Fractal and Multifractal Modeling of Hydrothermal Mineral Deposit Spectrum： Application to Gold Deposits in Abitibi Area, Ontario, Canada   总被引：2，自引：0，他引：2  

ChengQiuming 《中国地质大学学报(英文版)》2003,14(3):199-206

A number of fractal/multifractal methods are introduced for quantifying the mineral de-lmsit spectrum which include a number-size, grade-tonnage model, power spectrmn model,multi-fractal model and an eigeavalue spectrmn model The first two models characterize mineral deposits spec-tra based on relationships among the measures of mineral deposits.These include the number of deposits,size of deposits,concentration and volume of mineral deposits.The last three methods that deal with the spatial-temporal spectra of mineral deposit studies are all expected to be popularized in near future.A case study of hydrothermal gold deposits from the Abitibi area,a world-class mineral district is used to demonstrate the principle as well as the applications of methods proposed in this paper,It has been shown that fractal and multifractal models are generally applicable to modeling of mineral deposits and occurrences.Clusters of mineral deposits were identified by several methods including the power spectral eral deposits in the Timmins and Kirkland Lake camps.  相似文献   

Spatial Database Management System of China Geological Survey Extent   总被引：4，自引：0，他引：4  

ChenJianguo ChenZhijun WangQuanming FangYiping 《中国地质大学学报(英文版)》2003,14(3):250-256

The spatial database management system of China geological survey extent is a social service system. Its aim is to help the government and the whole social public to expediently use the spatial database, such as querying, indexing, mapping and product outputting. The management system has been developed based on MAPGIS6. x SDK and Visual C , considering the spatial database contents and structure and the requirements of users. This paper introduces the software structure, the data flow chart and some key techniques of software development.  相似文献   

Application of Weights of Evidence to Mineral Potential Mapping of Yujiacun Ore Field in Northwest Yunnan Province, China   总被引：1，自引：0，他引：1  

ZHAO　Pengda 《中国地质大学学报(英文版)》2003,14(3):269-273

The multivariate information conprehensive processing technique is especially important at present to the digital mineral prospecting. However, the GIS-based weights of evidence have provided us with powerful tool for the quantitative assessment of mineral resource potential. In this paper, the mineralization model is established, based on the achievements made by previous researchers, to mend such deficiencies ad few references on ore fields in Yujiacun, Yunnan Province and the shortage of quantitative prediction and assessment of mineral resources. In addition, the weights of evidence are used to make a systematic quantitative prediction and assessment of mineral resources there, so that 2 mineral prospecting target areas of grade Ⅰ and 8 mineral prospecting target areas of grade Ⅱ are delineated, providing the further mineral resource exploration with the basis for the selection of mineral deposits.  相似文献   

1：50000DLG生产中地名库数据的应用     

李亚东韩嘉福  陆宇红 《东北测绘》2003,26(2):57-59

根据生产实际，通过对地名库数据的分析和DLG生产对地名库数据的要求分析，在对ARCINFO软件的开发基础上，提出了快速有效实现地名库数据导入DLG中的方法。  相似文献   

利用VBA实现MicroStationV8地形图数据的转入转出     

向南平陈明辉  曾联斌 《测绘与空间地理信息》2003,26(1):31-33

介绍在MicroStatioV8环境下dgn格式地形图数据的转入转出原理及遇到的问题，在此基础上，用VBA编程具体实现了一个数据输入输出转换模块，对实现数字测图系统与MicroStation地理信息系统平台的接口有一定的借鉴作用。  相似文献   

面向数字城市空间管治的Mobile GIS集成研究     

周立 《现代测绘》2003,(Z1)

探讨了数字城市空间管治Mobile GIS集成的技术路线。通过城市空间管治动态信息采集、空间决策支持需求分析,设计实现了数字城市空间管治移动GIS系统。  相似文献   

基于自动化服务器的参数化方法实现自定义符号的绘制     

徐涛  项家丽 《现代测绘》2003,(Z1)

本文对ESRI公司的组件式地理信息系统(GIS)软件MapObjects(以下简称MO)中不同的符号绘制手段进行了介绍和比较。在此基础上,提出了一种基于自动化服务器的参数化方法来地绘制形式多样的自定义符号。并对GIS中符号绘制技术的发展前景进行了展望。  相似文献   

武汉大学空间信息与数字工程研究中心简介     

傅仲良 《武汉大学学报(信息科学版)》2003,28(1):126-126

武汉大学空间信息与数字工程研究中心 (以下简称中心 )是武汉大学直属的 ,集空间信息与数字工程教学、科研和技术开发于一体的与学院平行的独立机构 ,由遥感与地理信息系统知名专家边馥苓教授任主任 ,现任武汉大学副校长李清泉教授兼任副主任 ,我国著名的遥感信息学专家、中国科学院及中国工程院院士李德仁教授任学术委员会主任。中心主要致力于在空间信息科学、地球科学、计算机科学、人文科学及其边缘学科交叉渗透、相互交融的基础上 ,着眼于地球数据的数字化、网络化、智能化和可视化 ,开展数字城市、数字农业、数字公安、数字水利、数字…  相似文献   

地理信息系统在国内外应用现状   总被引：7，自引：0，他引：7  

曹瑜  胡光道 《中国测绘》2003,(2):32-33

GIS为人类由客观世界到信息世界的认识以及由信息世界返回客观世界的利用改造，创造了空前良好的条件和环境。  相似文献   

奋进中的朝阳产业——访北京四维图新导航信息技术有限公司     

喻贵银 《中国测绘》2003,(3):18-19

电子地图在信息浪潮的冲击下应运而生,正在为人类架构美妙的“精神乐园”。随着电脑和网络的普及，文化的传播交流变得如电光火石般迅捷，文化资源的获取共享在瞬间即可实现。电子地图正如春风细雨般向我国国民经济的方方面面渗透，日益发挥出其在科学管理和社会生活等方面所特有的强劲的辅助功能。电子地图的冲击波正酝酿着一场划时代的地图的“革命”。  相似文献