| 海底地形图表达方法探讨 |
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| 引用本文： | 吴芳华,张羿祺,王磊,马超.海底地形图表达方法探讨[J].海洋测绘,2020,40(5):58-62. |
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| 作者姓名： | 吴芳华 张羿祺 王磊 马超 |
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| 作者单位： | 地理信息工程国家重点实验室,陕西西安710054;西安测绘研究所,陕西西安710054;武汉大学资源与环境科学学院,湖北武汉430072;西安航天天绘数据技术有限公司,陕西西安710061 |
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| 基金项目： | 国家973计划(613317) |
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| 摘 要： | 为实现海底地形多样化表示与服务,丰富海底地形图表示样式,分析了海底地形图的主要内容,研究了海底地形图可视化表达机制。结合多源海底地貌与底质数据的特点,提出了基于颜色扩展联合图形符号、可灵活组合的海底地形图表示策略,给出了水深注记、等深线、深度区、海底底质这4类主要海底地形要素的具体表达方法。试验表明,设计的可视化表达方法能实现不同类型、不同来源、不同质量差异的多类型海底地形数据的有效表达,为海底地形数据的多样化表达提供参考。
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| 关 键 词： | 海底地形图 水深注记 等深线 深度区 底质 可视化表达 |
Research on the Representation Method of Submarine Topographic Map |
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| WU Fanghu,ZHANG Yiqi,WANG Lei,MA Chao.Research on the Representation Method of Submarine Topographic Map[J].Hydrographic Surveying and Charting,2020,40(5):58-62. |
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| Authors: | WU Fanghu ZHANG Yiqi WANG Lei MA Chao |
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| Abstract: | In order to realize the diversified representation and service of submarine topography and enrich the representation style of submarine topographic map,this paper analyzes the main content of the underwater topographic map,and studies the visualization expression mechanism of the underwater topographic map; combining the characteristics of multi-source submarine geomorphology and the sea bottom sediment data,the paper proposes a new representation strategy of submarine topographic map based on color extension joint graphic symbols and flexible combination,providing the specific expression methods of four main submarine topographic elements: bathymetric annotation,isobaths,depth zone and submarine sediment. The experiment shows that the visual expression method designed in this paper can effectively express the submarine terrain data with different types,different sources and different quality differences,and provides a reference for the diversified expression of submarine terrain data. |
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