Journal cover Journal topic
Solid Earth An interactive open-access journal of the European Geosciences Union

Journal metrics

  • IF value: 3.495 IF 3.495
  • IF 5-year<br/> value: 3.386 IF 5-year
    3.386
  • CiteScore<br/> value: 3.70 CiteScore
    3.70
  • SNIP value: 0.783 SNIP 0.783
  • SJR value: 1.039 SJR 1.039
  • IPP value: 1.987 IPP 1.987
  • h5-index value: 20 h5-index 20
https://doi.org/10.5194/se-2018-8
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
07 Feb 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Solid Earth (SE).
The long-term GIA signal at present-day in Scandinavia, northern Europe and the British Isles estimated from GPS and GRACE data
Karen M. Simon1, Riccardo E. M. Riva1, Marcel Kleinherenbrink1, and Thomas Frederikse1,2 1Delft University of Technology, Department of Geoscience and Remote Sensing, Stevinweg 1, 2628 CN Delft, the Netherlands
2Utrecht University, Institute for Marine and Atmospheric Research, Princetonplein 5, 3584 CC Utrecht, the Netherlands
Abstract. The long-term glacial isostatic adjustment (GIA) signal at present-day is constrained via joint inversion of GPS vertical land motion rates and GRACE gravity data for a region encompassing Scandinavia, northern Europe and the British Isles, and the Barents Sea. The best-fit model for the vertical motion signal has a χ2 value of approximately 1 and a maximum posterior uncertainty of 0.3–0.4 mm/yr. An elastic correction is applied to the vertical land motion rates that accounts for present-day changes to terrestrial hydrology as well as recent mass changes of ice sheets and glaciered regions. Throughout the study area, mass losses from Greenland dominate the elastic vertical signal and combine to give an elastic correction of up to +0.5 mm/yr in central Scandinavia. Neglecting to use an elastic correction may thus introduce a small but persistent bias in model predictions of GIA vertical motion even in central Scandinavia where vertical motion is dominated by long-term GIA. The predicted gravity signal is generally less well-constrained than the vertical signal, in part due to uncertainties associated with the correction for contemporary ice mass loss in Svalbard and the Russian Arctic. The GRACE-derived gravity trend is corrected for present-day ice mass loss using estimates derived from the ICESat and CryoSat missions, although a difference in magnitude between GRACE-inferred and altimetry-inferred regional mass loss rates suggests the possibility of a non-negligible GIA response here either from millennial-scale or Little Ice Age GIA.
Citation: Simon, K. M., Riva, R. E. M., Kleinherenbrink, M., and Frederikse, T.: The long-term GIA signal at present-day in Scandinavia, northern Europe and the British Isles estimated from GPS and GRACE data, Solid Earth Discuss., https://doi.org/10.5194/se-2018-8, in review, 2018.
Karen M. Simon et al.
Karen M. Simon et al.
Karen M. Simon et al.

Viewed

Total article views: 387 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
315 63 9 387 1 7

Views and downloads (calculated since 07 Feb 2018)

Cumulative views and downloads (calculated since 07 Feb 2018)

Viewed (geographical distribution)

Total article views: 392 (including HTML, PDF, and XML)

Thereof 392 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 25 Apr 2018
Publications Copernicus
Download
Short summary
This study constrains the post-glacial rebound signal in Scandinavia and northern Europe via the combined inversion of prior forward model information with GPS-measured vertical land motion data and GRACE gravity data. The best-fit model for vertical motion rates has a χ2 value of approximately 1 and a maximum uncertainty of 0.3–0.4 mm/yr. An advantage of inverse models relative to forward models is their ability to estimate formal uncertainties associated with the post-glacial rebound process.
This study constrains the post-glacial rebound signal in Scandinavia and northern Europe via the...
Share