Know the Sources of your Data

datumThe tectonic plate that Australia sits on is moving at a rate of 7cm to the north every year. This creates a discrepancy between local coordinates and global coordinates that are derived from GNSS. To address this the Geocentric Datum of Australia will be adjusted on 1 January 2017 by 1.8 meters to the north. This will bring local and global coordinates aligned in 2020.

As Joseph Kerski raises in his article, this “is a nice reminder that physical geography matters.” He reminds us to “know the sources of your data, including the datum itself.” An important reminder.

Read Joseph’s full article, or browse his blog.

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