Reflectivity of sea water containing red tide creatures is slightly lower than that of muddy water in TM3 waveband;it decreases slowly in TM4 waveband, and then decreased sharply in TM5 waveband.

• 含赤潮生物海水，TM3波段数值比含泥沙水稍低，在TM4波段下降平缓，到TM5波段才急剧下降。