渤海天文-风暴潮数值模拟和一种多年一遇极值水位的计算方法

The numerical modeling of astronomy-storm tide in the Bohai Sea and a calculation method for extreme water levels of multiyear return periods

在渤海选用了82个强天气过程,利用三维模式模拟了海区的天文-风暴潮,模式经实测资料检验,获得了较满意的模拟结果。根据渤海沿岸主要验潮站观测年极值高(低)水位和年极值风增(减)水所得到的多年一遇高(低)水位和多年一遇风增(减)水,以及天文最高(最低)潮位,建立了由多年一遇风增(减)水和天文最高(最低)潮位的线性组合计算多年一遇高(低)水位的计算公式,并以此公式推算了渤海海区5个典型地区的多年一遇高(低)水位,供海洋工程设计时使用。

The astronomy-storm tide in the Bohai Sea was modeled by using three-dimensional model and data from 82 selected strong weather processes. The model was tested with real observation data, and satisfactory results were obtained. Form the astronomical highest (lowest) tide levels, the extreme high(low) water levels of multiyear return periods and the extrerne-storm set-up (set-down) of multiyear return periods, which were obtained by the yearly extreme high (low) water levels and the yearly extreme storm set-up (set-down) observed at the coastal hydrographic stations, A linear combination formula for calculating the extreme water levels of multiyear return periods at 5 typical areas in the Bohai Sea is established. The formula can be used in the design of marine engineeering projects.