监控信息可视化技术在天津地震前兆台网的应用研究   总被引：1，自引：0，他引：1  

姚会琴  赵颖  周利霞  李悦  王宝锁  徐诚 《震灾防御技术》2014,9(3):550-555

天津地震前兆台网为天津地震监测预报提供各类数据信息,目前台网运行仪器62套,包括地形变、电磁、地下流体等.随着专业仪器逐渐实现网络化工作,对于这些仪器运行质量的监控成为管理人员的重要任务,在实现了仪器设备的网络监控后,笔者对监控信息可视化展示进行了研究,主要阐述了研究思路、设计方法以及存在的问题与不足.  相似文献   

Quasi-adiabatic shear zones in the lithosphere: numerical and experimental approaches     

K. Regenauer-Lieb  J. P. Petit  D. Yuen 《Visual Geosciences》1999,4(2):1-14

Continental breakup, or compressive lithosphere scale faulting, requires a physical mechanism for wholesale faulting of the lithosphere. We compared numerical and experimental models for the nucleation of quasi-adiabatic shear bands in polyvinylchloride (PVC) with those in an idealized viscoelastoplastic mantle with olivine rheology. In both materials fault nucleation is caused by elastic stress concentration on pre-existing imperfections, with localized yielding confined to its vicinity. Faulting occurs rapidly after the initial elastic energy in the system is charged sufficiently to cause wholesale yielding. Propagation of the fault, monitored by looking at the dissipation of plastic energy, reveals migration of a sharp, thermal-mechanical “crack”- like instability, which appears in the temperature field as a slightly diffused signal. The initial temperature rise in the crack is subtle but increases suddenly when the plate is severed. This autocatalytic behavior has also been described in ductile polymers, which can be used as mechanical analogues. We suggest that elastoplastic coupling in quasi-adiabatic shear banding is a key for fast (< 1 Ma) nucleation of shear zones. These nonlinear phenomena will be illustrated for both experimental and numerical results by nine movies  相似文献   

基于MapInfo的福建省经济数据可视化研究   总被引：3，自引：0，他引：3  

谢跟踪陈文惠  郑达贤 《地球信息科学学报》2003,5(2):51-55

通过信息可视化平台的多维显示数据,揭示数据之间的关联以及隐藏在数据后面的信息,使数据为人们提供更多、更有价值的信息,正是信息分析处理的发展趋势。本文结合可视化开发中集成地图的原理、方法和对象模型,对经济数据特点及其可视化系统开发的关键技术、功能进行了分析。  相似文献   

现代测量数据的类型和组织形式研究   总被引：2，自引：2，他引：0  

花向红 《测绘工程》1999,8(4):18-21

针对现代测量数据特点,集中讨论了现代测量数据的类型以及采用不同的数据进行组织等技术问题,以便于图形,图像的生成,从而实现现代测量数据可视化。  相似文献   

地学可视化探讨   总被引：62，自引：1，他引：61  

龚建华  林珲  肖乐斌  谢传节 《遥感学报》1999,3(3):236-244

提出了关于地学可视化的研究框架。地学可视化包括地图可视化、地理信息系统（ Ｇ Ｉ Ｓ） 可视化及其在专业应用领域的可视化。地图可视化与 Ｇ Ｉ Ｓ可视化是地学可视化理论和技术的２ 个基础部分。地学多维图解是从非可视化角度提出的,关于图的地学知识表达、获取及其图的地学问题解的求证原理和方法,是地学可视化的高一级发展阶段。地图可视化中的信息表达交流模型和地理视觉认知决策模型的研究,将从理论上促进地学多维图解模型的进一步发展。基于虚拟现实技术和计算机网络技术的虚拟地理环境是地学可视化、地学多维图解理论和技术发展的最后集成系统。  相似文献   

