남해의 구난환경 위험성 분석을 위한 극치 조석 산정

Abstract

In marine salvage, extreme tide heights and tidal currents are necessary to anchor an accidental ship. In order to meet this requirement, a simple scheme was developed which yields the spatial informations on the extreme tide from the distribution of highest astronomical tide heights using a relationship between extreme and highest astronomical tides at the standard port. This method is the inference method based on horizontally homogeneity of tide. This scheme was applied to estimate extreme tide heights and tidal currents in the Namhae (southern sea of Korea). The highest astronomical tide heights are computed by amplitude of four major constituents (M2, S2, K1, O1 tide). The estimated extreme tide heights are ranged from 70 cm to 260 cm for return period 50 years and from 80cm to 270cm for return period 100 years, respectively. For return period 100 years, extreme tidal currents show value of 1.55 times as stronger as those of normal state.