GIS Lab 3 – Planning for a Tsunami in Vancouver

In our third lab about constructing a map that informs the danger zones of a possible tsunami in Vancouver. In my findings I determined that 11.35% of Vancouver’s total area is under danger as show in this map of Vancouver’s tsunami danger zone.

Map of Vancouver's Tsunami Danger Zone

With the data for the lab here is how I was able to calculate that total area in danger percentage:

First I looked at the total area of Vancouver by opening an attribute table for the Vancouvermask layer and looking at the Shape_Area value. Then I added a new field to the table and changed the field calculator to get the area from m^2 to km^2 to simplify the numbers. I summarized the different landuse types that might be affected by a tsunami by categories and looked at each land use’s total area, also after converting it into km^2 from m^2.

Lastly I used the statistics tool in the attributes table to determine the total area of the land that may be affected by a tsunami and divided that by the area of Vancouver found in the previous question.

With the new map I had constructed I was able to identify the following health and education facilities in risk of being devastated by a tsunami.

Health Facilities in the Danger Zone Education Facilities in the Danger Zone
False Creek Residence Emily Carr Institute of Art and Design
Villa Henry Hudson Elementary
Cathay Care Home False Creek Elementary
Broadway Pentecostal Lodge St Anthony of Padua
Yaletown House Society Ecole Rose Des Vents

To get this list I went and used the Select by Location tool to find the health and education facilities in Vancouver that were found in the tsunami danger zone. From there I exported the selected facilities data into new layers called Education_Danger and Health_Danger. I found the specific entries by looking at the attribute table.

 

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