| 河口海岸GIS时空过程可视化表达 |
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| 引用本文： | 张敏,周云轩,田波,沈芳,葛建忠.河口海岸GIS时空过程可视化表达[J].吉林大学学报(地球科学版),2015(2):584-591. |
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| 作者姓名： | 张敏 周云轩 田波 沈芳 葛建忠 |
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| 作者单位： | 华东师范大学河口海岸学国家重点实验室,上海,200062 |
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| 基金项目： | 国家“973”计划项目(2010CB951204);科技部国家重点实验室专项研究项目(2012KYYW02) |
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| 摘 要： | 河口海岸带中一些随时间变化的三维海洋现象(如涡漩、锋面、水团等)的时空建模与可视化表达是海洋地理信息系统(MGIS)发展的一大难题。基于流体建模与可视化AVIZO Green技术,针对海洋连续场中的三维海洋现象,提出了基于特征的时空三域动态识别技术,设计并实现了面向主题应用的时空四维GIS可视化框架,能够有效表达三维海洋现象。以长江口海岸带涡漩、冲淡水、羽状锋和盐跃层为例进行三维动态可视模拟,直观再现了object-like型和field-like型海洋现象的时空演绎过程,为海洋现象仿真研究,尤其是多维、动态、边界模糊的复杂海洋现象的有效表达提供了一种新思路和方法。
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| 关 键 词： | 海洋 GIS 海洋现象 三维可视化 AVIZO Green 四维 GIS 河口海岸 |
Study of Spatio-Temporal Process Visualization for Estuarine and Coastal GIS |
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| Zhang Min
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Zhou Yunxuan
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Tian Bo
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Shen Fang
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Ge Jianzhong.Study of Spatio-Temporal Process Visualization for Estuarine and Coastal GIS[J].Journal of Jilin Unviersity:Earth Science Edition,2015(2):584-591. |
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| Authors: | Zhang Min Zhou Yunxuan Tian Bo Shen Fang Ge Jianzhong |
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| Institution: | Zhang Min;Zhou Yunxuan;Tian Bo;Shen Fang;Ge Jianzhong;State Key Laboratory of Estuarine and Coastal Research,East China Normal University; |
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| Abstract: | The spatio-temporal modeling and visualization of certainthree-dimensional (3D)dynamic marine phenomena in estuarine and coastal waters,such as whirlpools,frontal,water mass,arevery challenging for the MGIS development.Based on the flow modeling and visualization technology of AVIZO Green,we present a spatio-temporal three-scale dynamic recognition technique for visualizing the 3D marine phenomena.We designed a theme-oriented four dimensional GIS (4DGIS)application framework to describe visually the 3D marine phenomena in continuous marine scenario.Whirlpools, fresh water fronts,plumes and salty pycnoclines in Yangtze Estuary are taken as examples in the visualization that demonstrates the spatio-temporal evolution of object-like and field-like marine phenomena.It provides a new approach for simulation visualization of marine phenomena,as well as expression of more sophisticated,multi-dimensional and dynamic marine phenomena. |
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| Keywords: | Marine GIS marine phenomena 3D visualization AVIZO Green 4D GIS estuarine and coastal |
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