基于GF-4卫星遥感数据的赤潮信息识别方法——以秦皇岛海域为例  

Red Tide Information Identification Method Based on GF-4 Satellite Remote Sensing Data-A Case Study of Qinhuangdao Sea Area

作　　者：宋彦[1,2] 王宁 丁一[1,2] 辛蕾 孙青[1,2] 姜涛 SONG Yan;WANG Ning;DING Yi

机构地区：[1]国家海洋局北海预报中心,山东青岛266061 [2]山东省海洋生态环境与防灾减灾重点实验室,山东青岛266061 [3]91033部队,山东青岛266061

出　　处：《科技创新与应用》2021年第34期9-14,共6页Technology Innovation and Application

基　　金：国家重点研发计划(编号:2017YFC1405300);自然资源部北海局海洋科技项目(编号:2018B03)。

摘　　要：渤海是我国海洋生态监测保障的重要区域,特别是秦皇岛海域,是赤潮灾害的重点监控区。卫星遥感监测方式在赤潮灾害监测中优势突出,加强赤潮遥感监测方法研究具有重要意义。文章通过分析赤潮水体和非赤潮水体的光谱特性差异,构建了针对GF-4卫星波段特征的水体光谱特性曲线,提出了基于GF-4卫星第2、3、5波段的三种赤潮信息识别方法,并将方法应用于秦皇岛海域赤潮监测。结果表明,双波段差值法识别赤潮信息效果较好。该研究可为秦皇岛附近海域赤潮监测工作提供技术支持。The Bohai Sea is an important area for marine ecological monitoring and protection in China,especially in the Qinhuangdao sea area,which is a key monitoring area for red tide disasters.Satellite remote sensing monitoring method has outstanding advantages in red tide disaster monitoring.It is of great significance to strengthen the research on red tide remote sensing monitoring method.By analyzing the differences of spectral characteristics between red tide water and non-red tide water,this paper constructs the spectral characteristic curve of water body according to the characteristics of GF-4 satellite band.On this basis,three kinds of red tide water recognition methods based on GF-4 satellite data band 2,3 and 5 are proposed and applied to the red tide monitoring in Qinhuangdao sea area.The results show that the dual band difference method is more effective in identifying red tide water.This study can provide technical support for the red tide monitoring in the Qinhuangdao sea area.

关 键 词：GF-4 赤潮 秦皇岛海域 双波段比值法 双波段差值法 多波段差值比值法 

分 类 号：P76[天文地球—海洋科学]