Reference : Seasonal Motion in the Annapolis, Maryland GPS Monument
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/741
Seasonal Motion in the Annapolis, Maryland GPS Monument
English
Schenewerk, M. [NOAA]
van Dam, Tonie mailto [NOAA]
Nerem, Steven R. [Center for Space Research, University of Texas at Austin, US]
1999
GPS Solutions
Publisher Springer Berlin / Heidelberg
2
3
41-49
Yes (verified by ORBilu)
International
1080-5370
1521-1886
[en] GPS ; Monument motion
[en] The permanent GPS tracking site at Annapolis, MD shows a 7-mm seasonal signal primarily in its horizontal position. It is suggested that thermal expansion of the pier on which the antenna rests is the source of this motion. A simple numerical model of the pier reproduces the observed motion of the GPS antenna, lending credence to this hypothesis. Although adding an additional level of complexity, this motion is predictable and the site retains it s value for high precision monitoring. Although the arrangement of this GPS site it somewhat uncommon, these results emphasize the importance of the underlying antenna monumentation when measuring crustal motions.
Researchers
http://hdl.handle.net/10993/741
10.1007/PL00012756

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