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设计了一个通用的网络管理分析系统．该系统是大型ＧＩＳ平台ＭＡＰＧＩＳ的一个子系统,可用来管理各个应用领域的大型网状设施,提供灵活便利的数据输入和查询手段、较好的网络分析功能和一定的三维数据处理能力,便于进行二次开发．介绍了系统的模块结构、数据组织方式、实现技术及应用前景． 相似文献
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简要讨论了地理信息系统（ＧＩＳ）的研究情况,重点阐述了ＧＩＳ制图技术、可视化技术、空间分析技术、遥感制图技术在地质学领域中的应用,总结了世界各国地学中ＧＩＳ的应用情况． 相似文献
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分析了几种网络计算模式的特点,针对客户机／服务器模式设计了一个地理信息系统（ＧＩＳ）访问数据库的结构框架———客户端分为ＧＩＳ功能层和数据库请求层两层,服务器存放数据,并将此结构与ＥＳＲＩ公司的空间数据库引擎（ＳＤＥ）作了对比;通过比较几种数据库访问的程序实现方式,认为ＯＤＢＣＡＰＩ在开放性方面是良好的．最后给出的ＭＡＰＧＩＳ实例表明：采用上述设计思路的应用系统不但利用了原有ＭＡＰＧＩＳ的研究成果,实现了ＧＩＳ访问网络数据库的功能,而且还具有良好的开放性． 相似文献
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三维地理信息系统（3D—GIS）的发展现状及趋势 总被引：15，自引：0，他引：15
地理信息系统技术已经被大量应用于资源管理,环境监测,城市规划,土地管理及交通,水利,林业等领域,但ＧＩＳ技术的发展还远没有止境。人们已经不满足于传统的二维ＧＩＳ软件平台,取而代之的是空间的,立体的三维ＧＩＳ。但由于３Ｄ－ＧＩＳ包括了第三个坐标以及从平面到立体的换算,所以增加了大量的存储量和额外的数据量,因而时至今日,真正的３Ｄ－ＧＩＳ软件还很少。本文一方面介绍了３Ｄ－ＧＩＳ的概念,特点以及发展现状 相似文献
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多源图象处理与分析系统（ＭＳＩＭＡＧＥＳ）是地理信息系统（ＭＡＰＧＩＳ）的一个子系统．阐述了多源图象处理与分析系统的设计思想、原则、结构的选择,介绍了系统功能的分类和系统平台的选择,分析了图象系统所涉及的文件类型及其功用． 相似文献
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苏锡常地区GIS与地下水开采及地面沉降模型系统集成分析 总被引：14，自引：0，他引：14
本文以ＧＩＳ为主控模块,选择美国国防部开发的地下水运动模拟模型系统和美国Ｄ．Ｃ．ＨＨｅｌｍ、Ｓ．Ａ、Ｌｅａｋ等入开发的地面沉降模拟模型系统,进行苏锡常地区ＧＩＳ与地下水运动必地面沉降模拟模型系统集成分析和设计。 相似文献
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本文介绍ＧＩＳ在兵工建设中的地下管网系统的应用和设想，为将来构成兵总规模的ＧＩＳ和现代化管理打下了基础。 相似文献
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１：２０万数字地质图空间数据库的建立为应用ＧＩＳ技术对多源地学信息进行综合分析和解释奠定了基础。本文论述了应用ＡＲＣ／ＩＮＦＯ和ＭＡＰＧＩＳ等ＧＩＳ系统,各取所长地建立数字地质图空间数据的方法,总结了建库工作中的经验和应注意的一些问题,探讨了ＭＡＰＧＩＳ与ＡＲＣ／ＩＮＦＯ之间数据转换的方法,提出了本数据库在资料评价工作中的应用前景。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ1 roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003). 相似文献
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正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level 相似文献
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正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7), 相似文献
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正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci- 相似文献
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正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli- 相似文献
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正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.) 相似文献