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引用本文:张怡辉,胡维平.台风影响下巢湖风浪特征研究.湖泊科学,2020,32(1):236-245. DOI:10.18307/2020.0122
ZHANG Yihui,HU Weiping.Wind wave characteristics of Lake Chaohu under the influence of typhoon. J. Lake Sci.2020,32(1):236-245. DOI:10.18307/2020.0122
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台风影响下巢湖风浪特征研究
张怡辉, 胡维平
中国科学院南京地理与湖泊研究所, 湖泊与环境国家重点实验室, 南京 210008
摘要:
基于实测和数值模拟方法分析了台风“摩羯”和“温比亚”过境巢湖流域时的影响.台风“摩羯”和“温比亚”过境时,在巢湖产生较大的风速和风浪过程,其中对东巢湖的影响最大,中巢湖次之,西巢湖最小.东巢湖、中巢湖、西巢湖在台风“摩羯”过境时出现了0.68、0.67和0.48 m的最大有效波高和2.25、2.33和1.95 s的最大平均波周期;而台风“温比亚”过境时则最大有效波高可达1.50、1.47和1.18 m,最大平均波周期可达2.99、3.04和2.74 s.影响较大的区域位于东巢湖与中巢湖连接的湖心水域,总体对东巢湖的影响最为显著,中巢湖次之,西巢湖最小.不同湖区湖心水域由于水深、风区长度大,往往是出现最大风浪强度的区域.
关键词:  台风  风浪  巢湖  有效波高
DOI:10.18307/2020.0122
分类号:
基金项目:国家水体污染控制与治理科技重大专项(2017ZX07603-005)资助.
Wind wave characteristics of Lake Chaohu under the influence of typhoon
ZHANG Yihui, HU Weiping
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China
Abstract:
Based on the observational data and numerical simulations, the impacts of typhoon "Yagi" and "Rumbia" at Chaohu Basin were analyzed in this paper. When "Yagi" and "Rumbia" passing, they produced a large wind speed and wind wave at the surface of Lake Chaohu, inducing the greatest impact at the east part of the lake and then followed by the middle and west part of the lake. The maximum significant wave heights were 0.68, 0.67 and 0.48 m, and the maximum average wave period were 2.25, 2.33 and 1.95 s, produced by the transiting of Typhoon "Yagi" in east, mid-, and west part of Lake Chaohu, respectively. While the maximum significant wave heights could reach 1.50, 1.47 and 1.18 m, and the maximum average wave periods could reach 2.99, 3.04 and 2.74 s when typhoon "Rumbia" passed through Lake Chaohu Basin. The mid-area between the east and middle of the lake was mostly influenced by typhoon, and the impact on the east part was the most significant, followed by the middle and the west parts of the lake. Due to the large water depth and long wind fetch, the lake middle zones are often the areas with the largest wave intensity.
Key words:  Typhoon  wind wave  Lake Chaohu  significant wave height
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