| 水体多次散射作用对分析模型f值贡献率的影响因素分析 |
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| 引用本文： | 黄昌春,李云梅,孙德勇,乐成峰.水体多次散射作用对分析模型f值贡献率的影响因素分析[J].海洋湖沼通报,2009(4). |
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| 作者姓名： | 黄昌春 李云梅 孙德勇 乐成峰 |
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| 作者单位： | 南京师范大学虚拟地理环境教育部重点实验室,江苏,南京,210046 |
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| 基金项目： | 国家自然科学基金项目，十一五国家科技支撑计划项目，江苏省2008年度普通高校研究生科研创新计划 |
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| 摘 要： | 基于HYDROLIGHT光学模拟软件模拟水表面以下辐照度比R(0~-)和参数f值,着重分析多次散射作用对f值的贡献率以及太阳天顶角、风速和b_b/(a+b_b)对贡献率的影响,结果表明:多次散射作用对参数f的贡献率受到太阳天顶角、风速和b_b/(a+b_b)的共同影响,使得多次散射作用具有一定的时空差异;贡献率P_(ms)在太阳天顶角从0(°)～85(°)的范围内,随太阳天顶角的增加呈现波动状态,但这种波动随b_b/(a+b_b)值的增加而减弱,P_(ms)在0m/s到4m/s的范围内存在较大的波动,而当风速增加到4m/s时,几乎不随风速的变化而变化;多次散射作用对参数f的贡献率最大值可以达到24.41%,因此在内陆湖泊高散射特性水体中必须考虑多次散射作用对R(0~-)的影响.
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| 关 键 词： | 多次散射 贡献率 模拟g值 |
ANALYSES OF THE INFLUENCE FACTORS OF CONTRIBUTION RATIO OF MULTIPLE SCATTERING PROCESS TO THE VALUE OF G IN WATER BODY |
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| HUANG Chuangchun,LI Yunmei,SUN Deyong,LE Chengfeng.ANALYSES OF THE INFLUENCE FACTORS OF CONTRIBUTION RATIO OF MULTIPLE SCATTERING PROCESS TO THE VALUE OF G IN WATER BODY[J].Transaction of Oceanology and Limnology,2009(4). |
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| Authors: | HUANG Chuangchun LI Yunmei SUN Deyong LE Chengfeng |
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| Abstract: | Based on the simulated data of R(0~-) and g simulated by the optical simulation software HYDROLIGHT, the contribution ratio influenced by the wind speeds, solar zenith angle and b_b/(a+b_b) were analyzed. The result indicates that: the contribution of the multiple scattering process to the value of g is affected by the wind speeds, solar zenith angle, and b_b/(a+b_b) together, so that the multiple scattering process have the spatial and temporal difference; the P_(ms) present fluctuate state with the increase of the solar zenith angle in the range of 0°to 85°, but this fluctuation decreases with the increase of b_b/(a+b_b) value. P_(ms) have largest fluctuation in the wind speeds range of 0m/s to 4m/s, but have no change with the wind speeds when the wind speeds are bigger than 4m/s; the maximum of contribution of multiple scattering process to the g value can reach to 24.41%, so the influence of multiple scattering process to the R(0~-) in the inland lake water must be considered. |
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| Keywords: | HYDROLIGHT multiple scattering contribution ratio HYDROLIGHT simulation the value of g |
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