Yu. V. Manilyuk , V. F. Sannikov
Marine Hydrophysical Institute of RAS, Sevastopol, Russia
Abstract
Within the framework of linear approximation of the long wave’s theory, seiche oscillations are considered in a partially closed rectangular basin of variable depth varying according to a parabolic law. An analytical solution was obtained for the case when the node level line is located at the bay entrance. The periods, level fluctuations and seiche currents are investigated. Estimates of the periods of main seiches modes are obtained for the Sevastopol Bay, the Kholmskaya Bay, the Alekseev Bay, the Petrozavodsk Bay of the Onega Lake. It was revealed that analytical estimates of seiche periods in these reservoirs are in satisfactory agreement with the data of field observations and with the values calculated using the formulas for a basin with a constant depth. The exceptions are the periods of the Helmholtz mode, for which underestimated values are obtained.
Keywords
seiches, partially closed pool, Helmholtz mode, the Sevastopol Bay, the Kholmskaya Bay, the Petrozavodskaya Bay
DOI
10.22449/2413-5577-2019-2-4-12