IGS Project Iceland Group 7 Jesper Sundien Petter Holmberg Alexander Harju Shaman Mahmoudi

Program Features Visualizes seismic events in the Iceland region using a visually pleasing 3D representation of geographic and seismic data. Allows the user to interactively select which seismic events to view, in regard to temporal and spatial context. Allows the user to freely view the seismic events from any angle and distance by modifying these preferences in real-time.

Visualization of Seismic Events Seismic events are represented as colored, semi- transparent spheres centered at the origin of the event relative to the geographical representation of the area. The size of an event sphere represents its spread (distance) factor. The color of an event sphere represents its magnitude factor. Weak events are almost white, and the stronger the event is, the more red it will appear. To allow the user to easily locate the geographic position of the event on the terrain surface, a narrow cone, centered at the event, is drawn through the terrain surface.

The Graphical User Interface The user controls the entire application with a mouse. Visualization preferences for the data, including preset viewing angles, are modified with an intuitive button interface controlled by left- clicking. Viewing angle and distance of the map is controlled by using the right or both mouse buttons at once and moving the mouse pointer.

Controlling the data selection The user controls the data parameters with plus and minus buttons using the mouse. Confirm selection with OK button. Play, stop and pause buttons are used to control the animation. Animimation speed can also be changed.