| 摘要: |
| 通过对遥感监测泥沙原理和MODIS传感器特征的分析，应用不同时间的MODIS影像进行长江口及其附近海域的悬浮泥沙监测。结果表明：(1)长江口及其附近海域悬浮泥沙含量较高，其中杭州湾悬浮泥沙浓度高于长江口；(2)长江口及其附近海域水体中的泥沙由再悬浮形成，且冬季泥沙浓度和范围均大于春季；(3)人海径流与海洋动力是影响河口沿岸及近海水域水体悬浮泥沙含量的主要因素，其中海洋动力的潮流和波浪是主导控制因素。 |
| 关键词: 长江口 悬浮泥沙 遥感监测 MODIS影像 |
| DOI： |
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| 基金项目:国家自然科学基金项目(30170790)；教育部重点科技项目(03157) |
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| Remote sensing detection of suspended sediment in the Yangtse River Estuary by MODIS images |
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| Abstract: |
| Remote sensing detection of suspended sediment was carried out in the Yangtse River estuary by the utility of MODIS images and analysis of principles of sediment remote sensing detection.The results show that:(1) the suspended sediment quantity of the immediate offshore area is higher,thereinto,the suspended sediment concentration of Hangzhou bay is higher than that of the Yangtse river estuary.(2) the suspended sediment in the yangtse river estuary and near shore zone come into being from resupension,and the density and area of sediment in winter is higher than that in spring;(3) surface runoff and ocean motive are the main factors affecting the suspended sediment concentration of river estuary zone and water area near ocean,and the tide of ocean motive and wave are dominant factors. |
| Key words: the yangtse river estuary the suspended sediment Remote Sensing detection MODIS images |
