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1:25万区域地质调查修测的核心任务是挖掘、利用前人资料和对前人资料的二次开发。在1:25万玉林市幅数字地质填图试点的过程中.总结出一套基于数字填图系统的前人地质资料利用与数据采集的工作方法。其工作流程和工作步骤可分为6个阶段:①前期准备阶段;②室内地质资料录八阶段;③野外数字地质调查阶段;④室内资料整理阶段;⑤图件编制阶段;⑥成果提交阶段。该工作方法与传统的地质调查方法相比,提高了地质调查的工作效率和质量,已基本上达到了在1:252万区调修测区推广应用的“实战性”要求。 相似文献
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1:25万民和回族土族自治县幅是中国地质调查局于2002年在全国首批启动数字区域地质调查试点项目。目的是通过1:25万民和县幅试点性数字地质填图,建立和完善1:25万整幅数字地质填图的“实战”技术要求,为计算机野外填图系统软件和硬件开发与升级、国际交流提供资料和依据。 相似文献
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数字地质填图技术中的数字剖面系统 总被引:4,自引:0,他引:4
数字填图系统(RGMAP)是中国地质调查局运用数字填图技术、自主研制开发的数字地质填图的GIS系统,它使传统的地质调查发生了巨大的变化。RGMAP由两大部分组成地质路线系统和地质剖面系统;每一部分包含两个子系统野外掌上机系统和室内桌面系统。数字剖面系统的野外掌上机系统的使用,使实测剖面的全部野外观测记录实现了数字化采集。数字剖面系统的桌面系统可以自动计算厚度,自动生成剖面图和柱状图,极大地提高了地质剖面的测量与剖面图制作技术。 相似文献
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T. Victor Loudon 《Mathematical Geology》1969,1(2):155-170
In a university department, small batches of geological data from different sources may be punched on cards for computer analysis. At the University of Reading efforts have been made to develop procedures for filing the cards for future reference. In a few topics, it has been possible to standardize methods of data recording. Otherwise, emphasis has been placed on documenting the data adequately. Without becoming involved in the complexities of computer storage, editing, and retrieval, a small data library has been developed in which data cards punched 5 yr ago can be found and understood today. 相似文献
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Today data processing technology offers new and attractive possibilities for creating and exchanging geological data. This technique will be of profit to policy makers and economists establishing national and worldwide reserves; to developing countries comparing their resources potentials with well-studied areas of like geological setting; to geological surveys, computerizing their archives; to explorationists making interregional and intercontinental comparisons; to conservationists keeping track of ephemeral phenomena; to environmentalists making interdisciplinary studies, and to geomathematicians.Much remains to be done, however, in this area where many enthusiastic starts have turned short and have made apparent the necessity of more coordinated efforts.From the information he could gather as Cogeodata research secretary, the author reviews the present state of the art in the subdisciplines of geology, and attempts to mention all the main aspects of geological data file building and interchange. 相似文献
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地质档案资料是指地勘行业多年来的工作积累下来的大量的地质勘察和开发的档案资料.建国后,地勘单位在国家的大量投资下,在地质勘查和开发过程中积累了大量的、丰富的地质档案资料,这些资料有着丰富的信息和重要的潜在价值.如何充分的开发和利用地勘行业地质档案资料是发展地勘经济的重要组成部分.特别是属地化后,地勘行业地质档案资料的二次开发.一定会在为我局和地方经济服务上做出巨大贡献. 相似文献
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Diverse global and local measures of variability appear in the geological literature and, along with methods used to apply them, have been subject to some debate. Measures of variability for three data types—replicate, locational, and compositional—are considered; the source and nature of the variability determine the appropriate type of measure. To illustrate the effects of these measures and expose their inadequacy when improperly applied, the variability of a three-column data set is interpreted under three different suppositions. Geologists need to be aware of the confusion and misleading results that can develop from the use of variance as a measure of variability for locational or compositional data. 相似文献
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中国地质大数据研究现状 总被引:4,自引:0,他引:4
地质大数据应用研究是国家大数据战略的组成部分。地质学属于数据密集型学科,与地球科学面临的问题息息相关。已经收集的和将要收集的大量数字国土相关数据,由于科学研究的需要,正在不断加以检验和扩充,并已更好地应用与服务于人类活动。重点介绍了国内外大数据研究现状及国家大数据战略,并从地质大数据的定义、特点、产生途径、技术架构等方面剖析国内外地质大数据的研究现状。将目前及未来地质大数据的发展研究方向分为地质大数据发现、地质大数据梳理、地质大数据存储、地质大数据分析、地质大数据应用5个方面。 相似文献
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