Cui Tingwei^1,2, Ma Yi¹, Zhang Jie^1*, ¹Ocean University of Qingdao, Qingdao, Shandong, P.R.C., 266003, ²First Institute of Oceanography, S.O.A., Qingdao, Shandong, P.R.C., 266061

Abstract

Enclosed experiment of the red tide was carried out from July to September 2001. We got five species of biologies whose quantities of bion are dominant in the red tide. During the whole process from the beginning to their dying out for every specie, in situ water spectral measurements were carried out. After data processing, characteristic spectral curves of red tide water of different dominant species are got. Via comparison of characteristics of different spectral curves, we find that in the band region from 685 to 735 nanometers, spectral characteristics of red tide water is apparently different from that of non-red tide water. Compared to spectral curves of non-red tide water, spectral curves of red tide water have a strong reflectance apex in the above band region. As to spectral curves of red tide water of different dominant bion, the situations of reflectance apices are also different. Thus we can monitor the event of red tide and identify the dominant species by the application of the technology of airborne hyperspectral remote sensing.