摘要
选用2005-2007年福建省干季（10月～2月）三个时相中潮位的中巴卫星CCD数据，利用泥沙指数SI=（ch2＋ch3）／（ch2／ch3）提取厦门环东海域悬浮泥沙信息．与现场浊度的对比表明，该泥沙指数能较好地反映悬浮泥沙的相对分布．泥沙指数图像显示，该海域悬浮泥沙浓度分布具有浅海高、深海低，从两岸向中部降低的特点；与2005年10月相比，2007年1月整治过程中清淤吹填使海域面积有所减小，但湾中上部高、中高浓度泥沙明显增加；到2007年11月，清淤吹填基本完成，海域高、中高浓度悬浮泥沙总比2005年10月约减少14km2．综合整治使得整个环东海域悬浮泥沙含量明显降低．
CBERS CCD data of dry season from 2005 to 2007 were chosen to indicate the suspended sedi- ment change in Xiamen East coastal water area in these years. Sediment Index SI = （ ch2 ＋ ch3 ）/（ch2/ch3） was used to indicate water with different sediment levels. Compared with buoy turbidity, SI showed related dis- tribution of suspended sediment well. According to SI images, suspended sediment concentration was generally low in shoal and high in deep affected by the physiognomy and current in this area. The silt purge and filling in Jan. 2007 reduced the sea area and increased suspended sediment at upper and upper middle levels in northern and western bays, and in Nov. 2007, near the end of the silt purge and filling, suspended sediment at upper and upper middle levels decreased about 14 km2 compared with that in Oct. 2005. In general, Xiarnen East coastal area harness has visibly reduced the suspended sediment concentration.
出处
《厦门理工学院学报》
2009年第2期62-66,共5页
Journal of Xiamen University of Technology
基金
厦门市科技计划指导性项目(3502Z20077016)
关键词
厦门环东海域
遥感
悬浮泥沙
泥沙指数
Xiamen East coastal area
remote sensing
suspended sediment
sediment parameter
