3-D GPS velocity field and its implications on the present-day post-orogenic
deformation of the Western Alps and Pyrenees

Nguyen, Hai Ninh; Vernant, Philippe; Mazzotti, Stephane; Khazaradze, Giorgi; Asensio, Eva

doi:https://doi.org/10.5194/se-7-1349-2016

Articles | Volume 7, issue 5

https://doi.org/10.5194/se-7-1349-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/se-7-1349-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 7, issue 5

Research article

|

21 Sep 2016

Research article |

| 21 Sep 2016

3-D GPS velocity field and its implications on the present-day post-orogenic deformation of the Western Alps and Pyrenees

Hai Ninh Nguyen, Philippe Vernant, Stephane Mazzotti, Giorgi Khazaradze, and Eva Asensio

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Final revised paper (published on 21 Sep 2016)
Preprint (discussion started on 22 Jun 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Report of Referee', Elmar Brockmann, 07 Jul 2016
- AC1: 'reply to reviewer #1', Philippe Vernant, 22 Aug 2016
RC2: 'Review of “3D GPS velocity field and its implications on the present-day post- orogenic deformation of the Western Alps and Pyrenees”.', Anonymous Referee #2, 20 Jul 2016
- AC2: 'reply to reviewer #2', Philippe Vernant, 22 Aug 2016
RC3: 'Review', Anonymous Referee #3, 20 Jul 2016
- AC3: 'reply to reviewer #3', Philippe Vernant, 22 Aug 2016

Short summary

We present a new 3-D GPS velocity solution for 182 sites for the region encompassing the Western Alps, Pyrenees. The only significant horizontal deformation (0.2 mm/yr over a distance of 50 km) is a NNE–SSW extension in the western Pyrenees. In contrast, significant uplift rates up to 2 mm/yr occur in the Western Alps but not in the Pyrenees. A correlation between site elevations and fast uplift rates in the Western Alps suggests that part of this uplift is induced by postglacial rebound.