13.07.2015 Views

Download PDF - COINAtlantic

Download PDF - COINAtlantic

Download PDF - COINAtlantic

SHOW MORE
SHOW LESS
  • No tags were found...

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

11 th International Symposium for GIS and Computer Cartography for Coastal Zones Managementtional awareness of risk in the landscape). Similarly, we need some way to evaluate whether (and if so, how) all ofthe tsunami risk information actually educates citizens, and translates into mental models of risk zones and safezones in everyday space. These are exactly the problem spaces that Citizen Risk was designed to investigate.Citizen Risk – an agile situated risk perception toolCitizen Risk is a deployable tsunami risk perception gathering system that combines mobile location-aware devices,and volunteered geographic information (VGI, see Goodchild, 2007) in the form of direction estimates (seeMontello et al., 1999). Citizen Risk was developed over two years. Several phases of field tests were conducted in2011 (Hedley, 2012). Field data collection for research purposes began in 2012 and is ongoing. Both system testsand field data collection were conducted in the District of Ucluelet.Citizens are asked to point in the direction of safe ground from where they are standing, based on their best estimateof its location. These direction estimates are attached to the situated coordinates where the citizen made theestimates, along with contextual data. The contextual data includes: local or visitor; seen a tsunami map, yes or no;if seen, where? These simple factors provide powerful variables with which we can analyze the data, and comparecitizen direction estimates for safe ground, and which direction to move first (such decisions are critical to successfulevacuation). For example, we expect locals to perform better in locational awareness and evacuation route identification;we expect everyone to perform worse after dark; we expect dense vegetation and low visibility conditionsto affect directional estimates.Figure 1. (top left) tsunami risk map in Ucluelet Community Centre showing (darker) tsunami risk zones beneath 20m and(lighter) safe zones above 20m; (top right) conducting field data capture with Citizen Risk; (bottom left) an example of data outputfrom Citizen Risk – you can see a range of examples of citizens who are pointing to what they can see, what they know, orpointing across large risky zones when in fact safe ground is much closer to them; (bottom right) presenting same-day results tothe community, demonstrating agility and low inertia of Citizen Risk as a risk intelligence tool for community planners.75

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!