1984～2012年海州湾海岸线时空演变研究

发布时间：2018-03-15 00:00

本文选题：海州湾　切入点：海岸线　出处：《海洋科学》2016年06期 　论文类型：期刊论文

【摘要】：以Landsat影像为数据源,通过改进归一化水体指数、二值化、潮位校正模型提取海岸线,使用数字海岸线分析系统(Digital Shoreline Analysis System,DSAS),对1984~2012年海州湾海岸线的时空演变进行了研究。结果表明,1984~2012年间海州湾海岸线整体以4.29 m/a向海洋推进,其中,48%的海岸出现侵蚀,侵蚀速率为22.83 m/a,侵蚀现象主要出现在大堤修建前的部分粉砂淤泥质海岸。52%的海岸出现淤积,淤积速率为25.90 m/a,淤积现象主要出现在人工海岸、河口海岸和受大堤影响的粉砂淤泥质海岸。海岸线时空演变研究有利于科学地规划、开发和管理海洋及其沿岸空间资源,并保证其环境及经济的可持续发展。
[Abstract]:Using Landsat image as data source, the shoreline was extracted by improving normalized water body index, binarization and tidal level correction model. The spatial and temporal evolution of Haizhou Bay coastline from 1984 to 2012 was studied by using Digital Shoreline Analysis system. The results show that the coastline of Haizhou Bay was pushed to sea by 4.29 m / a from 1984 to 2012, in which 48% of the coasts were eroded. The erosion rate is 22.83 m / a, and the erosion occurs mainly in the silt silt coasts before the construction of the embankment, and the deposition rate is 25.90 m / a, and the silt phenomenon mainly occurs on the artificial coast. The study on the temporal and spatial evolution of shoreline is beneficial to the scientific planning, development and management of the ocean and its coastal space resources, and to ensure the sustainable development of its environment and economy.
【作者单位】：淮海工学院测绘工程学院;海岛(礁)测绘技术国家测绘地理信息局重点实验室;
【基金】：国家海洋公益性行业科研专项(201105004) 江苏省海洋科学技术优势学科建设项目(2014137) 海岛(礁)测绘技术国家测绘地理信息局重点实验室资助项目(2014B09) 国家自然科学基金项目(41506106)~~
【分类号】：P737.1

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