大气与环境光学学报 ›› 2020, Vol. 15 ›› Issue (2): 134-142.

• 光学遥感 • 上一篇    下一篇

基于高分一号遥感卫星的渤海湾悬浮泥沙时空分布反演

蔡新立   

  1. 安徽建筑大学, 安徽合肥 230601
  • 出版日期:2020-03-28 发布日期:2020-03-24

Retrieve of Spatial and Temporal Distribution of Suspended Sediment in Bohai Bay Based on GF-1 Remote Sensing Satellite

CAI Xinli   

  1. Anhui Jianzhu University, Hefei 230601, China
  • Published:2020-03-28 Online:2020-03-24

摘要: 悬浮泥沙是评价II类水体水质的重要参数之一,近海岸水域悬浮泥沙对重金属、营养盐等具有一定的吸附作用,悬浮泥沙的分布特征在一定程度上反映着污染物的迁移和循环,因此研究悬浮泥沙对渤海湾建设和环境保护具有重要意义。为探究渤海湾水域悬浮泥沙浓度
和分布的变化特征,利用高分一号多光谱卫星影像,通过采用波段组合的方式对悬浮泥沙含量指数反演提取,反演得到2019年9个月的渤海湾悬浮泥沙指数,分析发现渤海湾悬浮泥沙含量在冬季受季风影响较高,春季和夏季的时候渤海湾高浓度悬浮泥沙向近岸收缩,秋季
悬浮泥沙分布格局有正在向冬季过渡的趋势,本文研究可为渤海湾的生态环境保护和工业开发提供重要的科学依据和参考价值。

关键词: 渤海湾, 悬浮泥沙, 泥沙指数, 波段组合, 时空分布

Abstract: Suspended sediment is one of the important parameters to evaluate the quality of Case II Waters. As the suspended sediment 
in coastal waters has a certain adsorption effect on heavy metals and nutrients,  its distribution characteristics can 
reflect transferring and circling of pollutants to some extent. Therefore, the study of suspended sediment is of great 
significance to the construction and environmental protection of Bohai Bay, China. In order to explore the variations of 
sediment index and distribution of suspended sediment in Bohai Bay, the suspended sediment index of the Bohai Bay is 
retrieved by band combination from the multi-spectral satellite image of GF-1, and the suspended sediment indexes of 
the nine months in 2019 are obtained. It is found that the suspended sediment in  Bohai Bay is greatly influenced 
by monsoon in winter, and in spring and summer, the suspended sediment of high concentration shrinks towards 
nearshore. Besides, the distribution pattern of suspended sediment in fall has a trend of transition to that of 
winter. The study provides an important scientific basis and reference for the ecological environment protection 
and industrial development in Bohai Bay.

Key words: Bohai Bay, suspended sediment, sediment index, band combination, temporal and spatial contribution