| 用陆地卫星─5近红外图像观测胶州湾海况 |
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| 引用本文： | 平仲良.用陆地卫星─5近红外图像观测胶州湾海况[J].海洋与湖沼,1997,28(1):104-108. |
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| 作者姓名： | 平仲良 |
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| 作者单位： | 青岛大学环境科学系!青岛，266071 |
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| 基金项目： | 国家自然科学基金!4860273 |
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| 摘 要： | 对海洋上空卫星测得的近红外波段辐射所反映的信息进行理论分析，表明卫星近红外波段图像上反映的是海况信息。1986年11月5日陆地卫星TM6图像显示胶州湾海表温度的波状分布，TM2，TM3，TM4波段彩色合成图显示胶州湾的悬浮泥沙含量分布和泥沙运动。TM4图像显示在海洋波动和风力作用下的海况，并用实测潮汐资料、气象信息解译胶州湾海况。在胶州湾中、西部，悬浮泥沙含量较高，而TM4波段辐射值较低，图像阴暗，较高的泥沙含量并没有提高TM4波段的辐射值。胶州湾东部，悬浮泥沙含量较低，而TM4波段辐射值较高，图像明亮。TM4波段辐射值并不反映泥沙含量和海底深度，它们仅提供海洋表面粗糙度或海况信息。
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| 关 键 词： | 近红外图像 海况 胶州湾 |
| 收稿时间： | 1995/4/25 0:00:00 |
| 修稿时间： | 1995/9/15 0:00:00 |
SURVEY OF SEA STATE IN JIAOZHOU BAY USING NEAR INFRARED IMAGE OF LANDSAT-5 |
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| Ping Zhongliang.SURVEY OF SEA STATE IN JIAOZHOU BAY USING NEAR INFRARED IMAGE OF LANDSAT-5[J].Oceanologia Et Limnologia Sinica,1997,28(1):104-108. |
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| Authors: | Ping Zhongliang |
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| Institution: | Environmental Science Department, Qingdao University, Qingdao 266071 |
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| Abstract: | In theory the near infrared image obtained at satellite orbit altitude above sea represents sea state. The TM6 image is made to show the wavelike features of the an surfacr temperature in Jiaozhou Bay acted upon by the sea wave(seiche) in November 5, 1986.The color composite image of the TM2, TM3, TM4 band displays the suspended sediment distribution and ndirnent movement. The TM4 image descrides the an State in Jiaozhou Bay acted upon by the an wave and the wind.In Jiaoinou Bay.s imteral and western parts, the suspended sediment contents are higher but the radiance values in the TM4 band are lower, the image appears dark. The high sediment contents do not increace the radiance values in the TM4 band. In the de part of Jiaozhou Bay, the suspended sediment contents are lower, but the radiance values in the TM4 band are higher, the sediment appears bright. So the radiance values in the TM4 band do not repmt the sediment contents and dcyths. They give only information on the an surface roughness or an state.The cloud of smoke from the Qingdao electric power plant moving 7- 8km in NNE Direction can be am in the color composite image. It is obvious that the wind was theng, about 5- 6 grade.In Jiaozhou Bay's eastern part, the wind was in the same diedon as that of the wave movement. The wind blew on the an surface over a long distance. The an surface was rough. In the ontral and Westem part of Jiaothou Bay, the wind dedon diffed from that of the wave movefnent When the wind blew on the an surface for a shond distance, the as de was smoother.The research led to the following concinsions TM4 hage gave infonnahon on an surface roughness or an state' It is possible to study the an state usng near infrared image. |
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| Keywords: | Near infrared image Sea state Jiaozhou Bay |
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