| 基于潮汐分带校正的海岸线遥感推算研究 |
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| 引用本文： | 崔丹丹,张东,吕林,谢伟军,陈玮彤.基于潮汐分带校正的海岸线遥感推算研究[J].海洋测绘,2017(5):52-55. |
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| 作者姓名： | 崔丹丹 张东 吕林 谢伟军 陈玮彤 |
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| 作者单位： | ;1.江苏省海域使用动态监视监测中心;2.江苏省地理信息资源开发与利用协同创新中心;3.南京师范大学地理科学学院 |
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| 基金项目： | 国家海洋局海域管理技术重点实验室开放基金(201405028)；江苏省测绘地理信息科研项目(JSCHKY201504) |
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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。
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| 关 键 词： | 遥感影像 海岸线 淤泥质海岸 潮汐分带校正 平均坡度 |
Coastline Remote Sensing Prediction Based on Tide Zoning Correction |
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| Abstract: | 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. |
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