摘要
利用Landsat-5／7卫星影像资料和实测含沙量资料，建立温州海区悬沙遥感模式，对表层水体悬沙分布及泥沙运动情况进行分析。研究表明，该海区水体表层平均含沙量较高，为0．1～0．3kg／m^3，受落潮流和N—NE向风浪作用及江浙沿岸流的影响，泥沙有自北向南沿岸输移的趋势，并在距浙江沿岸30～40km范围内有一条明显的泥沙浑浊带，其范围由北向南逐渐减少，表层水体含沙量也由北向南逐渐降低，对浙江沿岸的泥沙运动产生重要影响。
According to the Landsat-5/7 remote sensing data and in - situ silt content data acquired quasi-synchronously, the quantitative remote sensing model for suspended sediment in the coastal waters of Wenzhou is set up. The results show surface suspended silt content is 0.1～0.3 kg/m^3 in general, and current, wave, and coastwise flow control the distribution of suspended sediment. Suspended sediment transport is from north to south along seacoast and its seasonal change shows that winter concentration is higher than summer by the coastwise flow action. At the same time, there is a zone of sediment turbidity which is 30～40 km away from Zhejiang seacoast. The bound of zone minishes from north to south and surface sediment concentration reduces gradually. The synthetic analyses are given on the source, movement rules. The distribution of suspended sediment is similar to underwater landform i. e. there exist high suspended sediment concentration in shallow water areas and low suspended sediment concentration in deepwater areas.
出处
《地理与地理信息科学》
CSCD
北大核心
2007年第2期47-50,共4页
Geography and Geo-Information Science
基金
国家自然科学基金项目(50579024)
关键词
温州海区
悬沙
遥感
泥沙浑浊带
sea area of Wenzhou
suspended sediment
remote sensing
zone of sediment turbidity
