沙漠化评价基本理论初探

沙漠化评价的原则、内容和方法紧密联系。沙漠化研究内容决定其评价内容。沙漠化地图的合适信息负载量，决定各种比例尺的沙漠化评价指征的详细程度，也决定沙漠化分级数与分类数。分级数的下限是沙漠化允许值。     

蕴震系统自组织演化与构造微动态研究

蕴震系统是在多种环境动力因子作用下，由多个不同性质、不同层次的子系统强烈相互作用所形成的“复杂巨系统”或“复杂的非线性动力学系统”。本文概述了蕴震系统的自组织演化理论，提出并采用蕴震系统方向信息合成法研究了相应的构造微动态特征。     

建设数字地震 促进防震减灾

本文提出了“数字地震”的概念 ,讨论它的主要内容和问题 ,并对建设“数字地震”提出若干建设性意见。     

Spatial Analysis Techniques as Successful Mineral-Potential Mapping Tools for Orogenic Gold Deposits in the Northern Fennoscandian Shield,Finland

Geoscientific Information Systems (GIS) provide tools to quantitatively analyze and integrate spatially referenced information from geological, geophysical, and geochemical surveys for decision-making processes. Excellent coverage of well-documented, precise and good quality data enables testing of variable exploration models in an efficient and cost effective way with GIS tools. Digital geoscientific data from the Geological Survey of Finland (GTK) are being used widely as spatial evidence in exploration targeting, that is ranking areas based on their exploration importance. In the last few years, spatial analysis techniques including weights-of-evidence, logistic regression, and fuzzy logic, have been increasingly used in GTK’s mineral exploration and geological mapping projects. Special emphasis has been put into the exploration for gold because of the excellent data coverage within the prospective volcanic belts and because of the increased activity in gold exploration in Finland during recent years. In this paper, we describe some successful case histories of using the weights-of-evidence method for the Au-potential mapping. These projects have shown that, by using spatial modeling techniques, exploration targets can be generated by quantitatively analyzing extensive amounts of data from various sources and to rank these target areas based on their exploration potential.     

建立工程勘察资料信息系统的设计思想

随着计算机技术的发展和应用的普及，人们对信息的处理和信息的利用提出了更高的要求。信息系统能及时地输出和传递所需的信息。本文简要地探讨了工程勘察资料信息系统的开发思路。     

基于Powerbuilder+SQL Server的天津市机井管理信息系统的开发及其分布式应用

以SQL Server为后台数据库管理机井数据，并把机井数据库作为主要研究对象，以Powerbuilder为前台开发工具，利用其提供的优良性能与丰富界面。开发了机井管理信息系统，可对机井信息进行科学管理与分布式应用。     

宾川幔坳区斑岩铜矿综合信息三维找矿模型

云南宾川幔坳区位于青藏高原横断山脉东缘，金沙江有色贵金属矿带南段，是云南仅次于东川-昭通，个旧-丘北的第三大幔坳区，本文首次概括综合信息三维找矿模型显示，该区可能赋存一个超大型斑岩系列铜矿床，区内纳米碳，铜，金相互作用是其主要成矿作用之一。     

Application of GIS Processing Techniques for Producing Mineral Prospectivity Maps—A Case Study: Mesothermal Au in the Swayze Greenstone Belt,Ontario, Canada

A Geographic Information System (GIS) is used to prepare and process digital geoscience data in a variety of ways for producing gold prospectivity maps of the Swayze greenstone belt, Ontario, Canada. Data used to produce these maps include geologic, geochemical, geophysical, and remotely sensed (Landsat). A number of modeling methods are used and are grouped into data-driven (weights of evidence, logistic regression) and knowledge-driven (index and Boolean overlay) methods. The weights of evidence (WofE) technique compares the spatial association of known gold prospects with various indicators (evidence maps) of gold mineralization, to derive a set of weights used to produce the final gold prospectivity map. Logistic regression derives statistical information from evidence maps over each known gold prospect and the coefficients derived from regression analysis are used to weight each evidence map. The gold prospectivity map produced from the index overlay process uses a weighting scheme that is derived from input by the geologist, whereas the Boolean method uses equally weighted binary evidence maps.The resultant gold prospectivity maps are somewhat different in this study as the data comprising the evidence maps were processed purposely differently for each modeling method. Several areas of high gold potential, some of which are coincident with known gold prospects, are evident on the gold prospectivity maps produced using all modeling methods. The majority of these occur in mafic rocks within high strain zones, which is typical of many Archean greenstone belts.     

卫星遥感影像中耕地信息的自动提取方法研究

以县（市区）为基本单位，采用遥感图像处理ENVI3.2软件和TM资料，进行了7个县（市区）10个时相的耕地信息自动提取技术研究，结果证明，选择春季时相，TM432波段合成，经几何校正和增强处理，通过交互的非监督分类提取耕地信息，可以获得满意的结果，平均分类精度达到98.22%。     

多源信息的集成与融合及其在遥感制图中的优化利用

多源信息的集成和融合是地球信息科学领域的一大热点问题。它的意义和必要性与地球信息本身的特征、采集信息的手段特征及信息处理平台或系统的特点三方面紧密相联系。本文从不同传感器信息的集成和融合、遥感信息与非遥感地学信息的集成和融合、不同格式的 GIS数据的集成和复合三个方面研究了多源信息集成和融合的方法、前沿技术和应用领域,进而以黄土高原土壤侵蚀遥感调查和制图任务为例,介绍了多源信息集成和融合技术在该项目中的优化应用实例,包括技术流程分析、信息源分析、多源信息在土壤侵蚀遥感调查和制图中的融合方法、从遥感图像解译信息到 GIS数据库的转换技术等。