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依据黄河三角洲潮滩海岸准同步断面实测地形点数据 ,进行地貌趋势面的多种技术方法处理。多项式回归方法能把握潮滩海岸三维形态的总趋势 ,忽略全部次一级形态特征 ;NearestNeighbor方法、Kriging方法和 Triangulation W/线性插值方法均可以显示总趋势面上次一级形态——潮滩海岸沟盆体系。其中 Triangulation W/线性插值法计算出的局部特征十分明显 ,但边界会产生很大误差。Kriging方法和 Nearest Neighbor方法在边界上处理得较好 ,Kriging方法图象过渡得非常自然 ,而 Nearest Neighbor方法相对保留了矩形的处理特征。趋势面分析表明 ,潮沟—潮盆体系的形成与发展是表征黄河三角洲潮滩海岸时空谱系发育进程的重要指标。
Based on the data of topographic points measured by the quasi-synchronic section of the tidal flat in the Yellow River Delta, a variety of technical methods are applied to deal with the geomorphic trend surface. The polynomial regression method can grasp the general tendency of tidal flat coast three-dimensional morphology and neglect all sub-first-order morphological features. NearestNeighbor method, Kriging method and Triangulation W / linear interpolation method can all display the second order form of the general trend surface-tidal flat coast Ditch basin system. Triangulation W / linear interpolation method is very obvious local characteristics, but the boundary will have a great error. The Kriging method and the Nearest Neighbor method are better at the boundary. The Kriging method has a very natural image transition. However, the Nearest Neighbor method retains the rectangular processing features relatively. Trend surface analysis shows that the formation and development of the tidal basin-tidal basin system is an important indicator of the development of space-time lineages of the tidal flat in the Yellow River Delta.