Abnormal hydrometeorological conditions in the estuarinecoastal period of the pink salmon life (eastern Sakhalin)
Abstract
It is shown that the unfavorable conditions of the pink salmon habitat in the estuarine-coastal period of life (reproduction in the rivers of the eastern Sakhalin coast) leads to a decrease in its abundance. An important indicator of the state of such conditions is the SST anomalies in May-June. Extreme cooling in the coastal Sakhalin regions is caused by the abnormal development of regional atmospheric centers of action. The analysis of hydrometeorological conditions was carried out by the methods of interval recognition, taking into account its speed and rather good accuracy. This made it possible to significantly reduce efforts in analyzing the impact of hydrometeorological conditions on the life cycles of the East Sakhalin pink salmon. As a result of application of the method of interval recognition on a complex of hydrometeorological parameters, high recognition coefficients in years of extremely low catches in odd and even years were obtained. Based on the data obtained, may and June are critical months for the temperate zone for the reproduction and formation of the number of pink salmon of Eastern Sakhalin, as well as its redistribution by fishing areas. The regional mechanism of interaction of the atmosphere and ocean in the years of intensive development of the Okhotsk anticyclone, which is characterized by the formation of local anomalies against the background of thermobaric structures over the Central area 2 e. s. r.
About the Authors
T. A. Shatilina
Pacific Research Fisheries Centre (FSBSI «TINRO-Centre»)
Russian Federation
Russian Federation
Vladivostok
A. Y. Velikanov
Sakhalin Research Institute of Fisheries and Oceanography (FSBSI «SakhNIRO»)
Russian Federation
Russian Federation
Yuzhno-Sakhalinsk
G. Sh. Tsitsiashvili
Institute of applied mathematics FEB RAS (FSBIS «IAM FEB RAS»)
Russian Federation
Russian Federation
Vladivostok
T. V. Radchenkova
Institute of applied mathematics FEB RAS (FSBIS «IAM FEB RAS»)
Russian Federation
Russian Federation
Vladivostok
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Review
For citations:
Shatilina T.A., Velikanov A.Y., Tsitsiashvili G.Sh., Radchenkova T.V. Abnormal hydrometeorological conditions in the estuarinecoastal period of the pink salmon life (eastern Sakhalin). Trudy VNIRO. 2018;173:181-192. (In Russ.)
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