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| 渤海湾航空遥感的图象分析——渤海湾近岸叶绿素A分布图 |
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平仲良
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中国科学院海洋研究所
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| 摘要: |
| 1980年9月6日,中国科学院组织十多个部门、几十个单位在津渤地区进行第二阶段环境污染航空遥感联合试验第二航次试验,中国科学院海洋研究所参加了在渤海湾海河、蓟运河口的海上试验。这次试验,空中由双水獺512飞机装载RMK相机进行彩色红外摄影,航高3800米。航速240公里/小时,摄影比例尺1:25000,相幅面积230毫米×230亳米,飞行航线示于图1。海上由“津塘护1号”、“交津研1号”、“海调105号”、“金星”轮等4条船只进行同步观测、取样。 |
| 关键词: 叶绿素A分布 遥感图象分析 |
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| 基金项目:中国科学院海洋研究所调查研究报告第821号 |
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| ANALYSIS OF IMAGES FROM AERIAL REMOTE SENSING ON THE BOHAI BAY-THE DISTRIBUTION OF CHLOROPHYLL-A OFF THE SHORE |
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Ping Zhongliang
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| The results from the joint experiment of remote sensing on the Bohai Bay indicated that there exists a statistical quantitative relationships between the reflectance of the spectral blue region on aerial color infrared photographs and chlorophyll-a in the Bohai Bay Correlative coefficient between the reflectance at 500 nm and chlorophyll-a concentration is-0.913.
After analyzing the experimental data, regression equation can be shown. as follow : Chlorophyll-a (mg/m3)=6.33-8.47 R500.
The Haihe River water with its high chlorophyll-a content appears deep blue and the Ji-yun River water with its high suspended sediments is blue green on the color infrared photographs. So that it is easy to discriminate the two waterbodies with different water quality on the images. |
| Key words: THE DISTRIBUTION OF CHLOROPHYLL-A REMOTE SENSING |
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