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OALib Journal期刊
ISSN: 2333-9721
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大亚湾水体后向散射比率的光谱变化
Keywords: 后向散射比率,光谱变化,颗粒粒径分布,颗粒折射率
Abstract:
？采用2007年5月大亚湾浮标定点航次采集的生物-光学数据,分析了大亚湾水体后向散射比率的光谱变化及其影响因素。分析结果表明,660nm处后向散射比率变化范围在0.0040—0.0245之间,均值为0.0082±0.0032,实测后向散射比率光谱波段间的相对变化不超过15%;颗粒后向散射比率随着叶绿素a浓度增加呈减小的趋势,高叶绿素浓度显著对应较低的后向散射比率;粒径是影响大亚湾水体后向散射比率的重要因素之一,随着水体中junge粒级斜率的增大,颗粒后向散射比率显著增大;折射率的变化也对后向散射比率产生一定影响,类似的水体粒径分布情况下,浮游植物与非藻类物质相对贡献的变化将导致折射率的明显变化,并将主导水体后向散射比率的变化。
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