measured in situ: it amounted to 1247 NTU at SPM concentration of 1097.4 g/m3...

SATELLITE REMOTE SENSING, PLUME, TURBIDITY, SUSPENDED PARTICULATE MATTER CONCENTRATION, MINERAL COMPOSITION OF SUSPENDED SOLIDS, SENTINEL-2 MSI, LANDSAT-8 OLI, LANDSAT-9 OLI-2, SULAK RIVER, CASPIAN SEA, IN SITU MEASUREMENTS, MUDFLOWS

2024-05-20 11:01:56