88
NGS’
RESPONSIBILITIES
Analyzed
the vertical control network to separate bias shifts into components: changes due to
datum definition, crustal
movement, improved corrections applied to leveling data to account for systematic
errors, and removal of
adjustment distortions in NGVD 29
Incorporate other data, e.g., COE and/or
USGS data, into NAVD 88 (data must be in computer-readable form)
Educate NAVD 88 users