%0 Journal Article
%T Scattering characteristics of alga Amphidinium carerae Hulburt in the cycle of growth and decay<br>强壮前沟藻生消过程中水体的散射特性
%A WANG Lin
%A ZHAO Dongzhi
%A JIANG Lingling
%A YANG Jianhong
%A LIU Yongjian
%A WANG Xiang
%A <br>王林
%A 赵冬至
%A 姜玲玲
%A 杨建洪
%A 刘永健
%A 王祥
%J 环境科学学报
%D 2013
%I 
%X Based on the measured data in an algal culture experiment in July 2011, the present study analyzed scattering characteristics of alga Amphidinium carerae Hulburt in the cycle of growth and decay.The results showed that, in the whole culture period of alga (21 days), the growth phase started from the 1st day till the 15th day, then the alga entered into its decay phase.Meanwhile, the scattering spectra varied significantly.Under low-chlorophyll conditions, the scattering coefficient declined as a power function with the wavelength increasing.But when the chlorophyll concentration was high, the scattering coefficient nearly became an increasing linear function of wavelength at blue-green band, and scattering trough at red band was deepened remarkably due to strong absorption of chlorophyll-a.However, either in the growth or decay phase, the regressed coefficient of determination of power function between chlorophyll concentration and spectral scattering coefficient was found to increase gradually with wavelength.The best correlativity appeared at 750 nm (R2 reached 0.95 and 0.97, respectively for the growth and decay phase).Moreover, in the growth phase, the proportion of integrated scattering coefficient in the blue band for the whole visible light region decreased gradually, while the proportion of scattering coefficient increased obviously in the red band.As for the green band, the proportion increased only slightly.Correspondingly, the water color gradually varied from blue-green to red-brown.Contrarily, in the decay phase, the change of water color was totally reversed.Furthermore, the positive correlations were acquired between chlorophyll concentration and the ratios of scattering coefficients between different bands (green-to-blue, red-to-blue and red-to-green), which proved that the water color changed toward longer wavelength with increase of chlorophyll concentration.
%K Amphidinium carterae Hulburt
%K red tide
%K scattering coefficient
%K ocean color variation<br>强壮前沟藻
%K 赤潮
%K 散射系数
%K 水色变化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=9C65539B20E123FCF1B6AE89C3A3FEB7&yid=FF7AA908D58E97FA&vid=27746BCEEE58E9DC&iid=CA4FD0336C81A37A&sid=480C51B1F0CE0AB6&eid=8477411EEDB08A86&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=22