[IGSMAIL-7319] Invitation to submit abstract: AGU Session on Scientific and practical challenges of replacing NAD 83, NAVD 88 and IGLD 85

[Dru Smith]

Colleagues,

   We draw your attention to AGU Fall Meeting session G019 titled 
"Scientific and practical challenges of replacing NAD 83, NAVD 88 and 
IGLD 85".  This session is focuses on the very broad ranging set of 
issues surrounding all aspects of replacing (traditionally named) 
horizontal, vertical and dynamic height datums simultaneously, en masse.

Just a few of the topics relevant to this session include:
(1) defining a geocentric reference system fixed to a moving and 
deforming continent
(2) defining a geoid-based, continental-wide vertical datum
(3) implementing time dependencies including geoid change
(4) creating accurate transformations between datums
(5) defining the role of private RTK networks
(6) determining dynamic heights from GPS without leveling
(7) building geospatial databases capable of handling historic static 
data along with modern time-dependent data
(8) collaborations with neighboring countries to ensure compatible and 
seamless reference systems across the continent.

Submit your abstracts here: 
https://agu.confex.com/agu/fm16/preliminaryview.cgi/Session12899

Thank you, and we look forward to seeing you in San Francisco!

Dru Smith and Mike Craymer