National Geodetic Survey, U.S. National Oceanic and Atmospheric Administration
www.naref.org Operating on a informal basis since 1997, the Sub-Commission for North America was formally created in 1999, immediately following the IUGG General Meeting in Birmingham, U.K. The purpose of the Sub-Commission is to provide international focus and cooperation for issues involving the h...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.579.3204 http://www.naref.org/naref/naref_iag2001report.pdf |
| Summary: | www.naref.org Operating on a informal basis since 1997, the Sub-Commission for North America was formally created in 1999, immediately following the IUGG General Meeting in Birmingham, U.K. The purpose of the Sub-Commission is to provide international focus and cooperation for issues involving the horizontal, vertical, and three-dimensional geodetic control networks of North America, including Central America, the Caribbean and Greenland (Denmark). Some of these issues include: • Densification of the ITRF reference frame network in North America (the North American Reference Frame) and promotion of its use. • Maintenance and future evolution of vertical datums (ellipsoidal and orthometric), including NAVD88 and the International Great Lakes Datum. • Collocation of different measurement techniques such as VLBI, SLR, DORIS, GPS, etc. • Effects of crustal motion, including tectonic motions along, e.g., the western coast of N.A. and in the Caribbean, and post-glacial rebound. • Standards for the accuracy of geodetic positions. • Outreach to the general public through focused symposia, articles, workshops and lectures and technology transfer to other groups, particularly in N.A. The membership of the Sub-Commission presently consists of: |
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