THE TIDAL EFFECTS IN THE NORTHERN OB BAY.

摘要

In 2005, 2010-2012 AARI had performed a number of metocean research surveys in the northern part of Ob Bay for the aim of supporting the system of LNG transportation. These surveys were dealing with the hydrological and ice regimes of the water area. The parameters of tidal oscillations, tidal currents and tidal ice drift were estimated. The obtained data had determined a number of essential design solutions for Sabetta port. The main results of the tidal harmonic analysis in the northern part of the Ob Bay are given in the article. The harmonic analysis of the field materials was performed on the basis of the least-squares method's variant, developed in AARI. The results of this analysis describe completely the pattern of formation and propagation of the main tidal waves in the northern Ob Bay in the ice-free period. The values of mean spring and neap tidal levels and values of the tidal currents on the surface and bottom levels are calculated. For the local areas (uniform in the sense of tidal conditions) the values of mean spring and neap tidal current velocities are estimated.