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Monitoring changes in mean‐sea‐level to millimeters using GPS
Author(s) -
Ashkenazi V.,
Bingley R. M.,
Whitmore G. M.,
Baker T. F.
Publication year - 1993
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/93gl01591
Subject(s) - geodetic datum , geodesy , tide gauge , global positioning system , fiducial marker , reference frame , geology , remote sensing , limiting , sea level , frame (networking) , computer science , oceanography , telecommunications , artificial intelligence , engineering , mechanical engineering
The fiducial GPS technique is now well established in geodesy and geophysics, for determining horizontal and vertical land movements. In particular, the technique is used in crustal dynamics and in monitoring changes in mean‐sea‐level. The main limiting factor to achieving accuracies of a few millimeters is the reference frame (or datum), as defined by the adopted coordinates of the fiducial stations. This paper summarises a series of tests which have been carried out to assess the quality of alternative global reference frameworks, in order to achieve the highest accuracies for tide gauge heights in the UK.