| 基于可变移动窗口方法估算太湖泥沙环流运动的本征尺度 |
| Using Moving Window Approach to Estimate the Intrinsic Scale of the Circulation of Suspended Sediment Movement in Taihu Lake |
| 投稿时间：2011-01-24 修订日期：2011-03-28 |
| DOI： |
| 中文关键词:本征尺度 移动窗口方法 悬浮泥沙浓度 太湖 遥感 |
| 英文关键词:intrinsic scale moving window approach suspended sediment concentration Taihu Lake remote sensing |
| 基金项目:十一五国家科技支撑项目(2008BAC34B03);中国海陆地质地球物理系列图项目(GZH200900504)资助 |
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| 中文摘要: |
| 基于遥感反演获得的太湖悬浮泥沙浓度数据,利用移动窗口方法,分析探讨了平均局部方差和移动窗口尺寸的关系。在90～1 860 m移动窗口尺寸变化范围内,太湖悬浮泥沙浓度的平均局部方差随着移动窗口尺寸的增大而增大,且抛物线模型能较好的描述2者的关系,回归系数0.9959。通过对抛物线模型求最大值可知,局部方差最大值所对应的移动窗口尺寸为2 308.33 m,根据当时的风速和风向,考虑泥沙浓度空间分布与水体运动之间的相关性,该尺寸可以解释为太湖逆时针环流的本征尺度。 |
| 英文摘要: |
| Under the support of suspended sediment concentration of Taihu Lake estimated by remote sensing technology，the study used the moving window approach to analyze the relationship between average local variance and the size of moving window. It was found that the average local variance increased with the window's size. When thewindow's varied between 90 to 1 860 m，the parabola model produced good performance in describing the relationship between average local variance and the size of moving window. The size of moving window was 2 308. 33 m when maximum value of the parabola model has happened，it could be attributed to the intrinsic scale of the anticlock-wise circulation of suspended sediment in Taihu Lake.
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| 陈军,王保军,付军,高晓军.2011.基于可变移动窗口方法估算太湖泥沙环流运动的本征尺度[J].水生态学杂志,32(5):1-5. |
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