InSAR observations of strain accumulation and fault creep along the Chaman Fault system, Pakistan and Afghanistan

InSAR observations of strain accumulation and fault creep along the Chaman Fault system, Pakistan and Afghanistan

We use 2004–2011 Envisat synthetic aperture radar imagery and InSAR time series methods to estimate the contemporary rates of strain accumulation in the Chaman Fault system in Pakistan and Afghanistan.At29Nwefind long-termslip ratesof16 ± 2.3mm/yr for theGhazabandFault andof8 ± 3.1mm/yr for the Chaman Fault. This makes the Ghazaband Fault one of themost hazardous faults of the plate boundary zo...

Observations and Modeling of Shallow Fault Creep Along the San Andreas Fault System

Localized and distributed creep along the southern San Andreas Fault

We investigate the spatial pattern of surface creep and off-fault deformation along the southern segment of the San Andreas Fault using a combination of multiple interferometric synthetic aperture radar viewing geometries and survey-mode GPS occupations of a dense array crossing the fault. Radar observations from Envisat during the period 2003–2010 were used to separate the pattern of horizonta...

Coulomb stress accumulation along the San Andreas Fault system

Stress accumulation rates along the primary segments of the San Andreas Fault system are computed using a three-dimensional (3-D) elastic half-space model with realistic fault geometry. The model is developed in the Fourier domain by solving for the response of an elastic halfspace due to a point vector body force and analytically integrating the force from a locking depth to infinite depth. Th...

Interseismic deformation and creep along the central section of the North Anatolian Fault (Turkey): InSAR observations and implications for rateandstate friction properties

[1] We present high-resolution measurements of interseismic deformation along the central section of the North Anatolian Fault (NAF) in Turkey using interferometric synthetic aperture radar data from the Advanced Land Observing Satellite and Envisat missions. We generated maps of satellite line-of-sight velocity using five ascending Advanced Land Observing Satellite tracks and one descending En...