Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9327
Authors: | Palano, M. | Title: | On the present-day crustal stress, strain-rate fields and mantle anisotropy pattern of Italy | Journal: | Geophysical Journal International | Series/Report no.: | /200(2015) | Publisher: | Wiley-Blackwell | Issue Date: | 1-Feb-2015 | DOI: | 10.1093/gji/ggu451 | URL: | http://gji.oxfordjournals.org/content/200/2/969.full.pdf+html | Keywords: | Plate motions Seismic anisotropy Kinematics of crustal and mantle deformation |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | Abstract: | We present an up-to-date high resolution picture of the ongoing crustal deformation field of Italy, based on an extensive combination of permanent and non-permanent GPS observations carried out since 1994. In addition, we present an updated map of contemporary SHmax orientations computed by a multidisciplinary data set of well-constrained stress indicators, including both published results and novel analyses. The comparison of stress and geodetic strain-rates directions reveals that both patterns are near-parallel over a large part of the investigated area, highlighting that crustal stress and surface deformation are driven by the same mechanism. The comparison of the azimuthal patterns of surface strain and mantle deformation shows a modest correlation on the Alps and a low correlation along the Apennines chain and the Calabro-Peloritan Arc. Along the Apennines chain, this feature suggests the occurrence of significant strain partitioning and crust–mantle mechanical decoupling. Along the Calabro-Peloritan Arc, the apparent low correlation reflects a different mantle–crust mechanism of deformation to the ongoing subduction and rollback of the Ionian slab. In addition, the superposition of regional/local effects related to second-order sources (crustal lateral density changes, strength contrasts), which at regional/local scale modulate the crustal stress/strain-rate pattern, cannot be ruled out. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
2015_Palano [Strain Stress Seismic Anisotropy Italy] GJI.pdf | 24.32 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
46
checked on Feb 10, 2021
Page view(s) 50
176
checked on Apr 17, 2024
Download(s)
49
checked on Apr 17, 2024