Introduction to Geodetic and Tidal Vertical Datums (webinars)

August 16 and 18, 2011

Two presentations to be given on separate days. Webinars will be recorded for future posting.

Introduction to Geodetic Vertical Datums

Tuesday, August 16, 2011, 1:00-4:00pm ET

Presenter: Dave Minkel

To download the .mp4 file, click here.

To access the PowerPoint presentation, click here.

Summary of topics covered: The North American Vertical Datum of 1988 (NAVD88) and the National Geodetic Vertical Datum of 1929 (NGVD29), and their relation to tidal datums.  This talk will also cover topics such as the National Spatial Reference System, types of heights, the Geoid model, gravity data and CORS and OPUS.

Introduction to Tidal Datums

Thursday, August 18, 2011, 1:00-4:00pm ET

Presenters: Michael Michalski and Scott Duncan

To download the .mp4 file, click here.

To access the PowerPoint presentation, click here.

Summary of topics covered: Tidal datums and their applications, interpolation between National Ocean Service (NOS) tidal stations, collecting tidal data relative to a local suite of bench marks, and the relationship to the latest national tidal datum epoch.  Will also include datum computation.