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基于Google Earth卫星图像,选取长江、汉江、西江、湘江、黑龙江、密西西比河及额尔齐斯河中共计655个沙洲作为统计样本,分析了沙洲的面积与周长及最大长度与平均宽度的定量关系,探讨了沙洲形态与分汊比及沙洲平均宽度、面积、周长与河道宽度的关系。结果表明,沙洲面积与周长、河道宽度均呈幂函数关系,沙洲最大长度与平均宽度及沙洲平均宽度、周长与河道宽度均保持较强的线性相关,沙洲所处河道的分汊比一般保持在0.09～0.97之间。
Based on the Google Earth satellite images, a total of 655 sandbars in the Yangtze River, Hanjiang River, Xijiang River, Xiangjiang River, Heilongjiang River, Mississippi River and Irtysh River were selected as statistical samples to analyze the quantitative relationship between area, circumference, maximum length and average width of sandbar , Discussed the relationship between sandbar morphology and tridimensional ratio and average sandbank width, area, perimeter and river width. The results show that the area of the sandbar has a power function relationship with the perimeter and the width of the channel. The maximum length of the sandbar and the average width of the sandbar and the average width of the sandbar, the circumference and the width of the river channel all maintain a strong linear correlation. Maintain at between 0.09 ~ 0.97.