Deformation in the Jura Mountains (France): First results from semi-permanent GPS measurements - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Earth and Planetary Science Letters Year : 2006

Deformation in the Jura Mountains (France): First results from semi-permanent GPS measurements

Abstract

New GPS estimates of relative motion across the Jura Mountain Belt with respect to the Eurasian Plate indicate less than 1 mm/yr of convergence, considerably less than previous estimates. Velocity uncertainties have been evaluated by several methods and range from 0.2 to 0.5 mm/yr for the semi-permanent stations. The major, statistically-significant strain feature inferred by the Jura GPS measurements is along-arc extension, compatible with tectonic studies. That the detected deformation is small in magnitude highlights two important issues: previous estimates are over-stated and that the approach of using semi-permanent GPS installations is capable of detecting small tectonic signals. Using the upper bound as the rate of convergence, we estimate that this would generate an earthquake of magnitude 5–5.5 every 15 to 75 yr.

Dates and versions

insu-00270314 , version 1 (04-04-2008)

Identifiers

Cite

Andrea Walpersdorf, Stéphane Baize, E. Calais, Paul Tregoning, Jean-Mathieu Nocquet. Deformation in the Jura Mountains (France): First results from semi-permanent GPS measurements. Earth and Planetary Science Letters, 2006, 245 (1-2), pp.365-372. ⟨10.1016/j.epsl.2006.02.037⟩. ⟨insu-00270314⟩
180 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More