共查询到20条相似文献，搜索用时 218 毫秒
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陈定国 《水文地质工程地质》1989,(2):40-43
本文介绍了我国地震目录的种类,其参数的可信程度。作为工程上需要使用地震目录时,如何提高地震目录的精度。当不同的目录对同一地震的参数有矛盾时,可以从工程学或地震学方面进行处理。 相似文献
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文献目录是进行文献检索时极重要的工具书。本文介绍了中国地质文献目录中的机读型和印刷型书本式，概述百余种可供检索一定时期的工具书，因篇幅所限，多数工具书仅能提供名称、编辑单位及出版时间等项目。 相似文献
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浅谈成果地质资料目录数据库建立及利用 总被引：1，自引：0，他引：1
地质档案资料是国家重要的信息资源,成果地质资料目录数据库的建立及利用,提高了地质资料管理的效率和水平,实现了地质资料目录信息资源的共享,并将在国家经济建设中发挥它的重要作用。 相似文献
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江苏省成果地质资料目录查询数据库于2 0 0 2年11月底顺利建成,并通过专家的鉴定。自2 0 0 3年4月1日起,正式在因特网上向广大用户提供地质资料查询服务。经过一段时间的试运行,该目录查询数据库最终于8月初在省地质资料馆正式开通,它收录自1914年以来,在江苏省范围内形成的,省地质资料馆所藏的各类地质档案资料4 10 0余种(档)。每种(档)档案资料的73个著录项目,向广大用户提供了多种检索途径,其查询结果可以在打印机上打印输出。它的开通,将结束多年以来人们一直用手工查找地质资料的历史,大大地提高了地质档案资料的可获得性,使馆藏地质档… 相似文献
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成果地质资料目录数据库及其检索 总被引：1，自引：0，他引：1
在简要介绍成果地质资料目录数据库的收录范围、特点及建库进展的基础上，重点论述了该数据库的检索过程（查询系统启动、字段查询、图形查询）、查询结果的显示以及检索策略，以达抛砖引玉之目的，使其尽快地为地质矿产工作、国民经济建设乃至全社会服务。 相似文献
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Markus Innerebner Armin Costa Ekaterina Chuprikova Roberto Monsorno Bartolomeo Ventura 《Earth Science Informatics》2017,10(1):55-68
Scientists as well public institutions dealing with geospatial data often work with a large amount of heterogeneous data deriving from different sources. Without a well-defined, organized structure they face problems in finding and reusing existing data, and as consequence this may cause data inconsistency and storage problems. A catalog system based on the metadata of spatial data facilitates the management of large amount of data and offers service to retrieve, discover and exchange geographic data in an quick and easy fashion. Currently, most online catalogs are more focusing on the geographic data and there has been only few interests in catalogizing Earth observation data, in which in addition the acquisition information matters. This article presents an automatic metadata extraction approach that creates from different optical data deriving from various satellite missions of scientific interest (i.e. MODIS, LANDSAT, RapidEye, Suomi-NPP VIIRS, Sentinel-1A, Sentinel-2A) metadata information, based on an extended model of the standard ISO 19115. The XML schema ISO 19139-2 with the support of gridded and imagery information defined in ISO 19115-2 was examined, and based on the requirements of experts working in the research field of Earth observation the schema was extended. The XML schema ISO 19139-2 and its extension has been deployed as a new schema plugin in the spatial catalog Geonetwork Open Source in order to store all relevant metadata information about satellite data and the appropriate acquisition and processing information in an online catalog. A real-world scenario that is productively used in the EURAC research group institute for Applied Remote Sensing illustrates a workflow management for Earth observation data including data processing, metadata extraction, generation and distribution. 相似文献
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MapGIS数据向ArcGIS数据格式转换方法的实践与探讨 总被引：1，自引：0，他引：1
由于在地图编辑和数据分析方面各具优势,MapGIS和ArcGIS逐渐发展成为目前国内被广泛使用的地理信息系统平台,实现二者间数据安全转换将有利于对两种系统功能的充分利用,大大提高空间数据库的生产效率和使用率。在分析比较两种系统空间建模思想及专有数据格式的基础上,提出了将空间数据从MapGIS平台转换到ArcGIS平台上的基本思路,并通过工作实例进行了数据转换验证,对过程中存在的问题进行了总结,形成了一套较为成熟的技术方法。 相似文献
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Universal cokriging is used to obtain predictions when dealing with multivariate random functions. An important type of nonstationarity is defined in terms of multivariate random functions with increments which are stationary of orderk. The covariance between increments of different variables is modeled by means of the pseudo-cross-covariance function. Criteria are formulated to which the parameters of pseudo-cross-covariance functions must comply so as to ensure positive-definiteness. Cokriging equations and the induced cokriging equations are given. The study is illustrated by an example from soil science. 相似文献
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