tky2jgd.gsb
NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. After Tohoku earthquake of 2011 accuracy in northern Honshu reduced to 1-5m and in this area replaced by Tokyo to JGD2011 (tfm code 6714).
ESRI
2014-01-24
Geodesy.
See CRS code 4301 for recommended coordinate axis representation for the human interface.
Japan - onshore; North Korea - onshore; South Korea - onshore.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg