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A study of shelf waters of Sakhalin based on remote sensing data

https://doi.org/10.25587/SVFU.2019.15.37093

Abstract

The most important indicators of the environment, determining the ecological state of the hydrobiont communities in the Sakhalin shelf zone, are temperature, salinity, gas, and light patterns.More than 80 % of all organisms of the Far East seas live in the Sea of Okhotsk, which is explained by the presence of good food base. Its salinity is an order of magnitude lower than that of the ocean, which forms a subsurface layer with zero and negative temperatures. Monitoring of the ocean surface temperature is carried out by infrared radiometers and allows estimate the main characteristics of the state of water.Comprehensive study of the shelf began in the 1970s due to execution of standard hydrological proling, and reached its peak in the 1980s with the discovery of oil and gas elds. At the same time, they began to apply remote sensing methods.Research of the world ocean made from orbit using many different satellites, the main are Terra for land and Aqua for the water surface. The main scanner, exploring the waters of Sakhalin, MODIS is created by NASA to study the biological productivity of the ocean. The images that it takes are freely available on specialized websites.To identify the temperature patterns, we studied images for the period from Jan 01, 2018 to Feb 17, 2019. Some of them were performed in the winter, and were abolished as uninformative, because during this period, the waters of Sakhalin are under the ice cover. The temperature peak falls to late August-early September, this is due to cyclones coming to the region. Low salinity of the Sea of Okhotsk and the Sea of Japan contributes to a wide variety of living organisms. The Sakhalin shelf is rich in phytoplankton, because local waters are convenient for it and rich in important organic components (C, N, Si, O).

About the Authors

A. A. Stroeva
Sakhalin State University
Russian Federation


V. A. Melky
Sakhalin State University
Russian Federation


A. A. Verkhoturov
Sakhalin State University
Russian Federation


References

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Review

For citations:


Stroeva A.A., Melky V.A., Verkhoturov A.A. A study of shelf waters of Sakhalin based on remote sensing data. Vestnik of North-Eastern Federal University Series "Earth Sciences". 2019;(3):61-70. (In Russ.) https://doi.org/10.25587/SVFU.2019.15.37093

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