Using GIS to visualise the impact of physical and human processes on coasts
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Lesson details
Learning outcome
I can use GIS aerial imagery and webmaps to visualise the impact of physical and human processes on coastal landscapes.
Key learning points
- GIS uses historical imagery to visualise and analyse how the coastline changes over time. This is called temporal data.
- GIS uses historical maps to analyse how the coastline changes using georeferenced older maps.
- GIS apps which enable visualisation of temporal data include Esri Wayback and NLS Maps.
- GIS apps use historical imagery and historical maps to visualise and measure change such as the rate of coastal erosion.
Keywords
Historical imagery - photographs from any time in the past which can be compared with more recent photographs including aerial, satellite or conventional
Temporal data - information which is tied to a particular point in time, so that data can be time-enabled (also known as spatiotemporal data)
Historical maps - maps from any time in the past which can be compared with more recent maps
Georeferenced - information which has been tied to a particular location (geolocated), using an agreed system such as latitude and longitude
Common misconception
Confusion between similar sounding GIS tools in Esri Wayback; Use of 'Measure tools' in NLS Maps.
CfU to clarify learning and procedures e.g. similar sounding GIS tools in Esri Wayback: ‘Toggle Animate Mode’ ‘Toggle Swipe Mode’; careful use of 'Measure distance' tool in NLS Maps along with 'Swipe', ensuring line is perpendicular.
Teacher tip
No matter what your level of experience is with GIS, go through all the steps yourself first until you feel confident and fluent. Don't worry if you make a mistake, everybody does, even experienced practitioners!
Equipment
The lesson will require students to have access to a suitable IT device e.g. laptop. Some tasks would be facilitated by the students using a mouse for more effective and faster control of the cursor.
Licence
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