石晓雨,张日东,张文静,张可玟.跨海大桥建设对胶州湾北部冬季结冰现象的影响[J].海洋通报,2018,(6):633-642
跨海大桥建设对胶州湾北部冬季结冰现象的影响
Impact of Jiaozhou bay cross-sea bridge on winter ice formation in northern Jiaozhou bay
投稿时间:2018-07-07  修订日期:2018-07-28
DOI:10.11840/j.issn.1001-6392.2018.06.004
中文关键词:  胶州湾  跨海大桥  海冰  气温  水动力  沉积
英文关键词:Jiaozhou Bay  cross-sea bridge  sea ice  air temperature  hydrodynamic  sedimentation
基金项目:中国海洋大学国家级大学生创新创业训练计划项目 (201710423057)
作者单位E-mail
石晓雨 中国海洋大学 环境科学与工程学院山东 青岛 266100 1261934789@qq.com 
张日东 中国海洋大学 环境科学与工程学院山东 青岛 266100  
张文静 中国海洋大学 环境科学与工程学院山东 青岛 266100  
张可玟 中国海洋大学 环境科学与工程学院山东 青岛 266100  
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中文摘要:
      本文利用台站观测、卫星遥感以及专项调查等多种数据,综合分析了近年来胶州湾典型水文气象要素的变化特征及建桥前后水动力环境等的变化对冬季冰情的影响。结果显示,建桥以来冰情较重的年份冬季气温和年最低气温均处于近 30年的低位,重冰期与年最低气温时段相吻合,且以跨海大桥为界,北部海湾结冰现象严重,而南部几乎无结冰。基于区域海洋水动力模型 (ECOM) 的模拟结果显示,跨海大桥建设可以从几个方面影响胶州湾北部海冰的生消,即大桥建设使胶州湾尤其是大桥北侧的水动力环境弱化,落潮时桥北侧水体堆积,涨潮时桥北侧向陆一侧水位减小;大桥对桥位南北 1.5 km 周围涨、落潮流场产生影响;流场的变化又使得悬浮物对流扩散和沉积物输运发生改变,大桥北侧局部区域水深变浅。
英文摘要:
      Using observations from coastal stations, satellite remote sensing,special surveys and other sources, this study conducts comprehensive analysis on the changing characteristics of the typical hydro-meteorological elements in Jiaozhou Bay in recent years, and the changes in the hydrodynamic environment before and after the bridge construction as well as the related impact on the local ice conditions in winter. The results show that both the winter temperature and annual minimum temperature in the heavy-ice years since the bridge construction were at low level of recent 30 years. The heavy ice period is consistent with the annual minimum temperature period. With the cross-sea bridge as the boundary, the ice in the northern Bay is severe, while there is hardly any ice in the south. The simulation results based on regional marine hydrodynamic model (ECOM-Estuary, Coastal and Ocean Model) show that Jiaozhou Bay cross-sea bridge can take impact on winter ice formation and disappear in northern Jiaozhou Bay at several aspects. The construction of the cross-sea bridge weakens the hydrodynamic environment in Jiaozhou Bay, especially that on the north side of the bridge. During ebb tide, the water on the north side of the bridge accumulates; while tide rises, the water level there decreases. The cross-sea bridge has an influence on the rise and the ebb flow around the north and south 1.5 km of the bridge position. Changes in the flow field cause convection spread of the suspended substance and transport of sediments to change. As a result, the water depth of partial area on the north side of the bridge becomes shallow.
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