Sea level rise and Google Earth / Maps
A great day with Priory School yesterday, examining the issue of sea level rise in the Portsmouth area. We trialled a number of hands-on sessions, which were great fun and will write about these when we have media releases completed to use the photos of students working on the beach.
For now, here are some ideas that were jogged by looking at how ipads might be used to inform a walking tour of a coastal area.
The image below is of a map overlay created in Google Earth, showing the flood cells and sub-cells delineated by the council. Image overlays are fairly easy to create.

The Google Earth file was then saved and uploaded online. Pasting the url of the online file into the search box of Google Maps, allows you to see it as above. Note that you can use Google Maps in Earth mode so that 3D buildings show up and you can tilt the map.
We also created some polygons in Google Earth, again an easy thing to do. The different polygons were given colours and made opaque so that you could see the layers and the underlying imagery. You can see the key to the left below as well.

The ordnance datum in Google Earth and the altitude of the different layers is not quite nuanced enough to show localised flooding predictions on a 25, 50, 100 year timeline and looking to finesse these techniques before sharing more fully, but hope you get the idea.






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