共查询到20条相似文献，搜索用时 491 毫秒
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中国地质调查局研发的区域地质调查计算机填图系统(RGMAP)(以下简称数字填图系统)于2006年在全国范围内新开展的区调项目中全面推广应用.此系统与传统填图方法相比有着不可比拟的优势,但仍存在一些问题.文章针对数字填图系统在实际应用过程中存在的一些问题,提出相应的解决方法及建议. 相似文献
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经中国地质调查局批准，作为示范试点，河南省地质调查院在今年新开的《1：25万枣阳市幅、信阳市幅区域地质调查》项目中首次采用数字填图技术。数字填图技术是集GIS、GPS、RS和计算机技术为一体的现代地质工作重要方法和技术手段。其核心是对多源地学空间信息的数据采集、存储、检索、分析、表达等实现全流程数字化。该项新技术的应用，标志着我国地质调查工作进入了一个崭新的阶段，开始了传统地质工作的数字化革命。 相似文献
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一、系统产生背景摄影测量引人我国以来，国内在数字摄影测量领域的理论研究取得了很大的进步。在王之卓先生于1978年提出的“全数字自动化测图系统概念”指导下，我国数字摄影测量正以世人难以想象的速度发展，数字摄影测量工作站在中国的摄影测量生产中获得了普遍的应用与推广。在此形式下，国家测绘局提出了数字化测绘技术的发展目标，即实施4D产品战略，4D指DLG（数字线划图）、DOM（数字正射影像图）、DEM（数字高程模型）、DRG（数字栅格地图）。 相似文献
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本文阐述了遥感、物探、地质等多地学数据的综合应用技术和方法。作者从多源遥感数据在铀资源勘查中的应用特点出发,充分利用了铀矿地质的特色信息--航空放射性伽玛能谱(航放)信息,进行了信息融合,开发多光谱遥感、雷达遥感、高光谱遥感、航放四种信息融合的MR、MSR、HSR融合图像。在此基础上,将融合图像的解译成果与重力、磁力、地化、地质等其他地学信息进行复合分析,从而建立了具核工业特色的光-能谱集成技术系统。利用该系统在植被覆盖的花岗岩、火山岩和沉积盆地地区进行了地质填图和铀矿找矿应用,取得了很好的应用效果。 相似文献
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随着社会不断发展,网络数字测图系统得到进一步的改进和完善,在GPS与PDA技术基础上,该系统已经逐渐向数据采集方面工作。随着地理信息技术不断发展,数字测图系统会完全实现GIS数据采集,提升工作效率。本文基于GPS与PDA技术使用下,对网络数字测图系统进行了研究。 相似文献
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地学信息图谱的研究及其模型应用探讨 总被引：8，自引：2，他引：6
地学信息图谱系以遥感与地理信息系统等新技术 ,充分发挥人脑的形象思维能力来解决资源环境问题。它是地学思维在新时代下的新发展 ,在地学研究中有重要的理论和实践意义。文章着重分析了地学信息图谱研究近况 ,并结合生态系统综合评估 ,论述了地学信息图谱在该领域的应用。 相似文献
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The ability of cell to modulate the fluidity of plasma membrane was crucial to the survival of microorganism at low temperature. Plasma membrane proteins, fatty acids and carotenoids profiles of Antarctic psychrophilc yeast Rhodotorula sp. NJ298 were investigated at -3 ℃, 0 ℃ and 8 ℃. The results showed that plasma membrane protein content was greater at -3 ℃ than that at 8 ℃, and a unique membrane polypeptide composition with an apparent molecular mass of 94.7 kDa was newly synthesized with SDS-PAGE analysis; GC analysis showed that the main changes of fatty acids were the percentage of unsaturated fatty acids (C18∶ 1 and C18∶ 2) and shorter chain saturated fatty acid (C10∶ 0) increased along with the decrease of the culture temperature from 8 ℃ to -3 ℃; HPLC analysis indicated that astaxanthin was the major functional carotenoids of the plasma membrane, percentage of which increased from 54.6±1.5% at 8 ℃ to 81.9±2.1% at -3 ℃. However the fluidity of plasma membrane which was determined by measuring fluorescence anisotropy was similar at -3 ℃, 0 ℃ and 8 ℃. Hence these changes in plasma membrane's characteristics were involved in the cellular cold-adaptation by which NJ298 could maintain normal plasma membrane fluidity at near-freezing temperature. 相似文献
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《极地研究(英文版)》2014,(4)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprehensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose 相似文献
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《中国海洋大学学报(英文版)》2014,(4)
<正>Copyright Submfnion of a roanusatpt inks:that the work described has not been published before(exoept In the form of an abstrW or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere that its publication has been approved by ail 相似文献
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《中国海洋大学学报(英文版)》2014,(6)
<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research results on oceanography and marine fisheries.The fieldcovered include the physical,chemical,biological,geo- 相似文献
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Massimo GRECO 《山地科学学报》2014,(6):1383-1384
<正>The 35th IAHR World Congress was held in Chengdu,China from September 8 to September 132013.The title of the conference was:"The Wise Finds Pleasure in Water:Meandering through Water Science and Engineering".During the congress,1239 papers were presented in 139sessions for oral presentations and 7 sessions for poster presentations.After the Congress,a Committee was appointed to select some of the best papers presented at the Congress for publication,after a 相似文献
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As an important component of the cryosphere,sea ice is very sensitive to the climate change.The study of the sea ice physics needs accurate sea ice thickness.This paper presents an electromagnetic-induction(EM) technique which can be used to measure the sea ice thickness distribution efficiently,and the successful application in Bothnian Bay.Based on the electromagnetic field theory and the electrical properties of sea ice and seawater,EM technique can detect the distance between the instrument and the ice/water interface accurately,than the sea ice thickness is obtained.Contrastive analysis of the apparent conductivity data obtained by EM and the value of drill-hole at same positions allows a construction of a transformable formula of the apparent conductivity to sea ice thickness.The verification of the sea ice thickness calculated by this formula indicates that EM technique is able to get reliable sea ice thickness with average relative error of only 12%.The statistic of all ice thickness profiles shows that the level ice distribution in Bothnian Bay was 0.4-0.6 m. 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献