Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: D'Agostino, N.*
Cheloni, D.*
Mantenuto, S.*
Selvaggi, G.*
Michelini, A.*
Zuliani, D.*
Title: Strain accumulation in the southern Alps (NE Italy) and deformation
Title of journal: Geophysical Research Letters
Series/Report no.: 32(2005)
Publisher: AGU
Issue Date: 14-Oct-2005
DOI: 10.1029/2005GL024266
Keywords: crustal deformation
1976 Friuli earthquakes
Abstract: We use continuous GPS observations to investigate the rate of strain accumulation in the area affected by the 1976 Friuli earthquakes. Comparison between the motion predicted by the rigid-rotation of Adria and the shortening observed across the study area suggests that the 2.0 ± 0.2 mm/yr motion of Adria is entirely absorbed in the southern Alps through thrusting and crustal thickening with very little or no motion transferred to the north.We use elastic dislocation modelling to investigate the rate of interseismic loading and the geometry of the shear zone at depth. The best-fit solution indicates that a northward-dipping creeping dislocation, whose edge is located within a 50 km wide area beneath the southern Alps, accomodates 2.1 ± 0.5 mm/yr of the Adria motion. Limited resolution on locking depth (acceptable values between 0 and 25 km) and trade-off between dip and slip do not allow a precise reconstruction of the dislocation geometry. The range of acceptable model parameters is consistent with a 20 -dipping dislocation, locked above 10 km depth and slipping at 2.4 mm/yr, whose geometry is suggested by seismological informations.
Appears in Collections:Manuscripts
04.03.01. Crustal deformations
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
2005GL024266.pdf348.95 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA