摘要
本文采用Mike21 HD数值模拟软件模拟了2002和2020年莱州湾的水动力条件变化,结果表明:与2002年相比,2020年莱州湾中部流速变化较小,西部流速略有增加、东部流速略有减小,变化值介于0~0.05 m/s之间;莱州湾口门一个月的落潮通量减小约1.70×10^(9)m^(3)(变化率约0.43%),涨潮通量减小约1.47×10^(9)m^(3)(变化率约0.38%),净通量减小约2.30×10^(8)m^(3)(变化率约6.85%);莱州湾东部海域30 d的水体交换率减小约2%~10%,潍坊港防波堤堤头处和莱州湾中部海域半交换周期呈增大趋势,增加值最大可达25 d。因此,莱州湾海洋开发活动导致莱州湾潮通量和海域整体水体交换率减小,半交换周期增大,不利于污染物的扩散,降低了莱州湾水环境承载力。
This article simulates the hydrodynamic environment of the Laizhou bay during 2002 and 2022 by Mike21HD numerical simulation method.Compared with 2002,the results show that the flow velocity in the central part of Laizhou Bay changed little,the velocity in the west part increased slightly,the velocity in the east part decreased slightly,and the variation value was between 0~0.05m/s in 2020.The ebb flux decreased about 1.70×10^(9)m^(3)(change rate is about 0.43%),the flood flux decreased about 1.47×10^(9)m^(3)(change rate is about 0.38%),and the net flux decreased about 2.30×10^(8)m^(3)(change rate is about 6.85%)in a month.The 30-day water exchange rate in the eastern waters of Laizhou Bay decreased by about 2%~10%.As a result of Laizhou Bay ocean development,the tide flux and the total water exchange rate in the Laizhou Bay Sea area decreased and the half water exchange time increased.In this case,it was not conducive to the spread of pollutants,reducing the water carrying capacity of the Laizhou Bay.
作者
于晓霞
王占金
冷星
刘德龙
杨雪娜
张启超
李爱华
Yu Xiaoxia;Wang Zhanjin;Leng Xing;Liu Delong;Yang Xuena;Zhang Qichao;Li Aihua(Shandong Academy for Environmental Planning,Jinan 250000,China;Ocean University of China,Qingdao 266100,China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第8期132-139,共8页
Periodical of Ocean University of China
基金
国家重点研究发展计划项目(2018YFC1407604)资助。
关键词
莱州湾
潮通量
水动力
水体交换率
Laizhou Bay
tidal fluxes
hydrodynamics
water exchange
