Effects of coastal reclamation on the wave fields in the Bohai Bay
围填海工程对渤海湾风浪场的影响

According to the variation of the Bohai Bay coast line from 2000 to 2010, we established the SWAN(Simulating Waves Nearshore) wave model forced by the ERA wind fields to simulate the wave fields of the Bohai Bay in the years of 2000 and 2010 to investigate how coastal reclamation affects wave fields, especially the influence of the wind waves. The variations of the wave fields near three harbors (the Caofeidian, Tianjin Port and the Huanghua Port), where the coastlines had been changed significantly, were analyzed. The results revealed that the significant wave heights decreased after the coastal reclamation, and the magnitude of decrease of the significant wave heights in the harbor basin and the tidal channels was bigger than that in the other area. Moreover, the locations of the three ports and the topography around them had the combined effects on the distributions of the wind waves near the three portal areas. The coastal reclamation had little influence of the significant wave heights, where the reduction was under 0.2 m, and cycleswell as time which had no changes compared with our experimental data.