OpenGL在三维地质模型可视化中的应用   总被引：9，自引：0，他引：9  

曹代勇  李青元 《中国煤田地质》2000,12(4):20-23

本文介绍了作者在将ＯｐｅｎＧＬ应用于三维地质模型可视化中的经验与体会。首先介绍了用ＯｐｅｎＧＬ显示三维地质模型的几个技术关键。包括模型绘制、投影变换、取景、ＴＩＮ表面显示、旋转、颜色与材料等。然后介绍了笔者基于ＯｐｅｎＧＬ的剪变换和缓冲区累加功能提出了的”切片合成法”的原理、用途、应用注意事项和应用于煤田地质勘探中煤层底版等高线图制做的实例。  相似文献   

Crust and Upper Structure of Qinghai-Tibet Plateau and Its Adjacent Regions From Surface Waveform Inversion     

Cao Xiaolin  Cao Jamin  Zhu JieshouWT  ”BX 《地学前缘》2000,(Z1)

CRUST AND UPPER STRUCTURE OF QINGHAI-TIBET PLATEAU AND ITS ADJACENT REGIONS FROM SURFACE WAVEFORM INVERSION  相似文献   

双河油田核三段Ⅱ油层组内夹层分布规律   总被引：7，自引：0，他引：7       下载免费PDF全文

张尚锋  张昌民  伊海生  郑荣才  樊中海  姜建伟  鲁国甫 《沉积与特提斯地质》2000,20(4):71-78

油层内的夹层是影响油田注水效果的因素之一,也是影响剩余油研究分布的主要因素。笔者以钻井岩心、测井等资料为基础,研究夹层的类型,成因及发育分布特征,指出各种类型的夹层与基准面变化过程中Ａ／Ｓ比值变化和沉积物补给通量变化关系密切,不同级次的基准面旋回和不同沉积微相内夹层的层次类型及发育分布规律不同。文中深入分析了夹层类型与基准面旋回的关系。  相似文献   

风化淋滤带地质新理论-CaCO3淀积深度理论   总被引：12，自引：1，他引：11  

赵景波 《沉积学报》2000,18(1)

根据黄土高原第四纪古土壤和风化带的广泛调查 ,发现了CaCO3 等化学成分的不连续淀积、厚层及多层淀积等特殊地质现象 ,结合CaCO3 含量分析与入渗实验资料 ,建立了风化淋滤带CaCO3 淀积深度新理论。该理论表明 ,CaCO3 迁移到淀积深度所需时间很短 ,可以忽略时间因素对它的影响 ,能够作为研究风化淋滤带的许多地质问题的较可靠依据。当CaCO3 淀积深度小于古土壤发育带厚度时 ,可确定土壤已向风化壳转变 ;当Ca CO3 淀积深度大于古土壤层厚度时 ,可确定土壤为淋溶型、中酸性土壤 ;当同一风化剖面中或同一层古土壤下部出现两层、三层或厚度异常大的CaCO3 淀积层时 ,指示当时出现了两个或两个以上成壤期和相应的气候变化  相似文献   

油井产液量与井底压力关系的研究   总被引：1，自引：0，他引：1       下载免费PDF全文

刘元生  胡久波  张昭栋  崔桂梅  张德元 《地震工程学报》2000,22(3):338-342

利用流体动力学理论,研究了油井产量与井口压力、井底压力之间的产量关系,给出了井口压力和油井产液量之间的等效互换关系,进一步研究了油井动态观测资料的科学处理方法,以胜利油田东水－３井为例,对其观测资料进行了处理,并讨论了泄流管管径对流量及等效水位的影响。  相似文献   

Artificial neural network inversion of magnetotelluric data in terms of three-dimensional earth macroparameters   总被引：7，自引：0，他引：7  

Vjacheslav Spichak  & Irina Popova 《Geophysical Journal International》2000,142(1):15-26

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Seismic response of three-dimensional topographies using a time-domain boundary element method     

François Janod  & Olivier Coutant 《Geophysical Journal International》2000,142(2):603-614

  相似文献   

The hyperluminous infrared quasar 3C 318 and its implications for interpreting submm detections of high-redshift radio galaxies     

Chris J. Willott  Steve Rawlings  Matt J. Jarvis 《Monthly notices of the Royal Astronomical Society》2000,313(2):237-246

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3D urban models: Recent developments in the digital modelling of urban environments in three-dimensions     

Narushige Shiode 《GeoJournal》2000,52(3):263-269

This paper reports on recent developments in the visualisation of urban landscapes. There is a growing interest in the contstruction of 3D models of urban and built environment for which a host of digital mapping and rendering techniques are being developed. This paper extracts some of the cases that we came across during worldwide interviews carried out in March 2000. Building on this review, we identify the range of data and techniques adopted for the development of 3D contents and how they could contribute to geographical analysis and planning of urban environment. A particular focus is given on the effectiveness of GIS and its related methods for their capacity to accommodate the demands for visual representation of urban environment as well as the basis for analysis and simulation. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

The Salamón gold deposit (León, Spain)     

J. L. Crespo  M. C. Moro  O. Fadn  R. Cabrera  A. Fernndez 《Journal of Geochemical Exploration》2000,71(2)

Located 55 km NE of the provincial capital León, Salamón deposit, discovered in 1985, is located on the southern slope of the Cantabrian Mountains, in the north of the Iberian Peninsula. The deposit is located on the León fault, which is a late-Variscan, E–W trending, deep structure extending for more than 100 km. The León fault has a complex history, and many mines and occurrences are located near it. The deposit is also close to small stocks and dykes of igneous rocks with intermediate to basic composition to which the mineralisation is related. The mineralisation is hosted mainly by the limestones and bituminous shales of the Lena Group (Namurian–Westphalian). There is also some mineralisation in other stratigraphic units of the Upper Carboniferous, such as the Maraña Group or the Stephanian B sediments.Apart from local and regional exploration, a detailed mineralogical and metallogenic research has been carried out. The epithermal mineralisation of Salamón was developed in two phases: an early dominant and extensive stage, with very fine crystalline gold-bearing sulphides, mainly pyrite, arsenic-bearing pyrite and arsenopyrite, in a matrix of quartz–chalcedony (jasperoid) and dolomite, and a later stage, of a larger crystal size, which occurs replacing the early stage or in pockets and veins, with greater mineralogical variety. Last of all there is a stage of supergene mineralisation, a product of the oxidant action of meteoric waters over the previous minerals. The hydrothermal alterations of the host rocks related to the orebodies are fundamentally decarbonatisation–dolomitisation, silicification and argillitisation. The early stages of mineralisation were produced in a temperature of 148–241°C, while that in the later stages occurred at 86–123°C. The early stage has been dated as 269±5 Ma, and this agrees with the ages of the other deposits of the district, which lay between 292 and 263 Ma, and the igneous rocks of the Peña Prieta stock (277±1 Ma), all which are of Permian age.The results of the studies carried out until now lead to the conclusion that Salamón is a Carlin-type gold deposit.  相似文献