共查询到20条相似文献，搜索用时 62 毫秒
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朱以洲;李永树;吴晔晖;王久胜 《东北测绘》2013,(2):130-132,135
全球移动通讯系统GSM是目前较为广泛使用的一种数字移动通信网络。基于GSM及GIS技术,探讨了GSM Modem技术在地质灾害预警系统中的应用模式,研究了应用过程中涉及的部分关键技术和规范,并结合AT指令、ASP.NET和C#编程技术,设计、开发了基于Web技术的地质灾害数据采集与预警信息发布功能模块。最后,对该功能模块进行了应用试验,结果令人满意。 相似文献
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基于WebGIS云南滑坡灾害气象预警分析模型 总被引：1，自引：0，他引：1
针对云南主要由降雨引起的滑坡地质灾害现象．对云南近8年来的滑坡灾害数据和降雨量数据进行了分析,研究并设计了一种针对滑坡地质灾害发生的时空耦合预警分析模型。并在此基础上,通过与WebGIS技术的耦合。运用新一代的RIA技术Silvedight．基于MapGISIGServer平台,在异步响应的网络中使用流程化的操作方式构建出云南省地质灾害气象预警系统。通过实例检验表明该滑坡地质灾害气象预警分析模型的应用．能够为相关部门提供更精确、及时的减灾防灾对策。 相似文献
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在全国已经进入汛期之际,国土资源部、中国气象局联合召开地质灾害气象预警预报现场会、地质灾害气象预警预报工作协调领导小组第一次会和汛期地质灾害防治视频会,既是进一步贯彻党中央、国务院关于加强山洪地质灾害防御工作的战略部署,落实国家防总关于今年汛期防灾减灾工作部署的重要举措,也是对我国重点区域,特别是基层地质灾害监测预警以及国土资源、气象部门应急联动能力建设的一次检阅和交流,对深化国土资源与气象两部门的合作, 相似文献
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深圳市地质灾害评价与预警系统研究 总被引：3，自引：0，他引：3
深圳市从1980年设立特区以来,目前已从一个边陲小镇发展成为一个拥有400万人口的现代化城市。然而,大规模的城市建设破坏了原本脆弱的地质环境,引发了众多的地质灾害。本文首先阐述了地质灾害评价与预警流程,包括数据预处理、建立模型库、危险性区划、划分预警片区、获取气象和水文临界判据、预警结果制图输出和发布6个步骤;然后给出了地质灾害评价指标体系,分析了地质灾害评价与预警模型;最后设计了深圳市地质灾害评价与预警系统的总体结构,描述了各个子系统的功能,说明了系统运行网络拓扑结构。 相似文献
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为了满足河南省气象台的业务需求,实现对实时天气及灾害性天气的监测和预报预警,提出了采用B/S架构,基于WebGIS技术开发河南省实时天气监测预警系统的设计。该系统以Visual Studio 2013为开发平台,基于Microsoft.NET Framework框架,并利用Geographic Information System(GIS)的可视化技术和空间数据的分析处理技术,实现对河南省区域气象信息的实时监测。利用该系统,用户可以进行实时天气、灾害性天气的监测和报警,强对流天气分析以及预报预警产品的制作与发布。 相似文献
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针对目前陕县地质灾害信息采用纸质档案与电子文档管理的不足,利用GIS技术、数据库和网络技术,以ArcEngine作为基础平台,利用C#语言进行应用二次开发,建立了集地质灾害信息的存储、更新、查询、分析和发布为一体的管理平台,实现地质灾害信息的网络化管理,为地质灾害信息管理及应急预测提供技术支撑。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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GNSS系统及其技术的发展研究 总被引：3，自引：1，他引：2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引：13，自引：0，他引：13
介绍“４Ｄ”（即数字地面模型、数字正射影像、数字栅格地图和数字线划地图）系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献