G41A:
Modernizing Regional Reference Frames and Vertical Datums for North America II


Submit an Abstract to this Session


Session ID#: 57966

Session Description:
In 2022 the existing non-geocentric reference frames of North America will be succeeded by a set of modern ones using the latest realization of ITRF that is fixed separately to the North American, Caribbean, Marianas and Pacific tectonic plates. In addition, all leveling-based vertical datums will be replaced with a geoid-based datum incorporating continental airborne gravity and new global geopotential model. Contributions are invited that address the development, implementation and maintenance of such regional reference frames, including: defining a geocentric reference system fixed to a moving and deforming continent, defining a geoid-based vertical datum, implementing time dependencies including geoid change, creating accurate transformations, defining the role of private Real-Time Networks, determining dynamic heights, building geospatial databases capable of handling historic static data along with modern time-dependent data, and collaborations with neighboring countries to ensure compatible and seamless reference systems across the continent.
Primary Convener:  Dru A Smith, NOAA Natl Geodetic Survey, Silver Spring, United States
Conveners:  Daniel R Roman, National Geodetic Survey, HQ, Silver Spring, United States, Michael Craymer, Canadian Geodetic Survey, Natural Resources Canada, Ottawa, ON, Canada and John W Crowley, Natural Resources Canada, Ottawa, Canada
Primary Liaison:  Dru A Smith, NOAA Natl Geodetic Survey, Silver Spring, United States
Chairs:  Dru A Smith, NOAA Natl Geodetic Survey, Silver Spring, United States and Michael Craymer, Canadian Geodetic Survey, Natural Resources Canada, Ottawa, ON, Canada
OSPA Liaison:  John W Crowley, Natural Resources Canada, Ottawa, Canada
Index Terms:

1204 Control surveys [GEODESY AND GRAVITY]
1214 Geopotential theory and determination [GEODESY AND GRAVITY]
1217 Time variable gravity [GEODESY AND GRAVITY]
1229 Reference systems [GEODESY AND GRAVITY]

Abstracts Submitted to this Session:

Strategies for promoting the consistency and usability of geometrical reference frames (Invited) (413508)
Michael G Bevis1, Abel Brown2, Demián Gómez3, Eric C Kendrick1, Dana J Caccamise II4 and Cristian Iturriaga Saez5, (1)The Ohio State University, School of Earth Sciences, Columbus, United States, (2)Ohio State University Main Campus, SES, Columbus, OH, United States, (3)Instituto Geográfico Nacional, Dirección de Geodesia, Buenes Aires, Argentina, (4)NOAA National Geodetic Survey, Silver Spring, MD, United States, (5)Ohio State University, Division of Geodetic Sciences, Columbus, OH, United States
Estimation of North America Plate Rotation in the Presence of Intraplate Deformation (Invited) (450185)
Corne Kreemer, Nevada Bureau of Mines and Geology, University of Nevada - Reno, Reno, NV, United States, Geoffrey Blewitt, Nevada Geodetic Laboratory, Nevada Bureau of Mines and Geology, University of Nevada - Reno, Reno, NV, United States and William C Hammond, Nevada Geodetic Laboratory, Nevada Bureau of Mines and Geology, University of Nevada - Reno, Reno, United States
Glacial Isostatic Adjustment, Intraplate Deformation, and Relative Sea Level Changes in the Eastern US (433079)
Jeffrey Todd Freymueller, Michigan State University, East Lansing, MI, United States and Kaihua Ding, China University of Geosciences Wuhan, Wuhan, China
Dynamic Reference Frames for California (411777)
Yehuda Bock, Scripps Institution of Oceanography, University of California San Diego, Institute of Geophysics and Planetary Physics, La Jolla, United States and Emilie Klein, Scripps Institution of Oceanography, Institute of Geophysics and Planetary Physics, La Jolla, CA, United States
The Experimental Geoid 2018 Computation at NGS (397969)
Yan Ming Wang, NOAA Camp Springs, Camp Springs, MD, United States, Xiaopeng Li, DST at NGS, Geosciences Research Division, Silver Spring, United States, Kevin Ahlgren, National Geodetic Survey, NOAA, Silver Spring, United States and Jordan Alexander Krcmaric, NOAA/NOS/NGS, Silver Spring, MD, United States
Recent Advancements for NOAA’s Time-Dependent Geoid Undulation Model and Geoid Monitoring Service (GeMS) (406805)
Kevin Ahlgren, National Geodetic Survey, NOAA, Silver Spring, United States, Theresa Damiani, NOAA- Nat-l Geodetic Survey, Silver Spring, MD, United States, Jordan Alexander Krcmaric, NOAA/NOS/NGS, Silver Spring, MD, United States, Derek van Westrum, NOAA National Geodetic Survey, Boulder, United States, Daniel Winester, National Geodetic Survey, Silver Spring, MD, United States and Jeff Kanney, NOAA National Geodetic Survey, Boulder, CO, United States
Leveling in a Modern Vertical Datum Realized by GNSS and a Gravimetric Geoid Model (393614)
Daniel Gillins, NOAA National Geodetic Survey, SRSD, Silver Spring, United States, Jacob M Heck, NOAA National Geodetic Survey, Silver Spring, MD, United States, Dru A Smith, NOAA Natl Geodetic Survey, Silver Spring, United States and Kyle B Snow, Topcon Positioning Systems, Columbus, OH, United States
Updating the International Great Lakes Datum (435156)
Michael Craymer, Natural Resources Canada, Canadian Geodetic Survey, Ottawa, ON, Canada, Jeff Oyler, NOAA Center for Operational Oceanographic Products and Services, Chesapeake, VA, United States, Terese Herron, Canadian Hydrographic Service, Fisheries and Oceans Canada, Burlington, ON, Canada and Great Lakes Vertical Control - Water Levels Subcommittee

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