The visualization layer dynamically renders data from the application service layer for the client. The application service layer retrieves data from the database service layer, pushing real-time data to the client by means of the visualization layer, and provides map services. The database service layer is responsible for managing real-time data and spatial data together with nonspatial data. The acquisition layer collects real-time seismic data. This model consists of four layers: acquisition, database service, application service, and visualization layers. We propose a four-tier model for the real-time 3D visual earthquake information publishing based on WebGIS and virtual globe. To meet the needs of earthquake emergencies and post-earthquake disaster mitigation, we propose in this paper a new solution to the real-time problem for GIS that integrates WebGIS, a temporal model, and 3D graphical user interfaces to provide real-time display and analysis tool for earthquake disaster mitigation. The simulated environment are widely different from three-dimensional (3D) world that people actually experience. Most existing systems based on WebGIS use two-dimensional (2D) maps (JMA 2015 USGS/NEIC 2014 IRIS 2015), that is, using earthquake information and terrain layers to simulate real earthquake environment. Existing GIS-based application systems are weak in processing dynamic data, such as the latest seismic events, or the calculation of seismic intensity after an earthquake (Yu and Gong 2012).
![3d earthquake live feed 3d earthquake live feed](https://i.ytimg.com/vi/iL3_6d_Do_c/hqdefault.jpg)
![3d earthquake live feed 3d earthquake live feed](https://i.ytimg.com/vi/vNpmI0ThWgY/maxresdefault.jpg)
Nevertheless, these systems are insufficient when dealing with seismic data, namely timely (real-time or near real-time) publishing and visualization of seismic information. 2009).Īlthough GIS is widely used in earthquake monitoring and prediction, it also enables to improve earthquake damage prevention, situation assessment, post-earthquake emergency relief, and so forth. For post-earthquake transportation, optimum pathways are rapidly obtained using GIS-based systems (Cao et al. Historical seismic data can also be analyzed with GIS (Cubellis and Carlino 2004 Pessina and Meroni 2009). Researchers use WebGIS to assess hazards and seismic risk (Zerger and Smith 2003 Pessina and Meroni 2009 Sato and Harp 2009 Hashemi and Alesheikh 2011) and to share valuable information resources with the public by publishing various analytical seismic results on the Internet and elsewhere. As a part of hazard management, earthquake disaster researchers have used GIS to facilitate disaster management. It also increases the efficiency and effectiveness of hazard management. As a tool for integrating multisource data, GIS has a profound impact on disaster risk reduction and provides the possibility of two- and three-dimensional (2D/3D) visual analysis of massive geospatial and hazard data (Abdalla and Tao 2004 Paar and Clasen 2007). Scientific and effective organization of the information is needed. However, earthquake prevention and mitigation require handling of complex data, including various spatial and temporal scales, historical records, real-time monitoring, and subsequent analytical results. Significant earthquakes often lead to loss of life, destruction of infrastructure, and consequently economic loss.
![3d earthquake live feed 3d earthquake live feed](https://images.sftcdn.net/images/t_app-cover-l,f_auto/p/d77fb49c-9a61-11e6-9a5a-00163ec9f5fa/3169525160/earthquake-3d-screenshot.jpg)
![3d earthquake live feed 3d earthquake live feed](https://www.wolton.net/images/red2.gif)
It also facilitates better communication between researchers engaged in geosciences and the interested public. It provides a powerful tool for display, analysis, and decision-making for researchers and administrators. The system can not only publish real-time earthquake information but also display these data and their background geoscience information in a 3D scene. On the basis of the model, we implement a real-time 3D earthquake information publishing system-EqMap3D. In this paper, we propose a novel approach for real-time 3D visual earthquake information publishing model based on WebGIS and digital globe to improve the ability of processing real-time data in systems based on WebGIS. Although they can provide a visual analysis platform based on GIS technology, they lack a general description in the extensibility of WebGIS for processing dynamic data, especially real-time data. Researchers use WebGIS to assess hazards and seismic risk. In hazard management, earthquake researchers have utilized GIS to ease the process of managing disasters.