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Article Dans Une Revue Geophysical Research Letters Année : 2009

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

Guy Woppelmann
Marie-Noëlle Bouin
  • Fonction : Auteur
Xavier Collilieux
Zuheir Altamimi
  • Fonction : Auteur
S. D. P. Williams
  • Fonction : Auteur
Belen Martin-Miguez
  • Fonction : Auteur

Résumé

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.
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Dates et versions

hal-01248165 , version 1 (19-08-2022)

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Guy Woppelmann, Camille Letetrel, Alvaro Santamaria-Gomez, Marie-Noëlle Bouin, Xavier Collilieux, et al.. Rates of sea-level change over the past century in a geocentric reference frame. Geophysical Research Letters, 2009, 36, pp.L12607. ⟨10.1029/2008GL03872⟩. ⟨hal-01248165⟩

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