Influence of sea ice on wave calculation in the Bohai Sea

被引：0

作者：

Zhang N. ^{[1
,2
,3
]}

Li S. ^{[1
]}

Geng S. ^{[2
]}

Zhang Q. ^{[3
]}

He X. ^{[4
]}

机构：

[1] Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment, Tianjin Chengjian University, Tianjin

[2] National Marine Data and Information Service, Tianjin

[3] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin

[4] Suwei (Tianjin) Material Technology Co., Ltd, Tianjin

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2021年 / 42卷 / 11期

关键词：

Effective wind area; Ice and water coexist; Ice concentration; Sea ice; SWAN model; Waves; Weighted percentage; Wind stress;

D O I：

10.11990/jheu.202007094

中图分类号：

学科分类号：

摘要：

To reasonably calculate wave conditions in the design process of sea ice-water coexistence, a wave calculation method, including the effects of ice, is proposed in this paper. The weighted percentage of linear changes in ice concentration is included in the wind stress equation of the SWAN model to simulate wave evolution under ice-water coexistent conditions; the period of 2011-2012 in the Bohai Sea is used to study the influence of sea ice on wave distribution. According to the simulated results, the area covered by sea ice accounts, at most, for 33.3% of the whole Bohai Sea area during the study period. However, the area affected by sea ice for the significant wave height and peak period accounts for, at most, 75.8% and 73.0%, respectively, of the whole Bohai Sea area. The significant wave height and peak period near the top of Liaodong Bay are reduced by a maximum of 70% in winter, while the attenuation in Bohai Bay and Laizhou Bay is up to 10%. The results show that the existence of sea ice not only blocks heat and momentum exchange between air and sea, but also reduces the influence of sea ice on the significant wave height and peak wave period in the area covered by ice and the effective wind area of the whole Bohai Sea. The influence of sea ice on the significant wave height and peak wave period is thus reduced in the ice-free area. Therefore, the influence of sea ice cannot be ignored in the calculation of design wave conditions in cold areas. © 2021, Editorial Department of Journal of HEU. All right reserved.

引用

页码：1604 / 1610

页数：6

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