UPWELLING ON THE NARROW SHELF OF THE SEA OF JAPAN IN 2011

Kosheleva A.V., Yaroshchuk I.O., Khrapchenkov F.F., Pivovarov A.A., Samchenko A.N., Shvyrev A.N.,
Korotchenko R.A.

Characteristic features of a local upwelling observed in October, 2011 in the southwestern part of the Peter the Great Bay, the Sea of Japan, were studied using in situ and satellite observations. The paper presents as well the results of numeric simulation carried out with Regional Ocean Model System (ROMS) with a free surface. Meteorological observations of the wind field inhomogeneities as well as the results of in situ measurements of the seawater structure were used in the calculations. The analysis of in situ data and comparison with the simulation results of the upwelling development revealed that spatial and temporal scale of the phenomenon was determined by the force, the duration and the direction of wind. Inhomogeneity of the wind field over the Peter the Great Bay is closely associated with the peculiarities of coastal orography and leads to an upwelling intensification over some areas of the coast and to the creation of temperature fronts and cross-jets of cold water, transverse to the main current running along the shelf./p>

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