小入射角下海浪后向散射系数不对称性和各向异性分析验证

发布时间：2018-03-22 10:15

本文选题：机载波谱仪　切入点：海浪　出处：《海洋学报》2016年11期 　论文类型：期刊论文

【摘要】：基于北京遥测技术研究所机载波谱仪实测数据以及ECMWF提供的风场数据,分析了不同风速条件下小入射角海浪平均后向散射系数不对称性与各向异性随入射角的变化特性,并对导致这一现象的原因进行了初步分析。结果表明:小入射角下,海浪平均后向散射系数随入射角增大呈现递减趋势并在18°时达到某一稳定值,之后基本维持不变;海浪后向散射系数不对称性与各向异性均随入射角增大呈现递增趋势,同样在18°增大至某一稳定值,之后基本维持不变;低风速条件下,海浪不对称性和各向异性与风速有关,且风速越大不对称性与各向异性越明显。
[Abstract]:Based on the measured data from the carrier spectrometer of Beijing Telemetry Institute and the wind field data provided by ECMWF, the asymmetry and anisotropy of the average backscattering coefficient of the small incident angle waves with different wind speeds are analyzed, and the variation characteristics of the asymmetry and anisotropy with the incident angle are analyzed. The results show that the average backscatter coefficient decreases with the increase of incident angle and reaches a certain stable value at 18 掳, and then remains unchanged. The asymmetry and anisotropy of wave backscattering coefficient show an increasing trend with the increase of incident angle, and increase to a certain stable value at 18 掳, and then remain unchanged, while at low wind speed, wave asymmetry and anisotropy are related to wind speed. The asymmetry and anisotropy of wind speed are more obvious.
【作者单位】：中国石油大学(华东)地球科学与技术学院;国家海洋局第一海洋研究所;北京遥测技术研究所;
【基金】：国家863计划(SS2013AA091206) 国家自然科学基金青年基金(2013AA09A505,41406197)
【分类号】：P715.7

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