GIS is essentially the laying of information / data onto a base map. It allows large amounts of information to be seen by layering one set of information on to another. The base information is a map of the area being studied.
This map shows the layer potential lava flow data onto a base map of an area of Hawaii in order to see which houses are more likely to be affected by a volcanic eruption should it occur.
Today we are going to explore GIS to identify how they can be useful to solve spatial problems
We will use two scenarios to explore how GIS work to solve problems
Christchurch over time
Hazards in Hawaii