Several earth processes, plate tectonics and isostatic rebound, affect where a (x, y, z) locationis (or perhaps better is calculated to be) in a time step t1 in comparison to a different time step t2. Particularly in areas of the world such as California, USA this movement can be in the magnitude of centimeters per year. For some situationsthis shift in (x, y, z) locations could have a serious effect on a study, for example examiningsediment fluxes that rely on comparing raster cells and/or coordinates across different time steps oftenspanning several years or decades.
With current technologies we are able to fairly accurately monitor plate tectonics and isostatic rebound so in theory we should be able to integrate the time element to (x, y, z) coordinates, in essence (x, y, z, t).
Are there datums and coordinate systems that address the issue of shifting coordinates through time?
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With current technologies we are able to fairly accurately monitor plate tectonics and isostatic rebound so in theory we should be able to integrate the time element to (x, y, z) coordinates, in essence (x, y, z, t).
Are there datums and coordinate systems that address the issue of shifting coordinates through time?
أكثر...