ГИДРОЛОГО-ГИДРОХИМИЧЕСКАЯ СТРУКТУРА ВОД В ЗОНЕ АПВЕЛЛИНГА У ЮГО-ЗАПАДНОГО ПОБЕРЕЖЬЯ О. САХАЛИН

Abstract

Based on the spatial distributions of sea surface temperature according to satellite observations and observational data on standard oceanographic sections of the southwestern shelf of the Sakhalin Island in summer (August) and autumn (November) shows the existence of seasonal upwelling, which is formed under the influence of northerly and northwesterly winds, typical of the winter monsoon. In this area, it manifests to a lesser extent than in the northern part of the Tatar Strait (Shevchenko et al., 2011) due to the features of the bottom topography (short deep shelf) and the large thickness of the upper heated layer, but quite clearly. At the same time, deep water rises, rich in biogenic elements and mineral phosphorus, which is important for the development of young growth of kelp. In the warm period of the year, under the conditions of the prevailing southerly wind, upwelling is observed in this area sporadically (4 ̶ 5 times per season) in the form of sharp, up to 12 ̶ 15 °C, water temperature drops in the coastal area lasting from 3 to 12 days. Most often they occur during the passage of cyclones over the southern part of Sakhalin or Hokkaido Island, when they enter the southern part of the Sea of Okhotsk or the South Kuril Islands and formed east and northeast blowing winds over the study area.