| 应用CDOM光学特性估算水体COD——以辽宁省盘锦市双台子河和辽东湾为例 |
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| 引用本文： | 黄妙芬,宋庆君,毛志华,邢旭峰,白贞爱,古平,赵祖龙. 应用CDOM光学特性估算水体COD——以辽宁省盘锦市双台子河和辽东湾为例[J]. 海洋学报, 2011, 33(3): 47-54 |
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| 作者姓名： | 黄妙芬 宋庆君 毛志华 邢旭峰 白贞爱 古平 赵祖龙 |
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| 作者单位： | 1.大连海洋大学 海洋工程学院,辽宁 大连 116023 |
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| 基金项目： | 国家海洋局公益项目"海水有机污染物测量仪试验方法研究"(201005025-04);国家自然科学基金项目"水体石油类污染遥感探测机理和识别模型研究"(40771196);"十一五"科技支撑项目"基于环境一号等国产卫星的环境遥感监测关键技术及软件研究"(2008BAC34B05-5)。 |
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| 摘 要： | 有色可溶性有机物(chromophoric dissolved organic matter,CDOM)是水体中一类重要的光吸收物质,在水色遥感中,其光学特性主要以440 nm处的吸收系数和光谱斜率来表征,利用这些光学特性进行水环境要素遥感反演具有较广泛的应用前景.化学需氧量(chemical oxygen deman...
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| 关 键 词： | CDOM 光学特性 HJ-1/CCD 化学需氧量COD 遥感模式 |
| 收稿时间： | 2010-09-12 |
The retrieval model for COD in waters using optical absorption properties of CDOM a case study at the Shuangtaizi River and the Liaodong Gulf |
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| HUANG Miao-fen,SONG Qing-jun,MAO Zhi-hu,XING Xu-feng,BAI Zhen-ai,GU Ping and ZHAO Zu-long. The retrieval model for COD in waters using optical absorption properties of CDOM a case study at the Shuangtaizi River and the Liaodong Gulf[J]. Acta Oceanologica Sinica (in Chinese), 2011, 33(3): 47-54 |
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| Authors: | HUANG Miao-fen SONG Qing-jun MAO Zhi-hu XING Xu-feng BAI Zhen-ai GU Ping ZHAO Zu-long |
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| Affiliation: | 1.School of Marine Engineering, Dalian Ocean University, Dalian 116023, China2.National Satellite Ocean Application Service,State Oceanic Administration, Beijing 100081,China3.Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012,China4.Department of Quality and Security and Environmental Protection,Liaohe Oil Field, Panjin 124010, China |
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| Abstract: | Chromophoric dissolved organic matter(CDOM) is the pool of absorbing substance for light in water. In the fields of water colour remote sensing, its optical absorption properties are mainly described with an absorption coefficient and a spectral slope. It will be widely used to retrieve water quality parameters with the spectral characteristicl of absorption by yellow substances. Chemical oxygen demand(COD) is an importment parameter to reflect the degree of organic pollution, which is used to show the quantity of oxidant in measuring water samples. The experimental data in-situ including the absorption coefficient of CDOM, apparent optical properties and COD are obtained in the regions of Panjin, Liaoning Province in May 2008 and August 2009. With the measurement data, first, it has showed by correlative coefficients that the influence of COD in water on the spectral absorption coefficient is mainly represented on absorption spectral features of CDOM. Second, the exponential spectral slope was determinged. Thirdly, the model of retrieval ag(440) based on the HJ-1 satellite is created, which can be as the concentration of CDOM. Then, a remote sensing model was establish based on the exponential spectral slope and the absorption coefficient at 440 nm .Finally, the model for water COD retrieval from HJ-1 satellite was applied in the region of the Liaodong Gulf and the spatial distribution of COD was obtained. |
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| Keywords: | CDOM optical properties HJ-1/CCD COD retrieval model |
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