[talk-au] Did the Earth just move for you? RE WGS84

[Warin]

On 03/01/20 21:40, Dion Moult wrote:
> My impression was that the 1.8m jump was to do with the GDA standard (and
> therefore the MGA standards too).

It is not a jump, physically Australia is slowly moving NE all the time (in relation to the 'rest of the world').
Some time in the future we may bump into Indonesia, PNG + New Zealand, unless something changes.


> These seem like Australian specific coordinate
> systems that are being adjusted. I assumed that OSM stored its data in WGS84,
> which to my understanding is separate to a new definition of a GDA standard.
>
> However, my understanding on this topic is very poor, so if others can help
> explain the implications this has on OSM, if any, I'd really appreciate it :)

WGS84 is world wide, so Australia is moving in relation to WGS84.

Typical GPS error is >> 1.8 metres so the change is not that significant.

Other places in the world are also moving, but us Ozies are the fastest movers.