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View Diary: DKos Special Supplement: Plate Tectonics And The World’s Changing Geography (Part 2 of 2) (68 comments)

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  •  Plate Tectonics wreaks havoc with surveying (3+ / 0-)
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    RiveroftheWest, janislav, mightymouse

    Now that we have spaced based reference frames (GPS), we realize that fixed coordinate systems need to be updated every 10 years or so.

    •  now this is new. . . (1+ / 0-)
      Recommended by:
      RiveroftheWest

      and I haven't realized this until you mentioned it. I was a different kind of GPS survey (for the Forest Service), also topographical mapper, and back then, in the 90s, I even asked my boss how long the polygons would be effect (some of the stuff I was doing and later filed in GIS downloads and such). He said "fairly often." Now THAT'S job security working at its best, don't you think jb oahu? Thanks so much for posting your comment. I think I"m learning more from this two-part diary series than any others and getting most of the input from the rest of you. I think I got the better deal!

      Treat the world (yourself, and others) as part of a living organism. Everyone and everything will benefit.

      by richholtzin on Wed Apr 17, 2013 at 06:41:29 AM PDT

      [ Parent ]

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