Post on 14-Apr-2017
Raising awareness of flood hazards through geovisualizations:
Raising awareness of flood hazards through visualizations:A case study of the Sunnyside Community in CalgaryAlison ChadwickSimon Fraser University
Calgary June 2013 Floods Problem Context
Emergency Planning, Evacuation & Mitigation Bow and Elbow River flooded over 48 hours $400 million damages (infrastructure/buildings)4 fatalities & affected >75,000 people evacuated Lack of preparedness & awarenessCase-study: Sunnyside communityFlash floods (14 days later)Further damage: storm sewage clogged (debris)loss of running water, etc. Rhodes, Ted. Calgary Community of Sunnyside seen on June 21 and June 27. Photograph. 2013. Calgary Herald, http://o.canada.com/news/calgary-alberta-flood-before-and-after-photos-one-week-later (accessed September 28, 2014).
Problems and ChallengesLack of preparation & awareness among residents of the Sunnyside neighbourhood Lack of flooding geovisualizations in space and time with 3D landscapes to allow citizens to detect when to evacuate
2D GIS and 3D GIS scenes to illustrate how 3D visualizations portray a more realistic perception of floods Implement 3D geovisualization simulations for multiple perceptions of the community during a floodApply 3D GIS slope analysis to demonstrate topographic influence on floods and secondary effects of thunderstorms
Geovisualization Objectives Develop a set of geovisualizations designed to enhance residents understanding of flooding events through a 3D lens, enabling citizens to detect when to evacuate their homes
Visualization Design & Development2D GIS spatial maps of Sunnyside communitySlope AnalysisFloodplain & Google Earth Imagery3D GIS ArcScene3D ScenesTime-Interval Animation3D ArcScene Animation3D Google Earth visualization Google Earth Flythrough
2D GIS maps- slope analysis & flooding
3D ArcScene Scenarios
SketchUp Buildings
Time-Interval Flood Animation
3D ArcScene Animation
Google Earth Flythrough
3D GIS ArcScene lacks three dimensions in hydrology & road networksAssumption of flood levels rising linearly as opposed to varying in time and space Google Earth typology may not be as accurate as digital elevation model
Visualization Limitations
Future Research
Virtual Environments (VE) to simulate relationship of flooding and rainwaterUnity rain water simulation (lack of time/ability/limited expertise)VE to perceive interaction with mitigation structures (ie. flood walls)Implement tools for mitigation/evacuationsmartphones & other devices enabling residents to easily visualize multiple scenariosand their impacts on homes. Visualization of locations with greater typology interaction with floods in preparation for evacuation
Thank you!