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OALib Journal期刊
ISSN: 2333-9721
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赤潮的高光谱监测及预警方法
Keywords: 海洋光学,光学浮标,监测及预警,赤潮
Abstract:
？有害赤潮发生频度有逐年增加的趋势,建设赤潮的早期监测和预警系统是一个难点。文章研究表明,珠江口赤潮前后,叶绿素a浓度和细胞密度变化范围分别为0.9—31.1mg？m-3和1.28×104—1.76×106cell？l-1,优势藻为聚生角毛藻;高光谱辐射计获取的光漫射衰减系数、遥感反射率和荧光强度可反演叶绿素a浓度和细胞密度,其中反演叶绿素a浓度的平均相对均方根差(rrms)为30.6%、33.8%和77.4%,而反演细胞密度的平均rrms为83.6%、83.9%和136.4%。因高光谱辐射计可以获取每小时或者更短时间尺度的数据,因此,装备了高光谱辐射计的光学浮标可用于赤潮监测与预警系统。
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