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利用MODIS光谱数据,采用经验反演法,建立了珠江口悬浮泥沙浓度与MODIS第一波段反射率的指数反演模型,模型能较好地反演浓度介于0.014~0.3/m3珠江河口的悬浮泥沙浓度。在此反演模型的基础上,对珠江河口反演出来的不同时段的悬沙分布进行统计分析,结合对应时段的珠江来水来沙、潮汐及风场的统计数据,分析悬浮泥沙的空间分布及季节变化特征,进一步探讨了不同影响因素对珠江河口悬沙输运扩散的影响。
Using MODIS spectral data and empirical inversion method, an exponential inversion model of suspended sediment concentration in the Pearl River Estuary and MODIS reflectivity in the first wave band was established. The model can well invert the Pearl River estuary with a concentration of 0.014 ~ 0.3 / m3 Suspended sediment concentration. Based on this inversion model, the distribution of suspended sediment in different periods retrieved from the Pearl River estuary was statistically analyzed, and the statistical data of sediment, tide and wind field in the Pearl River came from corresponding periods to analyze the space of suspended sediment Distribution and seasonal variation characteristics of the Pearl River Estuary to further explore the impact of different influencing factors on the Pearl River estuary suspended sediment transport and dispersion.