[Year 12 IT Apps] Perhaps off-topic - NASA City Lights 2012

[Roland Gesthuizen]

Took me a little while to figure this out.

It isn't a bug and it isnt empty.  If you look to the RHS of Melbourne there is a similar cloud of lights in the ocean. These are the oil rigs. I have zoomed into them here.

Compare with this map
http://119.63.205.89/~baird/images/stories/WorkBoatWorld/2009-04/bassstraitfields.gif

My guess is that they have added some processing to enhance the lights or contribution of rural areas.

The expanse of lights you observed in WA probably relates to the lights in some of the mining areas and towns. Can anybody confirm this?



Regards Roland

Roland Gesthuizen | eLearning Leader 
Keysborough College DEECD
http://about.me/rgesthuizen

"Never doubt that a small group of thoughtful, committed citizens can change the world; indeed it is the only thing that ever has." --Margaret Mead

On 13/12/2012, at 11:49 AM, Colin Sutton <oz.sutton at gmail.com> wrote:

> Hi all
> 
> I originally saw this on the Diigo Ed list (but no mention of this issue), but stumbled across it again on the ABC site:
> http://www.abc.net.au/news/2012-12-12/explore-nasas-black-marble-earth-at-night/4423768
> (Explore the Earth at night using this interactive version of new high-resolution satellite imagery from NASA.)
> 
> Zoom in on the west of Australia and look at all the lights!
> Tick off the City Lights 2012 box and there's NOTHING there (we all know that!)
> 
> Any explanation for ALL those lights? Is it a data error (seems unlikely and not obvious in other continents that you expect to be "empty"). Mining??
> 
> It's nearly the last week so we ALL have LOTS of time to ponder this!
> 
> Regards
> 
> COLIN SUTTON
> St Helena SC Term 4 contract
> 
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