基于卫星影像建立曲流河地质知识库及应用

曲流河储层在国内各大油田中占有较大比例,建立曲流河地质知识库,对储层进行精细研究十分重要。采用GoogleEarth软件观测曲流河特征,建立6种发育模式;测量曲流河河道参数数据,分析统计参数间的相关关系。通过观测,将曲流河发育模式划分为单一河道低弯曲度小边滩发育型、单一河道高弯曲度大边滩发育型、简单河道低弯曲度小边滩发育型、 简单河道高弯曲度大边滩发育型、多河道低弯曲度小边滩发育型、多河道高弯曲度大边滩发育型6种类型。对曲流河参数数据进行统计分析,发现曲流河河道宽度与点坝长度、河道宽度与单一曲流带宽度 、点坝长度与点坝宽度间均具有较好的正相关关系。按曲率为1.1~1.5、1.5~2.5、2.5~4.5统计分析,参数间的正相关性高于所有数据参数分析结果。为此,建立了曲流河的定性模式和不同曲率下 曲流河的定量模式。研究结果可为地下曲流河储层研究提供相应模式和定量化指导。     

GoogleSketchUp三维可视化技术

本文阐述了如何进行三维校园的可视化,解决了GoogleSketchUp的二维图形的获取及其空间定位、三维模型的拉伸及其纹理材质库的建立等一系列技术问题.并以某校园为例详细介绍了三维可视化的制作过程,解决了现实操作中存在的一些主要问题,如纹理贴图不逼真、建筑物楼层没有显示、地形起伏不易表达、地物属性没法添加等,为今后继续...     

Spatial and environmental patterns of off-road vehicle recreation in a semi-arid woodland

Outdoor recreation is a widely recognized cultural ecosystem service. Ensuring that appropriate, high quality recreation opportunities are available requires, among other factors, knowledge of the environmental preferences of recreation users and spatial indicators of where those environmental features exist on the landscape and offer the potential to meet recreation goals. Diverse types of outdoor recreation exist, and different forms of recreation may be associated with different environmental features. The focus of this study is off-road vehicle (ORV) recreation. We demonstrate how readily available spatial environmental datasets, including high resolution image data provided within GoogleEarth, can be used to develop a cost-effective, objective indicator of ORV recreation across a landscape, which can inform management to provide desired recreation opportunities while protecting ecologically sensitive areas.ORV recreational tracks were delineated from GoogleEarth imagery throughout our study area in the Great Western Woodlands of Western Australia. In this region, ORV use is a popular recreation activity and a growing concern of conservation organizations, but is not yet actively managed. Most recreational ORV tracks in the study area are informal and user-created. Mapped ORV recreation tracks were used to model and map the environmental associations of ORV recreation. The pattern of existing tracks indicated associations between recreation and noteworthy environmental amenities in the study area such as the shores of salt lakes and rock outcrops with high ecological and cultural value. However, one of the most important determinants of ORV track presence was accessibility, especially proximity to a road. Access infrastructure, such as proximity to roads, is often used to proxy demand and use in expert-based spatial assessments of ecosystem services. The results of our empirical model underscore the importance of incorporating patterns of both supply (i.e., desired natural amenities) and demand (i.e., access) into ecosystem service assessments. In addition, when integrated with maps of environmental sensitivity and more detailed information about human use, the predictive map of areas providing potential recreation experiences can be used for comprehensive spatial planning of sustainable ORV recreation. One possibility suggested by our results is that careful planning and management of access routes may be an effective means to achieve sustainable ORV recreation.     

基于随机游走过程的多点地质统计学建模方法

在分析国内外建模方法现状及其特点的基础上,提出了一种用于河流相储层模拟的新方法,即基于随机游走过程的多点地质统计学方法(RMPS).首先提出了7个方向迁移概率计算及4个方向河道源头搜索的随机游走过程的改进,实现了高曲率回旋河道和网状河等模拟以及各种类型河流相的主流线预测.其次在预测河道主流线的基础上,利用它对多点地质统...     

基于GoogleEarth的海洋物理场数据可视化研究

GoogleEarth是一款强大的三维地图软件。首先介绍了GoogleEarth的发展现状及基本原理，随后在GoogleEarth的环境下，引入了海底地形图，并对海底地形和重力异常值进行了标注，为实现海洋物理场数据的科学管理和可视化提供了有效的方法，最后论述了GoogleEarth在海洋测绘和海洋水文学中的应用前景。     

Google Earth在防震减灾决策中的应用

在Google Earth平台基础上,通过基于XML的KML进行文件传递,实现本地专题平面数据加载,用KMZ格式实现三维数据的加载,然后利用Google Earth在防震减灾工作中实现本地数据应用扩展.为更好利用Google Earth平台和数据,采用PostGIS空间数据库和Geoserver地图服务器的一个体系,来实现对网络数据服务的扩展,并且对网络数据服务应用的架构及运行流程进行了描述,使之成为防震减灾决策的数据支撑.     

Google Earth 影像在地理国情普查中的补充使用

介绍了利用Google Earth数据作为地理国情普查数据的补充资料的3种方法,总结Goole Earth数据以及Global Mapper软件在地理国情普查工作的应用的一些经验和体会。