Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7100
Authors: | D'Agostino, N.* D'Anastasio, E.* Gervasi, A.* Guerra, I.* Nedimovic, M. R.* Seeber, L.* Steckler, M.* |
Title: | Forearc extension and slow rollback of the Calabrian Arc from GPS measurements | Journal: | Geophysical Research Letters | Series/Report no.: | /38 (2011) | Publisher: | American Geophysical Union | Issue Date: | 2011 | DOI: | 10.1029/2011GL048270 | URL: | http://www.agu.org/journals/gl/gl1117/2011GL048270/ | Keywords: | Calabrian Arc GPS |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | Abstract: | Here we describe the horizontal velocities of continuous GPS stations in the Calabrian Arc (CA) and surrounding regions. The appropriate reference frame to evaluate the crustal motion of the CA is considered by assessing the internal deformation and the relative motion of the crustal blocks in the foreland of the Apennines␣Ionian␣Maghrebides subduction system. We propose that the motion of CA rela- tive to the subducting Ionian lower plate is most properly assessed by minimizing the GPS velocities in Apulia. In this reference frame the significant ␣2 mm/yr southeast- ward motion of the stations on the Ionian flank of the CA shows that the arc is still moving towards the trench in agreement with the observations of active shortening in the Ioanian wedge. This southeastward migration is associated to 1.4 ± 0.3 mm/yr E␣W extension of the forearc in northern Calabria, comparable with the seismic strain averaged in the last 500 years. The limited subaerial exposure decreases the resolution on locking of the subduction interface but the distribution and direction of crustal extension along the CA impose important constraints on geodynamic interpreta- tions of the area. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
dagostino_etal_GRL2011.pdf | Main article | 1.32 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
50
75
checked on Feb 7, 2021
Page view(s) 50
236
checked on Mar 27, 2024
Download(s)
46
checked on Mar 27, 2024