Besides having geometric, thematic and topological properties, geographic phenomena also change over time and are thus dynamic phenomena. Examples include identifying the owners of a land parcel in 1972, or determining how land cover in a certain area changed from native forest to pasture land over a specific time period. Some features or phenomena change slowly, e.g. geological features or land cover, as in the example just given. Other phenomena change very rapidly, such as the movement of people or atmospheric conditions. For an increasing number of applications, these changes themselves are the key aspect of the phenomenon to be studied. For different applications, different scales of measurement will apply.
Where and when did something happen?
How fast did this change occur?
In which order did the changes occur?
Explain and be able to apply basic vector and raster spatial data structures including selecting a suitable data structure for geographic phenomena (level 1, 2 and 3).