| 星载微波SSM/I多时相辐射观测的特征指数监测与评估2003年7月中国淮河流域汛情 |
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| 引用本文： | 颜锋华,金亚秋.星载微波SSM/I多时相辐射观测的特征指数监测与评估2003年7月中国淮河流域汛情[J].地球物理学报,2005,48(4):775-779. |
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| 作者姓名： | 颜锋华 金亚秋 |
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| 作者单位： | 复旦大学波散射与遥感信息国家教育部重点实验室,上海,200433;复旦大学波散射与遥感信息国家教育部重点实验室,上海,200433 |
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| 基金项目： | 国家重点基础研究规划项目(001CB309401)，国家自然科学基金项目(60171009)资助. |
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| 摘 要： | 由辐射传输方程推导星载被动微波遥感SSM/I辐射观测的极化指数PI，凸现地表土壤湿度的变化与距平异常ΔnPI，用特征性指数PI、ΔnPI和散射指数SI来监测大尺度陆地地面的降雨和地区土壤湿度、洪涝汛情的变化.用中国淮河流域7年同月SSM/I观测数据的平均<PI>，洪涝期间的PI，ΔnPI和SI监测该流域2003年7月的洪涝汛情.提出距平异常值指数K分布，定量评估了洪涝汛情的范围和程度.
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| 关 键 词： | SSM/I 多时相辐射观测 特征指数 异常分布 洪涝监测 |
| 文章编号： | 0001-5733(2005)04-0775-05 |
| 收稿时间： | 2004-05-19 |
| 修稿时间： | 2005-03-25 |
Monitoring China's Huaihe flooding in summer 2003 using characteristic indexes derived from microwave SSM/I multi_temporal observations |
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| YAN Feng-Hua,JIN Ya-qiu.Monitoring China's Huaihe flooding in summer 2003 using characteristic indexes derived from microwave SSM/I multi_temporal observations[J].Chinese Journal of Geophysics,2005,48(4):775-779. |
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| Authors: | YAN Feng-Hua JIN Ya-qiu |
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| Institution: | Key Laboratory of Wave Scattering and Remote Sensing Information (Ministry of Education), Fudan University, Shanghai 200433, China |
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| Abstract: | Polarization index PI of the SSM/I microwave radiance is derived from the radiative transfer equation, and is applied to identifying spatial and temporal variations of the terrain surface moisture. The index PI, its deviation from the multi year monthly average <PI>, ΔnPI, and a scattering index SI are utilized to monitor the flooding event occurred around China's Huaihe river in July 2003 An anomalous index K, based on statistics of the indices, is defined to quantitatively evaluate flooding situation over vast areas. |
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| Keywords: | SSM/I Multi-temporal observations Characteristic indexes Anomaly Flooding |
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