Skills Acquired:

• Employed buffer proximity analysis, reclassification, conversion between raster and vector data types, polygon overlay via intersection, and clipping
• Calculated land use statistics from layer attribute tables
• Produced a map displaying regions of the City of Vancouver at potential risk of inundation from a tsunami

Proportion of Total Area of The City of Vancouver prone to tsunamis

For each of the layers Vancouvermask (total) and Vancouver_danger (proportion at risk), I opened the attribute table, selected statistics, and summed the areas – calculate the area ratio

Area(Vancouvermask) = 131033339.95 m^2

Area(Vancouver_Danger) = sum(polygons constituting Vancouver_Danger)

                                                = 20,300,000 m^2

% Area of Vancouver in Danger = 131033339.95m^2/20314805.87m^2 * 100 = 15.5%

In both cases, the attribute table was opened; for Vancouvermask, this was simply the total area, while for Vancouver_Danger, the sum of the areas of all the polygons was summed by using the statistics tool for the Shape_Area column in the Attribute table. It is determined that 15.5% of Vancouver’s area is in danger.

 

Health care and educational facilities within the zone of the City of Vancouver that is tsunami-prone

Healthcare Facilities within Vancouver danger zone: False Creek Residence, Villa Cathay Care Home, Coast West Community Home, Broadway Pentecostal Lodge, Yaletown House Society

Educational Facilities within Vancouver danger zone: Emily Carr Institute of Art & Design (ECIAD), Institute of Indigenous Government (IIG), Henry Hudson Elementary, False Creek Elementary, St. Francis Xavier, Vancouver Montessori School, St. John’s International, Heritage 3R’s School, St. Anthony of Padua, Ecole Rose Des Vents

The facilities within the danger zone were determined by using the Clip tool within ArcToolbox, where the input was either Vancouver_health or Vancouver_education, and the ‘clip feature’ was Vancouver_Danger, the layer depicting the area of Vancouver at tsunami risk. Upon visual inspection, the number of educational facilities appearing on the map equals those listed in the Attribute table.