ISEA3H DGGRS
for Combined Elevation from SLA and Bathymetry from MPA (including 1.556m datum adjustment)
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A Discrete Global Grid Reference System based on the Icosahedral Snyder Equal Area projection, with aperture 3 hexagonal zones, using an indexing scheme based on ISEA9R.
URI: http://www.opengis.net/def/dggrs/OGC/1.0/ISEA3H
CRS: OGC:1534
ISEA3H DGGRS zones