Abstract
Monitoring and warning of geological disasters accurately and in a timely fashion would dramatically mitigate casualties and economic losses. This paper takes Lanzhou city as an example and designs a Web-based system, namely the information system for geological disaster monitoring and warning (ISGDMW). Presented are its framework, key developing technologies, database, and working flow. The information system adopts a Browser/Server (B/S) structure and has three-tier architecture, combining in-situ monitoring instruments, the wireless sensor network, WebGIS techniques and the grey system theory. The framework of the ISGDMW can be divided into three categories: (1) in-situ monitoring system, it aims to monitor geological disaster sites and get state information of geological disaster sites; (2) database, manage in-situ monitoring data, antecedent field investigating data and basic data; (3) analyzing and warning system, analyze in-situ monitoring data, understand the deformation trend of the potential geological disaster, and release disaster warning information to the public. The ISGDMW allow the processes of geological disaster monitoring, in-situ monitoring data analysis, geological disaster warning to be implemented in an efficient and quick way, and can provide scientific suggestions to commanders for quick response to the possibility of geological disaster.
Highlights
IntroductionWe should depend on both real-time in situ data and quick response to the possibility of geological disaster
To mitigate geological disaster, we should depend on both real-time in situ data and quick response to the possibility of geological disaster
WebGIS is the integrated product of geographic information system (GIS) and internet technologies; in WebGIS, the internet technologies are connected with GIS in order to take advantage of their special characteristics, such as easy usability, use of the GIS data such as input, adjustment, manipulation, analysis, and output of geographical information and to bring out related service on the internet
Summary
We should depend on both real-time in situ data and quick response to the possibility of geological disaster. WebGIS offers a powerful and advanced approach to prevent and mitigate geological disaster, and it has played a significant role in terms of transmitting catastrophe data, analyzing the disaster condition, and releasing disaster information [3,4,5,6,7]. In situ monitoring data can be used to grasp the deformation trend of the geological disaster; in situ monitoring instruments (e.g., inclinometers, rain gauges, piezometers, and extensometers) must be playing an important role in the process of geological disaster mitigation [7,8,9,10]. We comprehensively utilize the advantages of in situ monitoring instruments, the wireless sensor network, and WebGIS techniques in terms of in situ monitoring, transmitting data, disaster analysis, and data management to design a Web-based system, namely, the information system for geological disaster monitoring and warning (ISGDMW). ISGDMW is a novel platform and is designed to improve practical efficiency of geological disaster mitigation in Lanzhou city
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