“纳沙”台风对乌石渔港引起的台风浪的数值研究

Numerical Study on the Typhoon Wave around Wushi Fishing Port by Typhoon NESAT

利用MIKE21 SW波浪模型,对台风"纳沙"过境期间台湾宜兰县乌石渔港附近波浪特征进行数值模拟。结果表明,在"纳沙"影响下,在渔港近岸海域形成了最大有效波高超过5.5 m的巨浪,持续时间长达12 h。乌石渔港在多级防波堤的掩护下,港内有效波高逐渐减小,乌石渔港内有效波高低于0.5 m的有效避风面积达到总港域面积的24.2%。

The MIKE21 SW wave model was used to simulate the wave characteristics of the Wushi fishing port in Yilan County, Taiwan Province during the typhoon “NESAT” period. The results showed that under the influence of “NESAT”, huge waves with a maximum significant wave height of more than 5.5 m were formed in the coastal waters of the fishing port for a duration of up to 12 hours. Under the shelter of the double breakwater, the significant wave height of the Wushi fishing port was gradually decreasing. The effective sheltered area in Wushi fishing port where the significant wave height was below 0.5 m was 24.2% of the total port area.