基于潮汐分带校正的海岸线遥感推算研究
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摘要
提出并实现了基于遥感技术和多站点潮位插值的淤泥质海岸线推算方案。利用多时相遥感影像提取出人工岸线和瞬时水边线,在控制站点潮汐调和分析的基础上,利用潮汐线性分带插值校正处理,赋予水边线离散点在影像成像时刻的实际潮位,进而根据三角函数相似性原理推算出岸滩的平均坡度和平均大潮高潮点位置,连接形成自然岸线,最终根据自然岸线与人工岸线合成得到海岸线的空间分布。实践应用证明,该方案得到的海岸线与现场测定的平均大潮高潮痕迹点相吻合,可为快速确定淤泥质海岸岸线,监测岸滩资源的空间变化提供方法与数据支撑。
In this paper,a coastline prediction scheme for the muddy coast region is put forward and realized based on multi-site tide level interpolation and Remote Sensing techniques.Firstly,artificial coast and instantaneous waterline are extracted from multiple remote sensing images.And then,tidal harmonic analysis together with the linear interpolation and zoning correction method are applied for actual tidal level obtainment at the discrete points along the waterline during the imaging time.The average slope of the bank and the average high tide point position are calculated under the trigonometric function similar principle.The discrete points are then connected to form the natural shoreline.The remotely sensed coastline is then combined and formed by the natural shoreline and the artificial shoreline.The practical application proves that the scheme of coastline is in coincidence with the in situ surveyed mean high water mark points.So this scheme can be used for fast determination of the muddy coastline.It can also provide the monitoring method and data support for the spatial variation of beach resources.
In this paper,a coastline prediction scheme for the muddy coast region is put forward and realized based on multi-site tide level interpolation and Remote Sensing techniques.Firstly,artificial coast and instantaneous waterline are extracted from multiple remote sensing images.And then,tidal harmonic analysis together with the linear interpolation and zoning correction method are applied for actual tidal level obtainment at the discrete points along the waterline during the imaging time.The average slope of the bank and the average high tide point position are calculated under the trigonometric function similar principle.The discrete points are then connected to form the natural shoreline.The remotely sensed coastline is then combined and formed by the natural shoreline and the artificial shoreline.The practical application proves that the scheme of coastline is in coincidence with the in situ surveyed mean high water mark points.So this scheme can be used for fast determination of the muddy coastline.It can also provide the monitoring method and data support for the spatial variation of beach resources.
引文
[1]PETROPOULOS G P,KALIVAS D P,GRIFFITHS H M,et.al.Remote Sensing and GIS analysis for mappingspatio-temporal changes of erosion and deposition of two M editerranean river deltas:The case of the Axios and Aliakmonas rivers,Greece[J].International Journal of Applied Earth Observation and Geoinformation,2015(35):217-228.
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[4]黄海军.苏北陆岸岸滩主要潮沟近期变迁的遥感解译[J].海岸工程,2002,21(1):24-28.
[5]刘燕春,张鹰.基于遥感岸线识别技术的射阳河口潮滩冲淤演变研究[J].海洋通报,2010,29(6):659-663.
[6]马小峰,赵冬至,邢小罡,等.海岸线卫星遥感提取方法研究[J].海洋环境科学,2007,26(2):185-189.
[7]沈芳,郜昂,吴建平,等.淤泥质潮滩水边线提取的遥感研究及DEM构建——以长江口九段沙为例[J].测绘学报,2008,37(1):102-107.
[8]李雪红,赵莹.基于遥感影像的海岸线提取技术研究进展[J].海洋测绘,2016,36(4):67-71.
[9]孙伟富,马毅,张杰,等.不同类型海岸线遥感解译标志建立和提取方法研究[J].测绘通报,2011(3):41-44.
[10]王李娟,牛铮,赵德刚,等.基于ETM遥感影像的海岸线提取与验证研究[J].遥感技术与应用,2010,25(2):235-239.
[11]PAWLOWICZ R,BEARDSLEY B,LENTZ S.Classical tidal harmonic analysis including error estimates in M ATLAB using T-TIDE[J].Computers&Geosciences,2002(28):929-937.
[12]黄辰虎,冯义楷,欧阳永忠.等.半日潮特征海域平均大潮高潮面的计算方法[J].海洋测绘,2016,36(2):21-25.
[2]RASULYA,NAGHDIFAR R,RASOLI M.Monitoring of Caspian Sea Coastline Changes Using Object-Oriented Techniques[J].Procedia Environmental Sciences,2010,2(1):416-426.
[3]索安宁,曹可,马红伟,等.海岸线分类体系探讨[J].地理科学,2015(7):933-937.
[4]黄海军.苏北陆岸岸滩主要潮沟近期变迁的遥感解译[J].海岸工程,2002,21(1):24-28.
[5]刘燕春,张鹰.基于遥感岸线识别技术的射阳河口潮滩冲淤演变研究[J].海洋通报,2010,29(6):659-663.
[6]马小峰,赵冬至,邢小罡,等.海岸线卫星遥感提取方法研究[J].海洋环境科学,2007,26(2):185-189.
[7]沈芳,郜昂,吴建平,等.淤泥质潮滩水边线提取的遥感研究及DEM构建——以长江口九段沙为例[J].测绘学报,2008,37(1):102-107.
[8]李雪红,赵莹.基于遥感影像的海岸线提取技术研究进展[J].海洋测绘,2016,36(4):67-71.
[9]孙伟富,马毅,张杰,等.不同类型海岸线遥感解译标志建立和提取方法研究[J].测绘通报,2011(3):41-44.
[10]王李娟,牛铮,赵德刚,等.基于ETM遥感影像的海岸线提取与验证研究[J].遥感技术与应用,2010,25(2):235-239.
[11]PAWLOWICZ R,BEARDSLEY B,LENTZ S.Classical tidal harmonic analysis including error estimates in M ATLAB using T-TIDE[J].Computers&Geosciences,2002(28):929-937.
[12]黄辰虎,冯义楷,欧阳永忠.等.半日潮特征海域平均大潮高潮面的计算方法[J].海洋测绘,2016,36(2):21-25.