Rates of sea-level change over the past century in a geocentric reference frame

Woeppelmann, G.; Letetrel, C.; Santamaria, A.; Bouin, M. N.; Collilieux, X.; Altamimi, Z.; Williams, S. D. P.; Miguez, B. M.. 2009 Rates of sea-level change over the past century in a geocentric reference frame. Geophysical Research Letters, 36, L12607. 6, pp. 10.1029/2009GL038720

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The results from a carefully implemented GPS analysis, using a strategy adapted to determine accurate vertical station velocities, are presented. The stochastic properties of our globally distributed GPS position time series were inferred, allowing the computation of reliable velocity uncertainties. Most uncertainties were several times smaller than the 1-3 mm/yr global sea level change, and hence the vertical velocities could be applied to correct the long tide gauge records for land motion. The sea level trends obtained in the ITRF2005 reference frame are more consistent than in the ITRF2000 or corrected for Glacial-Isostatic Adjustment (GIA) model predictions, both on the global and the regional scale, leading to a reconciled global rate of geocentric sea level rise of 1.61 +/- 0.19mm/yr over the past century in good agreement with the most recent estimates

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1029/2009GL038720
ISSN: 0094-8276
Additional Keywords: OVERSEAS CO-AUTHORS
NORA Subject Terms: Marine Sciences
Date made live: 17 May 2010 15:33

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