摘要
获取潮滩地形是合理开发利用潮间带滩涂最重要的指标之一。以江苏岸外条子泥为研究区,以地貌特征线为基础,结合该区域自建的4座水位测站的水位数据、实测断面数据和不同潮情下的遥感影像,模拟2013年和2014年两个连续水文年的潮滩地形。采用最邻近插值算法计算地貌特征线的高程值,进一步采用自然邻近法插值构建出条子泥滩涂地形。采用实测地形数据进行检验,结果表明:模拟的DEM能够反映当前潮滩的基本形态,平面精度达30m,垂直精度达25cm。潮滩形态年际变化较为剧烈,2006-2014年总体呈淤积趋势。
Tidal flat terrain is one of the most important indexes for us to exploit tidal flat legitimately.Based on geography characteristic lines,the tidal flat terrain has been built up in the study area of Tiaozini tidal flat field off Jiangsu Coast of hydrological years 2013 and 2014,and with water level data of 4self-built hydrological stations,profile data of measured and remote sensing images under different tide situations.Using the nearest interpolation algorithm,the elevation calculation of the geography characteristic lines is completed.And then the tidal flat terrain is built with natural neighbor interpolation.The accuracy is confirmed by actual measurement data.Results show that the DEM can reflect the current basic form of tidal flat and the position accuracy approaches 30 mand the elevation accuracy approaches 25 cm.
出处
《地理与地理信息科学》
CSCD
北大核心
2016年第1期78-83,共6页
Geography and Geo-Information Science
基金
国家科技支撑计划课题(2012BAB03B01)
国家海洋公益性行业科研专项(201005006)
江苏省基础研究计划(自然科学基金)项目(BK2012414)
关键词
潮滩地形
地貌特征线
遥感遥测
条子泥
tidal flat terrain
landscape characteristic lines
remote sensing and measuring
Tiaozini
