城市地质信息数据安全管理研究

随着国家对城市地质工作的不断重视以及力度的加强,城市地质信息系统在经历着不断的发展和更新换代,同时有关地质体状况的基础地质数据、地质环境数据（如地面沉降监测）等也在随着技术的不断发展而逐渐增长。所有的数据集群在一起,通过各种应用平台为城市规划、建设、管理服务。但是,日益庞大的数据将面临数据存储、备份、保护等问题。经过对网络运营状况,现有网络设备、软件系统、数据库规模以及未来网络发展的分析研究,本文结合自身网络特性、通过相应技术手段,为配合未来发展需求,建立了一套城市地质信息数据安全管理体系。     

特约主题:地质大数据

<正>编者按语:人类社会已进入大数据时代,大数据成果已惠及平民百姓。然而,大数据在地学领域的应用却相形见绌。大数据有3个重要的技术取向:重关联不重因果,重全体不重抽样,重效率不重精确。在科学研究中什么是大数据研究呢?符合大数据3个技术取向的是大数据研究采用全数据模式的是大数据研究;从数据出发的是大数据研究。在大数据时代,世界一切关系皆     

地理信息和网络技术一体化的地质勘探数据管理模式

传统的地质勘探数据管理模式制约着数据应用的便捷性和数据的共享范围，随着计算技术的发展，地理信息和网络技术的一体化为地质勘探数据的管理和共享提供了技术支持。以伊敏矿区电子版地质报告数据管理系统为例，应用地理信息技术的关系数据与图形数据统一管理模式，结合网络技术的数据传输与存储平台，建立了基于网络信息服务的地质勘探数据管理系统，可以充分挖掘地质勘探数据应用的深度和广度，同时便于地质勘探数据分发共享。     

大比例尺数字化测图技术的应用分析

随着现代科学技术的高速发展,各领域日新月异的变化在不断改变着传统的技术。数字化测图技术是现代科学技术和智能测绘的广泛应用,在数字地球、数字中国、数字城市等概念提出及数字化工程相继启动的影响下,测绘领域的应用在逐步实现测量数据和绘图技术的自动化、实时化、数字化。本文通过介绍数字化测绘技术在大比例尺地形测绘中的应用,为数字化测图技术的应用推广提供理论和实践经验。     

大数据时代下的GIS发展

随着网络技术迅速发展,带有地理位置信息的数据在数据容量、数据类型、数据结构等方面日益复杂。从大数据与GIS的概念出发,通过分析大数据对GIS发展的影响,从数据采集、数据管理、空间分析与可视化三个方面对大数据GIS的发展进行阐述探讨。提出通过完善水文空间数据基础设施以及在水文数据分析与挖掘方面,建立分布式并行或云计算构架等方式构建水文空间数据管理基础设施,以支撑水文数据统一管理与共享,加快GIS与大数据技术结合,实现大数据为GIS所带来的重大社会价值。     

地质调查数据容灾技术方案的研究

在公益性地质调查工作的逐步开展过程中,地质数据正以指数方式快速增长,大量优质的数据带来丰富信息的同时,数据丢失和损坏的危险性也在逐渐加大。文章从设计原则及总体规划、存储方案、容灾测试等几个方面探讨地质调查数据容灾技术方案,结合实际情况提出一些合理建议,旨在对现有的地质调查数据进行容灾管理及有效防止数据泄密和数据损失。     

建筑企业数字化转型的三个维度与两项工作

<正>随着大数据、云计算、BIM、物联网、机器人、VR等数字技术的快速发展,建筑企业数字化转型成为行业关注的热点。但是,数字化转型是不是迫在眉睫?转型究竟转什么?如何做才能转成数字化?本文针对这些疑问,结合广联达的实践经验,阐述了数字化转型的三个维度和两项工作,以供参考。     

近场数据在海洋地震采集现场质控中的应用及效果

近场数据在海洋地震勘探震源质控中发挥着重要的作用,随着技术的进步,近场数据的质控方法也日趋完善.这里在介绍近场数据的来源及基本原理基础上,根据多年海上质控经验,系统总结了近场数据在采集质控中的应用实例,包括枪子阵同步性质控,单枪测试,枪漏气,枪自激等,并对应用效果进行了对应的分析.实际应用效果表明,通过对原始的近场数据...     

起伏地形下偶极-偶极激电测深二维反演软件开发及应用

在有限元点源二维正演模拟中,采用第二类齐次边界条件结合相应的网格剖分技术,并将二维正演模拟程序引入到偶极-偶极激电测深二维反演中,编制相应反演程序并进行集成,形成集数据输入、反演计算、数据成图和结果输出为一体的二维反演软件。通过对起伏地形下的两个理论模型合成数据及一例实测数据的反演,反演结果表明反演软件有效。     

基于多源SAR数据的InSAR地表形变监测(摘要)

<正>合成孔径雷达干涉测量(InSAR)技术因其具有高分辨率、高精度等特点,已广泛用于地震、火山、地面沉降等地表形变的监测中。然而,InSAR技术仅能获取雷达视线方向的一维形变信息,仅依靠单一轨道的SAR数据不能完全、准确地反映监测区的地表形变特征,这一缺陷大大限制了InSAR技术在地表形变监测中的推广应用。随着Envisat ASAR、ALOS PALSAR、Radarsat-2、COSMO-SkyMed和TerraSAR-X等雷达卫星数据的不断获取,在同一     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

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.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

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.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

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).     

HYDROGEOLOGY

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     

METAMORPHIC PETROLOGY

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),     

SERIALS

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GEOPHYSICAL EXPLORATION

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-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

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-     

PETROLEUM GEOLOGY

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.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861