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In this study,about 220 satellite images between 2000 and 2012 were obtained from FY-series,MODIS,CBERS,HJ-1A and HJ-1B to estimate the impact of duststorms on the South Yellow Sea(SYS),which serve as an important source of particles there.The analyzing results from the images support a total occurrence of 88 duststorms(including the locally-generated dusty weather) that affected the SYS during 2000–2012.The annual occurrence was about 4–10 times(10 times in 2000 and 2004;four times in 2009 and 2012),predominantly in March(29%),April(33%) and May(22%).By mapping the distribution of their frequency,the duststorms influencing the SYS were found primarily moving from the northwest(39 times,44.3%) and west(37 times,42%) to the study region with only 11 duststorms(12.5%) coming from the north and 1 duststorm(1%) from the southwest.We estimated that an annual amount of 0.5–3.5 million tons of sediment particles was brought to the SYS by the duststorms during 2000–2012. 相似文献
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利用2002—2015年的中等分辨率成像光谱仪(Moderate Resolution Imaging Spectroradiometer, MODIS)第4波段反射率产品对黄、东海边界的悬浮物输运情况进行了分析, 同时利用黄、东海2003年现场实测的悬浮物含量数据和这期间准实时的MODIS影像数据, 建立了基于MODIS第4波段遥感反射率的悬浮物含量遥感反演模型。基于该模型, 反演黄、东海表层悬浮物浓度, 并计算悬浮物扩散面积。利用反演得到的表层悬浮物浓度和悬浮物浓度垂向预测模型, 获取垂直方向上的悬浮物浓度, 同时结合水深、扩散面积数据, 计算特定时刻水体中的悬浮物含量。利用插值方法获得整个输运过程中各时刻水体中的悬浮物的含量, 计算各个时刻悬浮物含量的总和作为悬浮物的输送量。对2002年10月至2003年4月黄海向东海的悬浮输送量进行估算, 估算结果为153Mt。 相似文献
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