数字城市地理空间框架城乡规划管理信息系统的设计与应用研究     

石婷婷  洪亮  向浩 《测绘软科学研究》2014,(1):85-90

本文研究在数字城市地理空间框架相关成果的基础上,通过共享地理信息公共平台基础地理数据,提出城乡规划一张图数据库组织结构及建设标准,在共享联合的基础上实现规划项目管理信息化、规划业务审批电子化、规划决策管理一体化的建设思路与方法,并以数字黄冈地理空间框架城乡规划管理信息系统建设为示范进行系统实践应用,替代有纯文本的办公环境,以一体化的数据管理方式为规划审批与决策提供信息化手段与支持。  相似文献   

分布式异构警用地理信息平台设计和联网实现     

王生  周大良 《测绘软科学研究》2011,(6):17-21

公安部门跨部门、跨区域的警务协作,要求实现全国范围内地理信息的分布式访问。本文描述了在建设全国警用地理信息平台时,依托公安专用网络环境中,基于各地所采用的异构基础GIS平台,设计和实现多节点分布式警用地理信息平台的策略、方法和算法,并介绍了相关的标准规范、系统安全、运维监控等平台支撑技术。  相似文献   

Palaeoenvironmental analysis of Cenomanian-Turonian dinocyst assemblages from the Castilian Platform (Northern-Central Spain)     

Daniel Peyrot  Fernando Barroso-Barcenilla  Eduardo BarrónMaría José Comas-Rengifo 《Cretaceous Research》2011,32(4):504-526

The palynological assemblages from three Cenomanian-Turonian sections from the Castilian Platform are described. The 49 levels analysed yielded a well-diversified palynological content including dinoflagellate cysts, acritarchs, prasinophytes and miospores. The comparison of the terrestrial and marine assemblages from these three sections reveals significant differences that are mainly related to their relative palaeogeographical locations. The quantitative study performed on dinocyst assemblages suggests an association interpreted as inner neritic including Xenascus ceratioides, Cribroperidinium exilicristatum, Canningia reticulata and Kallosphaeridium? ringnesiorum. On the contrary, the group inferred to show outer neritic preferences is integrated by Palaeohystrichophora infusorioides, Spiniferites spp., Odontochitina spp., Trichodinium castanea and Impletosphaeridium polytrichum. In the Castilian Platform, the Cenomanian-Turonian Boundary Event (CTBE) may be manifested by a higher proportion of Cyclonephelium spp. in the distal dinocyst assemblages.  相似文献   

塔里木盆地西部一间房露头区奥陶系台缘储层沉积体系分析   总被引：2，自引：0，他引：2  

焦养泉  荣辉  王瑞  吴立群  颜佳新  曾凡平  顾元  李荣 《岩石学报》2011,27(1):285-296

碳酸盐岩台地边缘优质储层相带预测一直是石油勘探家关注的焦点,露头沉积体系精细结构分析及其储集性能研究是总结预测模型的一把关键钥匙。在塔里木盆地西部一间房露头区,通过详细的野外地质调查、沉积体横向追踪与对比、典型沉积体系剖面写实、系统取样和室内测试分析等方法,对中奥陶统一间房组台缘生物礁-滩沉积体系、上奥陶统良里塔格组底部的台缘斜坡-斜坡扇沉积体系进行了系统的沉积体系内部成因相构成及其储集性能研究。研究认为台缘沉积体系具有复杂的内部构成,其成因相具有相对固定的空间配置格架和品质迥异的储集性能。在台缘靠近台地一侧往往发育生物礁-滩沉积体系,由生物礁、生物碎屑滩和台缘背景沉积等3种成因相组合构成。生物碎屑滩产出于生物礁周围,礁前则具有特征的砾质滩。由内侧滩向外侧滩沉积物颗粒变细、分选性变差、生屑含量和亮晶胶结物减少。而在台缘靠近盆地一侧,则往往台缘斜坡-斜坡扇沉积体系,主要由斜坡、斜坡扇、扇面水道和滑塌体等4种成因相组合构成。扇面水道通常切割斜坡扇,滑塌体周围往往伴生有小型斜坡扇体。由斜坡扇或者扇面水道的近端向远端,沉积物由砾质逐渐转变为砂质。在上述两种台缘沉积体系中,礁前内侧砂质滩和礁后内侧砂质滩、远端砂质斜坡扇具有良好的储层品质。比较而言,台缘生物礁-滩沉积体系的潜在储集性能总体上优于台缘斜坡-斜坡扇沉积体系。  相似文献   

北京西山昌平组下部角砾碳酸盐岩类型及成因     

杨舒然  廖志坚 《云南地质》2011,30(3):373-375

昌平组下部角砾状碳酸盐岩有两类成因,分别为风化残积角砾岩和重力流角砾岩,其成因机制为由台地向斜坡过渡的缓坡重力流形成。  相似文献   

The junction of the eastern Central Asian Fold Belt and the Siberian Platform: deep structure and Mesozoic tectonics and geodynamics     

B.F. Shevchenko  M.V. Goroshko  A.N. Didenko  V.A. Gur'yanov  V.S. Starosel'tsev  A.S. Sal'nikov 《Russian Geology and Geophysics》2011,52(12):1672-1679

