-------- Original Message --------
Subject:        Re: Google Earth map coverage
Date:   Wed, 28 Mar 2007 09:52:46 -0700
From:   Matt Fox <[log in to unmask]>
To:     Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>
CC:     <[log in to unmask]>



Google gets it's imagery from many different sources.  They don't actually
own it, they just license it.  So it all just depends on where the original
imagery comes from.  Any one particular area probably won't get updated more
than once ever 3-5 years, if not longer.

Also, the high resolution imagery in Google Earth is probably from aerial
photographs, not satellite.  So you can imagine the resources it takes to
fly an aircraft over a large area such as a county, process 1,000's of
photographs, etc.

Matt Fox

----- Original Message -----
From: "Maps-l" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 28, 2007 8:21 AM
Subject: Google Earth map coverage


> -------- Original Message --------
> Subject:        Google Earth map coverage
> Date:   Wed, 28 Mar 2007 10:25:06 -0400
> From:   Karen Berquist <[log in to unmask]>
> To:     <[log in to unmask]>
>
>
>
> A user who recently noted that in Google Earth the satellite imagery for
> Biloxi, Miss is post-Katrina and the imagery for New Orleans, La is
> pre-Katrina has asked how imagery selections like this are made.  Can
> anyone shed any light on this question?
>