**Visualization the Natural Disasters Simulations Results Based on Grid and Cloud Computing**

E. Pajorova and Ladislav Hluchý

*Institute of Informatics, Slovak Academy of Sciences, Slovak Republik* 

### **1. Introduction**

84 Emerging Informatics – Innovative Concepts and Applications

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Every year, forest fires, floods and landslides cause enormous damage of vegetation and fauna, environment and property and bind significant human resources. Particularly in national parks and natural reservations, unique areas of high degree of protection can be devastated by fire. For instance, during the destructive forest fire in the Slovak Paradise National Park (Slovakia) in 1976, very unique vegetation was destroyed in the Kyseľ Gorge, where the recovery into the former state will last 200 years .

Till now (thirty three years after the fire), this locality is closed for tourists because of the vast damages. Topic of a lot of projects is how to prevent such disasters. Our research in institute is oriented on GRID and Cloud computing. A lot of international projects oriented on natural disasters utilize the HPC (High Performance Computing), grid or cloud computing and within such solution raises requirement of visualization service for presentation of the intermediate or final research results. Our basic aim of our research resolved in projects is the creation Visual service for the Modelling and 3D Rendering of Natural Disasters, before Fire, floods and landslides. Changing input data of Fires spread using to generate new outputs very quickly. Grid and actually Cloud computing on a lot of Clusters and On-line 3Dvisualisation service can allow new scenes of Natural disasters spread. Outputs are using for far adjustment to liquidation the Natural Disasters. 3D\_visualization service for animation Natural Disasters should integrate visualization requests of any kind of application solved in our institute and before solved in international projects oriented on environmental problems. The natural disasters like fires and floods or landslides become subject of science in research institutions more and more frequently Many applications from this area are using different kinds of simulation tools, which are producing output data for displaying the results of the computation. The purpose of the visualization service is to model and display results of various simulations of natural disasters like are fire spread in time, fire intensity, flood velocity, landslide activity etc Such service requires unified standards like integration of input data formats and especially creation of unified visualization tool. The purpose of 3D viz. service is to model and display intermediate or final results of various simulations of natural disasters like fire spread in time, its intensity and erosion or floods in time or landslides as well. The output of the service is various scenes of terrain by different simulation outputs. Output of the service can also be the files representing the virtual reality of natural disaster and also files, which are

Visualization the Natural Disasters Simulations Results Based on Grid and Cloud Computing 87

decide in which phase of the computation the visualization tool is activated. Alternatively, the tool can be run after the whole computation is completed. While the computations are performed, the user can observe the contents of directories with input and output data on the Storage Element. A simulation output is in a certain phase considered to be the input for the visualization process. In the next cycle, the user prepares a new configuration file and

The purpose of this final phase is the display and analysis of output files from the second phase.This phase takes place on the client graphical device or in Grid to instal plugin. In new design for on-line visualisation tool is included also online approach for rendering . Examples from visualization scenas are shown on pictures.On Figure 1. and on Figure 2. we can see pictures from big Fire in Krompla region - Slovak republik. Figure 3. and Figure

Fig. 1. Large Fire in Krompla region - Slovak National Park "Slovensky raj'', firespread in

runs the visualization tool as a new application.

4. - pictures show visualization results from flood on river Vah.

**2.3 Displaying the scenes** 

time 6 days

generated as input for VR-Systems. 3D service was tested with outputs from applications, which were solved in our institute and also by data from applications of the international natural disasasters projects (Astaloš, 2010) .

Natural disasters simulation is a very complicated, challenging problem sensitive to the input data required. Therefore, intense research and development of sophisticated software systems and tools is extremely important for Natural disasters fighting management purposes (Gruz, 2003). For example for Slovak forests, original methodology for forest vegetation classification and new fuel models have been developed and proper forest fire simulations related to the locality Krompla (National Park Slovak Paradise), where the large destructive fire appeared in 2000 and its reconstruction have been analyzed. These efforts induced the need of better auxiliary tools for 3D visualization of obtained simulation results and for animation of the forest fire spread. In this paper, new 3D visualization technique for real forest fire simulation and fire behavior and for flood and landslide modeling is described (Orland, 1994). The importance is increasingly expanded for environmental problems (Glasa, 2011).
