摘要
以典型半封闭海湾-烟台芝罘湾为研究对象,基于多时相遥感影像和地形资料,提取1976-2016年4个时期岸线数据,建立芝罘湾二维对流-扩散模型,采用水交换率研究岸线变迁影响下的芝罘湾水交换能力变化过程,针对岸线变化显著的芝罘湾西部,划分为5个子区域深入分析区域水交换能力的分异特征。结果表明:芝罘湾岸线不断背陆向海曲折增长,海湾西部岸线变化强烈,40 a间岸线增长58.17%,港口码头建设是引起岸线变化的主要原因。芝罘湾水交换能力呈现先增强(1976-1991年)而后减弱(1991-2016年)的特征,海湾平均半交换周期整体呈现增长趋势,2016年(127 h)较1976年(92 h)增长了35 h。芝罘湾西部水交换能力区域性差异较大,北港池、三港池和一港池的形成是芝罘湾水交换能力由强到弱变化的主要原因。
The Zhifu bay of Yantai,a typical semi-closed bay,was taken as our research object.Firstly,based on multi-temporal remote sensing images and topographic data,data of coastline was extracted in 4 time phases from 1976 to 2016.Then a 2 D advection-diffusion model of Zhifu bay was established by water exchange rate to study the evolution of its water exchange ability under the influence of coastline changes.The western Zhifu bay,whose coastline had changed significantly,was divided into 5 sub-regions to analyze heterogeneity of regional water exchange ability elaborately.The results showed that the coastline of Zhifu bay has been growing seaward tortuously,in which the western part has greatly changed and increased by 58.17% in the past 40 years.Construction of ports and jetties was the main cause of coastline variation.The water exchange ability of Zhifu bay firstly strengthened from 1976 to 1991,and then weakened during 1991~2016.The average half-life time showed an overall growth trend,and the time of 2016 was 127 h,increasing by 35 h compared with that of 1976(92 h).The regional disparity of water exchange ability varied widely in the west of Zhifu bay,and the formation of 3 harbors,the North Harbor,the Harbor III and the Harbor I,was the major contributor which weakened the water exchange ability of Zhifu bay.
作者
朱金龙
徐艳东
朱淑香
孙贵芹
魏潇
孙伟
ZHU Jin-long;XU Yan-dong;ZHU Shu-xiang;SUN Gui-qin;WEI Xiao;SUN Wei(Shandong Marine Resource and Environment Research Institute,Shandong Provincial Key Laboratory of Restoration for Marine Ecology,Yantai 264006,China;College of Environment Science and Engineering,Ocean University of China,Qingdao 266100,China;QingdaoBoyan Marine Environmental Science&Technology Co.,Ltd,Qingdao 266061,China)
出处
《海洋环境科学》
CAS
CSCD
北大核心
2020年第1期145-152,共8页
Marine Environmental Science
基金
国家海洋局海域管理技术重点实验室开放基金项目(201608)
国家海洋局海洋生态环境科学与工程重点实验室开放基金项目(MESE-2017-05)
山东省海洋与渔业科技创新计划项目(2017HY07)
关键词
岸线变迁
对流-扩散模型
水交换
芝罘湾
coastline changes
advection-diffusion model
water exchange
Zhifu bay
