| Application of effective medium approximation theory to ocean remote sensing under wave breaking |
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| 作者姓名： | WEI EnBo & LIU Ye Institute of Oceanology Chinese Academy of Sciences Qingdao China Graduate University of the Chinese Academy of Sciences Beijing China |
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| 作者单位： | WEI EnBo1 & LIU Ye1，2 1 Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China; 2 Graduate University of the Chinese Academy of Sciences，Beijing 100039，China |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | Based on the effective medium approximation theory of composites, the empirical model proposed by Pandey and Kakar is remedied to investigate the microwave emissivity of sea surface under wave breaking driven by strong wind. In the improved model, the effects of seawater bubbles, droplets and difference in temperature of air and sea interface (DTAS) on the emissivity of sea surface covered by whitecaps are discussed. The model results indicate that the effective emissivity of sea surface in-creases with DTAS increasing, and the impacts of bubble structures and thickness of whitecaps layer on the emissivity are included in the model by introducing the effective dielectric constant of whitecaps layer. Moreover, a good agreement is obtained by comparing the model results with the Rose’s ex-perimental data.
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| 收稿时间： | 30 December 2005 |
| 修稿时间： | 30 May 2006 |
Application of effective medium approximation theory to ocean remote sensing under wave breaking |
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| WEI EnBo & LIU Ye, Institute of Oceanology,Chinese Academy of Sciences,Qingdao ,China, Graduate University of the Chinese Academy of Sciences,Beijing ,China.Application of effective medium approximation theory to ocean remote sensing under wave breaking[J].Science in China(Earth Sciences),2007,50(3):474-480. |
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| Authors: | Wei EnBo Liu Ye |
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| Institution: | 1. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2. Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Based on the effective medium approximation theory of composites, the empirical model proposed by Pandey and Kakar is remedied
to investigate the microwave emissivity of sea surface under wave breaking driven by strong wind. In the improved model, the
effects of seawater bubbles, droplets and difference in temperature of air and sea interface (DTAS) on the emissivity of sea
surface covered by whitecaps are discussed. The model results indicate that the effective emissivity of sea surface increases
with DTAS increasing, and the impacts of bubble structures and thickness of whitecaps layer on the emissivity are included
in the model by introducing the effective dielectric constant of whitecaps layer. Moreover, a good agreement is obtained by
comparing the model results with the Rose’s experimental data.
Supported by the National Natural Science Foundation of China (Grant No. 40476062) and the National “863” Project of China
(Grant Nos. 2002AA639270 and 2002AA633130) |
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| Keywords: | wave breaking whitecaps emissivity effective medium approximation radiant intensity |
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