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本文从信息分析理论出发,研究了悬浮泥沙的时空结构与时空分析模式。由于悬浮泥沙在时间变化上既具有周期性又具有随机性,在空间上存在区域差异,所以从信息分析理论角度,悬浮泥沙时间分析模式可分为基于时间跨度的时间分析模式和基于变动因素的时间分析模式,而悬浮泥沙空间分析模式可分为空间变化分析模式和空间类比分析模式。基于以上时空分析模式,本文选择珠江口及其邻近海域1995年～2000年152个时相的NOAA/AVHRR影像反演的悬浮泥沙浓度结果,及泥沙输移模型模拟的悬浮泥沙浓度,对珠江河口及深圳湾悬浮泥沙进行周期性变化分析、趋势面分析和垂向变化分析。研究表明,珠江河口悬浮泥沙具有明显的月变化、季节变化、丰枯水期变化及涨落潮变化规律,而深圳湾悬浮泥沙在垂向上则表现出由底层向上逐渐降低的变化规律。
Based on the theory of information analysis, this paper studies the spatio-temporal structure and spatio-temporal analysis mode of suspended sediment. Because of the periodicity and randomness of suspended sediment in time, there are spatial differences in space. Therefore, from the perspective of information analysis theory, the time-resolution model of suspended sediment can be divided into time-based temporal analysis model and time- Factor of time analysis model, and spatial analysis of suspended sediment can be divided into spatial analysis model and spatial analogy analysis model. Based on the above spatio-temporal analysis model, the results of suspended sediment concentrations retrieved from NOAA / AVHRR images of 152 phases from 1995 to 2000 in the Pearl River Estuary and its adjacent waters were selected and the suspended sediment concentrations simulated by sediment transport models were selected. Periodic change analysis, trend surface analysis and vertical change analysis of suspended sediment in Pearl River Estuary and Shenzhen Bay. The study shows that suspended sediment in the Pearl River estuary has obvious variation in monthly, seasonal, high-dry and low-water regimes and fluctuation of tide and tide. However, the suspended sediment in Shenzhen Bay shows a downward trend from bottom to top in the vertical direction.