| 摘要: |
| 海冰是影响渤海冬季海运的严重灾害，研究年度周期内海冰时空变化具有重要意义。依据研究内容选择11期具有代表性的MODIS影像数据，采用ENVI软件进行预处理，利用目视解译方法提取海冰面积与空间位置信息，采用ArcGIS软件制作了海冰时空变化图、海冰结冻与融化过程变化图。最后，对海冰面积变化、海冰结冻与融化过程进行了详细分析。研究结果表明：利用MODIS影像进行年度周期内海冰变化分析技术方法是可行的。 |
| 关键词: MODIS 渤海 海冰 变化分析 |
| DOI： |
| 分类号:P731.15 |
| 基金项目:31270745 |
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| Variation analysis based on MODIS of sea ice in the Bohai Sea in 2012 |
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GuoYanyou,XIE Hong-quan and YANG Guang
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China University of Geosciences, Beijing,Huaihai Institute of Technology,School of Geodesy Geomatics Engineering,Huaihai Institute of Technology;China
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| Abstract: |
| Sea ice is one of severe hazards affecting sea transportation of Bohai in winter. It is extremely urgent that spatio-temporal annual distributions of sea ice were identified by satellite remote sensing and geographic information system. Eleven typical MODIS imageries were selected and preprocessed. Sea ice distribution area and spatial pattern were retrieved by using visual interpretation method in ENVI. The sea ice spatial distribution map, spatio-temporal distribution map, and the processing map from sea ice to melt sea water were carried out in ArcGIS. The change of sea ice area and the melting process of sea ice were discussed in detail. Research results were indicated that it is feasible to analyze annual sea ice distribution change by MODIS imageries. |
| Key words: MODIS the Bohai Sea sea ice variation analysis |