基于GEBCO的海底热液区地形复杂度分析方法研究  

Research of Terrain Complexity Analysis Method on Hydrothermal Fields Based on GEBCO

作　　者：赖志坤[1] 陈坚[1] 

机构地区：[1]国家海洋局第三海洋研究所,福建厦门361005

出　　处：《海洋测绘》2014年第4期58-61,共4页Hydrographic Surveying and Charting

基　　金：中央海洋公益性行业科研专项(201005003)

摘　　要：海底热液区地形复杂度是热液活动场的重要指标数据,获取地形复杂度指标数据,为系统研究全球海底热液区分布特征具有重要意义。阐述了地形复杂度和GEBCO数据的基本应用情况,介绍了基于数字地形模型数据进行地形复杂度计算的基本方法,提出了海底热液区地形复杂度计算的窗口序列分析法和基本步骤,实例分析了伊豆—小笠原海底热液活动亚带的地形复杂度情况。Three kinds of the unmanned aerial vehicle （UAV） photogrammetric systems are introduced, as well as the captured images based on these three kinds of UAV photogrammetric systems in some areas of islands and reefs. The factors that affecting the accuracy of UAV image data processing and the characteristics of UAV photogrammetric systems used in island areas are analyzed. Lastly, we processes the image data through image quality analysis, aerial triangulation and making digital orthophoto map. The experiment shows the UAV photogrammetric systems has a great application perspective in the field of terrestrial photogrammetry and chart updates in island areas.

关 键 词：全球海底地形数据 数字高程模型 海底热液区 地形复杂度 伊豆—小笠原 

分 类 号：P208[天文地球—地图制图学与地理信息工程]