2018 Recorded Webinars
Vertical Datum Changes for Floodplain Mapping
Nicole Kinsman, NGS Regional Geodetic Advisor for Alaska and the U.S. Arctic
This webinar provides an introduction to geodetic control in the context of flood mapping, presents case studies that highlight the importance of well-defined heights, and outlines the expected impacts of a modernized vertical datum on flood maps and related products.
56 Min
19.3 MB
Geodesy Fundamentals
Dave Zenk, PE, LS, NGS Northern Plains Regional Geodetic Advisor
This webinar discusses the fundamentals of astronomy, geodesy, geodetic datums, map projections, and GPS. It is intended to serve as a review tool for students and point toward additional sources for more in-depth study.
59 Min
6.3 MB
BETA OPUS-Projects: the Next Generation of OPUS-Projects
Dr. Mark Schenewerk, National Geodetic Survey
BETA OPUS-Projects will be the next generation of the OPUS-Projects online tool. This webinar is not training, but rather, is an overview of BETA OPUS-Projects highlighting the enhancements and steps needed to submit survey data for publication.
62 Min
4.7 MB
GPS on Bench Marks Update
Galen Scott and Kevin Ahlgren, National Geodetic Survey
In early 2018, NGS released a list of priority bench marks where GPS data is needed to improve GEOID18, our next planned hybrid geoid model. NGS has also created a GPS on Bench Marks 2018 web map to help contributors know where we have the data we need and where we still need GPS observations.
In this webinar, you will learn about submissions on priority marks since early this year, what marks to prioritize before the August 31st deadline, and how future GPS on BM efforts will improve transformation tools in 2022.
54 Min
58.8 MB
An Introduction to Geoid Slope Validation Surveys: What they are, and why they matter
Derek van Westrum, National Geodetic Survey
This webinar will include an introduction to gravity, geopotential, and geoid-based height systems, and a description of how these systems are verified with field observations.
57 Min 18.53 MB
Industry Engagement to Modernize the National Spatial Reference System (NSRS)
Dr. Dru Smith, National Geodetic Survey
NGS hosted a National Spatial Reference System (NSRS) Modernization Industry Workshop in May 2018 to engage industry stakeholders in preparing for the NSRS Modernization effort. Join this webinar to learn about the topics discussed and preliminary outcomes from this year’s inaugural Industry Workshop.
46 Min 2.91 MB
Building a State Plane Coordinate System for the Future
Michael Dennis, National Geodetic Survey
NGS has begun defining the State Plane Coordinate System of 2022 (SPCS2022). This webinar builds on the March 8 SPCS2022 webinar by going into more detail about how SPCS2022 will be created, including the role of NGS customers in the process, and changes from how the SPCS was defined in the past.
55 Min 50.2 MB
The State Plane Coordinate System: History, Policy and Future Directions
Michael Dennis, National Geodetic Survey
The State Plane Coordinate System will soon change. A new version (SPCS2022) will replace SPCS 83 as part of the transition to the Terrestrial Reference Frames of 2022. This webinar gives a historical overview and explores changes being considered for building the SPCS of the future.
57 Min 34 MB
GPS on Bench Marks for Better Models and Tools
Galen Scott, National Geodetic Survey
Kevin Ahlgren, National Geodetic Survey
NGS encourages its partners to perform GPS on Bench Marks for National Surveyors Week (March 18–24, 2018). This webinar will discuss recommendations for marks to observe that will help improve GEOID18 (a new hybrid geoid model to replace GEOID12B) and the transformation tools that will be developed with the new datums in 2022.
60 Min 38 MB
Blueprint for 2022, Part 2: Geopotential Coordinates
Dr. Dru Smith, National Geodetic Survey
Learn about the recently released “Blueprint for 2022, Part 2: Geopotential Coordinates” (NOAA Technical Report NOS NGS 64). This document discusses many of the technical and policy decisions regarding the planned replacement of NAVD 88 and other vertical datums in the National Spatial Reference System.
58 Min 5.3 MB
VDATUM
Stephen White, National Geodetic Survey
VDatum is a free NOAA software tool to vertically transform geospatial data among various tidal, orthometric, and ellipsoidal vertical datums, allowing users to convert data from different horizontal/vertical references into a common system. New features and future development efforts will be discussed.
52 Min 67 MB
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