潍坊人工沙滩海滩剖面演变特征及应用经验正交函数分析

岳保静; 颜中辉; 高茂生; 邵家旺; 侯国华; 白伟明; 叶永玉

doi:10.16562/j.cnki.0256-1492.2016.06.024

潍坊人工沙滩海滩剖面演变特征及应用经验正交函数分析

1. 国土资源部油气资源和环境地质重点实验室, 中国地质调查局青岛海洋地质研究所, 青岛 266071;
2. 青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室, 青岛 266061

基金项目:

海洋地质保障工程项目(GZH201200505,DD20160144)

国家自然科学基金项目(41106060)

详细信息

作者简介:
岳保静(1981-),女,硕士,海洋地质专业,E-mail:selinayue1022@hotmail.com

中图分类号: P736.21
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- 文章访问数: 2235
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出版历程
- 收稿日期: 2016-06-19
- 修回日期: 2016-10-27

EVOLUTION CHARACTERISTICS OF WEIFANG ARTIFICIAL BEACH AND THE EOF ANALYSIS ON PROFILE CHANGE

1. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao, 266071, China;
2. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China

摘要

摘要: 对潍坊人工沙滩二期工程竣工后海滩实测地形剖面进行研究,应用经验正交函数(EOF)提取海滩2013年5月至2015年11月6次剖面监测数据中的前3个模态的空间特征函数和时间特征函数,分析竣工养护后海滩剖面的时空演变特征及海滩的平面变化特征。第一特征函数表示竣工后海滩的总体冲淤变化,受到东西两侧丁坝加长和中间T型坝修建的影响,剖面的侵蚀程度较一期工程明显减小;第二特征函数表示受地形和水动力作用影响,前滨带出现滩肩剖面和沙坝剖面的相互转化;第三特征函数反映风暴潮、人为因素等偶然因素的影响;从平面特征来看,人工沙滩中部、东部较西部侵蚀严重。可见,二期工程建设起到了优化的目的,大大改善了人工沙滩的侵蚀,但仍需要持续有规律的对海滩进行监测,进一步深化对人工养护沙滩建设和维护的认识。
- 人工沙滩 /
- 经验正交函数 /
- 淤泥质潮滩 /
- 时空演化
Abstract: We made a study of the measured beach profiles in the Weifang artificial beach after the second stage of the nourishment project.Empirical Orthogonal Function(EOF) is applied to analyze the spatial and temporal features of the beach profiles and the evolutionary features of the beach from May 2013 to November 2015.The results indicate that the beach profile evolution includes 3 phases.The first phase represents the overall change of the beach,and the erosion is significantly decreased compared with the first-stage project after the establishment of the groins on both east and west sides and a new T-type groin in the middle of the beach;The second phase represents the inter-conversion between the beach ridge and the beach bar in the foreshore area affected by topography and hydrodynamic interaction;the third phase represents the accidental disturbance of storm surges and human factor.The plane view of the beach shows that erosion is more serious in the central and eastern parts than in the west part of the artificial beach.The purpose of beach optimization is achieved after the second-stage of the project.It is necessary to monitor the beach regularly to understand more for future construction and maintenance of the artificial beach.
- artificial beach /
- Empirical Orthogonal Function(EOF) /
- muddy tidal flat /
- evolution characteristics

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