And here it is! My first public experiment with Google Earth.
Some time ago I stumbled upon the Earth Impact Database. A table with all 172 confirmed impact structures on earth’s surface. Putting one and two together I figured it would be nice to see those impact structures visualised inside GE. I also figured it to be a nice side-project to learn PHP, KML and XML on the way. After some trial and error, some code-borrowing, testing and hacking I present you:
A top 25 of the largest confirmed impact structures on earth.
If you were impressed by the dinosaur extermination power of the Chicxulub crater off the Yucatan peninsula in Mexico. Wait till you see the Sudbury and Vredefort ‘dents’. 😉
“But wait, you said there were 172 impact craters!” Yes I did. And I have them standing by for later release.
The fact is. The above kmz-file is a network link. Meaning it will fetch the data from ThinkLemon every time you start GE. That’s a good thing because every time I update something you will get the updated structures. The downside for me is bandwith and ‘neighbours’. I don’t want to bring the server down because of my experiments. 🙂
In due time I will release sets of impact craters for your enjoyment. (After I clean up the code, do some optimalisations, tweak the data, etc…)
Update: The top 10 is no longer a top 10 but a top 25. So you’ll get all impact craters ranging from the whopping 300km Vredefort in South Africa to the mere 30km Shoemaker (formerly Teague) in Australia. Furthermore, the size indicator now shows the correct (estimated) diameter and the placemark icon shows an ‘impact’ icon. I hope you’ll enjoy. More improvements to follow at a later date.