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The Design and Realization of .Net-based WebGIS Earthquake Prevention and Disaster Reduction Service System in Medium and Small Sized Cities

Author: WuWeiWei
Tutor: YangJianSi；LiYiRui
School: China Seismological Bureau, Institute of Geophysics
Course: Earth Exploration and Information Technology
Keywords: WebGlS . Net Urban Earthquake Disaster Mitigation Database technology Earthquake Disaster Prevention, Auxiliary countermeasures
CLC: P315.9
Type: Master's thesis
Year: 2009
Downloads: 253
Quote: 0
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Abstract


In a variety of natural disasters, earthquake disaster is one of the most serious disasters caused no casualties and economic losses, especially when its occurrence in a city or near the city, the more damaging. The application of GIS Urban Earthquake Disaster Mitigation service system is an important way to effectively mitigate urban earthquake disaster. Urban earthquake prevention and disaster reduction system is a comprehensive service system for urban construction, social management and public services such as multi-user, integrated application of GIS in the defense system of earthquake damage. \However, based on the traditional GIS technology Earthquake Disaster Mitigation service system the desktop standalone environment, there are many problems oriented range of small, single target, spatial data sharing problems, weak synergy, restricting the promotion and application of the system, limits social service functions of the system. In recent years, with the development and application of computer networks widely use of the Internet and publishing spatial data published on the Web for users of spatial data browsing, query and analysis capabilities of GIS development has become an inevitable trend. Network Geographic Information System WebGIS Internet technology applied to the development of the GIS product than the original GIS has the following characteristics: First, the emergence of WebGIS technology can speed up the acquisition of seismic information, any authorized network node or the user can Internet access to the system to provide information services and data; Second, distributed WebGIS technology made possible the integration of heterogeneous software or software modules as well as multi-source data; once again, WebGIS technology to make the system serve concept with great changes, its users any Internet-connected computer users; Finally, the emergence of WebGIS technology WebGIS technology introduced the field of earthquake disaster reduction research, and to broaden the applications of geographic information resources to improve the maintenance of spatial information, publish and query efficiency, achieve automated mapping of earthquake information data, made possible by the high degree of sharing of spatial data information within the scope of the whole society. The emergence of WebGIS technology to provide a new and effective means for earthquake disaster reduction system development to become a new impetus to promoting the development of Earthquake Disaster Mitigation service system and research focus. Today, the rapid development of urbanization, the earthquake disaster reduction is an important guarantee for the sustainable development of a city. Current urban earthquake prevention and disaster reduction systems are developed for the needs of the large cities. Compared with the big cities, the lack of due attention to the special needs of small and medium-sized cities Earthquake Disaster Mitigation. Especially small and medium-sized cities in China, mostly in the stage of rapid expansion of urban management and public service is relatively slow. Therefore, for small and medium-sized cities to establish an efficient and transparent, open the Earthquake Disaster Mitigation professional information service platform significant service functions of the small and medium-sized urban earthquake prevention and disaster reduction system should have the following aspects: ① regional earthquake disaster prevention headquarters to provide emergency rescue decision support, the result of the earthquake damage assessment data; ② earthquake disaster prevention agency for small and medium-sized urban areas to provide information exchange platform for coordinated operations, and assist various departments in the region to do a good job in the work; ③ permanent earthquake disaster prevention office provides all levels regional contingency plans and laws and regulations, and to play a staff role; unified ④ public management for small and medium-sized cities to respond to emergencies, timely, authoritative information media support system, to improve the degree of transparency and disclosure of information; ⑤ at the same time rich query retrieval, and science education, and other social functions, and to expand the range of applications of the outcome of the earthquake disaster reduction technologies and application areas. Today, the rapid development of urbanization, the earthquake disaster reduction is an important guarantee for the sustainable development of a city. Only on the basis of a comprehensive and correct understanding of the characteristics of small and medium-sized cities Earthquake Disaster Mitigation, give full play to all levels of government and the community to participate in the earthquake disaster reduction work, in order to enhance the overall response to the earthquake disaster rapid response capability of small and medium-sized cities in China, decision-making guidance capability technical support capability and disposal efficiency, in order to maximize the reduction of urban earthquake disaster. This article is in this context, try using WebGIS technology to establish small and medium-sized urban earthquake prevention and disaster reduction service system so that all levels of government, specifically to understand the weak link of the regional seismic fortification, the regional seismic performance of the building and possible affected the degree, to assist the Government to take full planning and the use of a variety of prevention of reinforcing and mitigation measures: Command Center provides all levels of government and the relevant functional departments of the devastating earthquake contingency plans; existing street construction has been built, the market squares, parks and other infrastructure, to provide residents with the necessary earthquake emergency evacuation routes and shelter; medical, police, military and other emergency response force for the organization, coordination, and efficient implementation of the earthquake relief work to provide a unified, professional and open platform; same time, systematic collection of digitized map of the city, building, etc. for the various sectors of the community service. Main research content and results are reflected in the following aspects: (1) system to the guidance of the scientific theory of comparative analysis based on the realization of WebGIS technology and WebGIS products at home and abroad, the use of the network of knowledge, combined with the earthquake disaster reduction the characteristics of the work, the combined network, geographic information, seismic data, seismic damage assessment, earthquake emergency multidisciplinary design WebGIS service system for earthquake disaster reduction needs of small and medium-sized cities. (2) This paper analyzes the mainstream of current WebGIS system development technology, opt NET as an independent development platform, with the platform of the framework superiority using VisualStudio.NET and ASP.NET support services system in the environment. NET interface and functional design. NET Web Service to create some general map data and functionality encapsulated, and build a WebGIS-based infrastructure development and runtime environment spatial information service platform, easy integration and scalability. (3) using C #, ASP as a development language, developed based on Aspmap for.Net, Yanliang application examples for small and medium-sized cities, and completed the development of the service system. The system provides a rich WebGIS functions, a comprehensive analysis of the multiple functions of data and information query functions, external urban earthquake prevention and disaster reduction information service, to achieve the expected design goals, able to meet the public on earthquake disaster reduction and seismic events emergency needs. The application of the above theoretical research, development Yanliang District WebGIS earthquake disaster reduction information management and decision support system \

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CLC: > Astronomy,Earth Sciences > Geophysics > Earth ( rock circles ) physics ( geophysics ) > Seismology > Engineering seismology
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