浅谈全站仪数字测图设站错误的可视化处理     

彭维吉  彭奇娟  朱明建 《北京测绘》2010,(4):68-71

测绘生产和教学中,时常出现测站、定向点坐标设置与实际位置不一致,出现地形图测绘错误。通过错误分析,应用平面坐标变换原理,基于AutoCAD图形平台进行直观、可视化的计算机处理,给出EXCEL处理代码和lisp程序,进行错误的批量处理。该方法将在应急工程控制测量后置的地形图测绘工作中得到广泛应用。  相似文献   

运维数据可视化展示平台的设计与实现     

张小琼  梁苑苑  邓力涌  王丽玫 《气象研究与应用》2019,40(1):84-87

运维数据可视化展示是基于HTML5技术和可视化技术,通过对运行监控、资源状况、气象数据全流程等多维数据实时展示,形成可视化展示大屏,实现多源异构数据整合和实时呈现运维数据,增强基础资源利用效率,为决策分析提供不同维度的运维数据关系。  相似文献   

Spatio-temporal evaluation matrices for geospatial data     

Joc Triglav  Dušan Petrovič  Bojan Stopar 《International Journal of Applied Earth Observation and Geoinformation》2011

The global geospatial community is investing substantial effort in providing tools for geospatial data-quality information analysis and systematizing the criteria for geospatial data quality. The importance of these activities is increasing, especially in the last decade, which has witnessed an enormous expansion of geospatial data use in general and especially among mass users. Although geospatial data producers are striving to define and present data-quality standards to users and users increasingly need to assess the fitness for use of the data, the success of these activities is still far from what is expected or required. As a consequence, neglect or misunderstanding of data quality among users results in misuse or risks. This paper presents an aid in spatio-temporal quality evaluation through the use of spatio-temporal evaluation matrices (STEM) and the index of spatio-temporal anticipations (INSTANT) matrices. With the help of these two simple tools, geospatial data producers can systematically categorize and visualize the granularity of their spatio-temporal data, and users can present their requirements in the same way using business intelligence principles and a Web 2.0 approach. The basic principles and some examples are presented in the paper, and potential further applied research activities are briefly described.  相似文献   

Surfer软件在卤水储量计算及可视化中的应用简介   总被引：1，自引：0，他引：1       下载免费PDF全文

黄河远  薛传东  刘琴 《盐湖研究》2013,21(1):62-66

作为一种宝贵的液态矿产,卤水的用途广泛。卤水具有流动性、不可再生性及贮存空间是孔隙介质而非整个地层空间的特殊性,其资源量应按液态卤水资源和固态矿物资源两部分计算。介绍了基于Surfer的网格法储量计算方法,卤水资源储量计算模型及其三维可视化模型的建立,为卤水资源储量计算提供了一种更为直观、快捷的方法。  相似文献   

An integrated TIN and Grid method for constructing multi‐resolution digital terrain models     

B. Yang  W. Shi  Q. Li 《International journal of geographical information science》2013,27(10):1019-1038

Multi‐resolution terrain models are an efficient approach to improve the speed of three‐dimensional (3D) visualizations, especially for terrain visualization in Geographical Information Systems (GIS). As a further development to existing algorithms and models, a new model is proposed for the construction of multi‐resolution terrain models in a 3D GIS. The new model represents multi‐resolution terrains using two major methods for terrain representation: Triangulated Irregular Network (TIN) and regular grid (Grid). In this paper, first, the concepts and formal definitions of the new model are presented. Second, the methodology for constructing multi‐resolution terrain models based on the new model is proposed. Third, the error of multi‐resolution terrain models is analysed, and a set of rules is proposed to retain the important features (e.g. boundaries of man‐made objects) within the multi‐resolution terrain models. Finally, several experiments are undertaken to test the performance of the new model. The experimental results demonstrate that the new model can be applied to construct multi‐resolution terrain models with good performance in terms of time cost and maintenance of the important features. Furthermore, a comparison with previous algorithms/models shows that the speed of rendering for 3D walking/flying through has been greatly improved by applying the new model.  相似文献