The tectonic structure of the junction of the eastern Central Asian Fold Belt and the Siberian Platform, along with the deep structure of the Earth's crust and lithosphere in this region, has been described on the basis of new geological and geophysical data (seismic, geoelectric, and space-structural studies as well as new-generation geological maps), combined with new interpretation techniques (processing of the previous data by special software). The data suggest the existence of oblique collision during the convergence of the tectonic plates and, correspondingly, tectonic units composing these plates, when the Mongol–Okhotsk paleobasin closed. Such a scenario within the Aldan–Stanovoi Shield is evidenced by areas of syn- and postcollisional magmatism, with their deep-level and geochemical characteristics, and by the presence of a Late Mesozoic fold–thrust zone. Deep “traces” of these tectonomagmatic events, detected in the course of geological and geophysical modeling, are manifested in inclined deep boundaries between the crustal and lithospheric blocks. On the Earth's surface, they correspond to large fault systems: the Dzheltulak, North and South Tukuringra, Gulyui, and Stanovoi. It has been found that the influence of collision decreases northward with distance from the junction of the eastern Central Asian Fold Belt and the Siberian Platform (Dzheltulak and North Tukuringra transcrustal faults).  相似文献   

3维虚拟地球技术发展与应用   总被引：1，自引：0，他引：1  

龚健雅 《地理信息世界》2011,9(2):15-17

随着遥感技术、计算机技术和网络技术的发展,在应用需求牵引下,以GoogleEarth为代表的3维虚拟地球得到迅速发展和应用.对此,主要讨论了几个主要3维虚拟地球系统及特点.结合地理信息服务技术的发展趋势,介绍了自主研制的开放式虚拟地球集成共享平台GeoGlobe及其应用特点,阐述了虚拟地球技术与应用的发展趋势.  相似文献   

公安行业警用地理信息平台建设思路及进展   总被引：1，自引：0，他引：1  

贺日兴  孙丕龙 《地理信息世界》2011,9(6):7-11

从地理信息技术发展和公安行业对警用地理信息共享应用需求出发,介绍了开展全国警用地理信息平台建设背景和必要性,并重点就警用地理信息平台的概念及其体系结构组成、全国警用地理信息平台建设思路、建设进展和后续发展规划等进行了系统论述.  相似文献   

光合作用微生物席主导的寒武系苗岭统崮山组均一石:以山东省泗水县圣水峪剖面为例^*          下载免费PDF全文

梅冥相 《古地理学报》2021,23(2):335-358

作为一种缺乏沉积构造的隐晶质块状泥晶所表征的非纹层状微生物碳酸盐岩类型,均一石自从命名之后就很少被描述或自古老的地层记录之中被识别出来,再加上缺乏现代实例,造成了对这种微生物碳酸盐岩类型研究的困难。来自于山东省泗水县圣水峪剖面寒武系苗岭统崮山组中的均一石,以厚层块状、缺乏沉积构造的泥晶灰岩为主,表现为生物层状的微生物礁,与相对较深水的中厚层中至深缓坡相的条带状泥晶灰岩和泥灰岩一起,构成较为典型的潮下型碳酸盐岩米级旋回,集中发育在淹没不整合型三级沉积层序顶部的强迫型海退体系域之中,代表着相对海平面下降阶段的沉积记录。在这些主导着生物层状微生物礁灰岩的均一石中,不均匀地高密度保存着致密缠绕以及较薄的泥晶壁所成型的丝状葛万菌物质体是其最为基本的特征,表明均一石形成于光合作用微生物席复杂的钙化作用。另外,在均一石的致密泥晶组构中,局部发育毫米级至厘米级大小而且形态极端不规则的亮晶显微管状组构。基于其特别的组构特征,将这样的组构解释为具有公共鞘的丝状蓝细菌即念珠菌菌落的钙化作用残余物,其致密泥晶组构可能代表着蓝细菌公共鞘的钙化作用残余物,其中的亮晶显微管则可能为蓝细菌丝状体的钙化作用残余物,而且在这样的组构之中还发育和共生着丝状葛万菌菌落,从而延伸了对蓝细菌菌落钙化作用残余物的认识和解释,并对具这种组构的海绵木乃伊解释提供了另外一种重要的研究镜像。因此,山东省泗水县圣水峪剖面寒武系苗岭统崮山组上部生物层状微生物礁体中的均一石,不仅提供了一个较为典型的寒武纪苗岭世不借助于二氧化碳浓缩作用机制(CCM机制)的蓝细菌钙化作用的实例,而且提供了一个在丝状蓝细菌主导的微生物席之中发育着念珠菌菌落的多重状微生物席的典型实例,从而拓宽了对显生宙最高的大气圈CO₂含量以及较高的大气圈O₂含量条件下的较为典型的方解石海中与寒武纪后生动物大爆发相平行的蓝细菌繁荣和钙化作用的了解。  相似文献   

Middle Paleozoic impact event in the southwest of the East European Platform     

R.Kh. Sungatullin  A.I. Bakhtin  V.A. Tsel’movich  V.G. Bakhmutov  G.M. Sungatullina 《Russian Geology and Geophysics》2018,59(9):1149-1160

A zone with high remanent magnetization and magnetic susceptibility has been identified at the boundary between Lower Devonian gray- and red-colored deposits in the basin of the Dniester River in the southwest of Ukraine (in the southwest of the East European Platform). The microparticles of native iron and nickel and iron-nickel intermetallic compounds found here might be markers of an impact event in the Lochkovian (~ 415 Ma). Electron microscope examination and probe microanalysis of the chemical composition, morphology, structures, and textures of specific microobjects showed that they are the product of melting of meteoritic substance and target rocks caused by an impact explosion. Explosive dispersion and deposition of microparticles on the Earth’s surface result in a rapid differentiation of their substance. The obtained data can be used as evidence of a reference impact event during the fall of an iron-stone meteorite, and a characteristic set of minerals and geochemical parameters can help to identify catastrophic events in the geologic history.  相似文献