Combination of Precise Leveling and InSAR Data to Constrain Source Parameters of the Mw = 6.5, 26 December 2003 Bam Earthquake - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Pure and Applied Geophysics Année : 2006

Combination of Precise Leveling and InSAR Data to Constrain Source Parameters of the Mw = 6.5, 26 December 2003 Bam Earthquake

Résumé

We used new precise leveling data acquired 40 days after the Bam earthquake in combination with radar interferometry observations from both ascending and descending orbits to investigate static deformation associated with the 2003 Bam earthquake. We invert this geodetic data set to gain insight into the fault geometry and slip distribution of the rupture. The best-fitting dislocation model is a steeply east-dipping right-lateral strike-slip fault that has a size of 11 by 8 km and strikes N2°W. We find that such smooth geometry fits available geodetic data better than previously proposed models for this earthquake. Our distributed slip model indicates a maximum strike slip of 3 m occurring about 3 to 5 km deep. The slip magnitude and depth of faulting taper to the north, where the fault approaches the Bam city. Inclusion of crustal layering increases the amount of maximum slip inferred at depth by about 4%.

Mots clés

Dates et versions

insu-00269135 , version 1 (02-04-2008)

Identifiants

Citer

Mahdi Motagh, Jürgen Klotz, Farokh Tavakoli, Yahya Djamour, Siavash Arabi, et al.. Combination of Precise Leveling and InSAR Data to Constrain Source Parameters of the Mw = 6.5, 26 December 2003 Bam Earthquake. Pure and Applied Geophysics, 2006, 163 (1), pp.1-18. ⟨10.1007/s00024-005-0005-y⟩. ⟨insu-00269135⟩
98 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More