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sonnet et ah,
le earthquake
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te earthquake
location, fault geometry, and rupture dynamics (Figures la and interseismic strain accumulation, which is crucial to
lb). Multiple-temporal InSAR images can be used to estimate understanding continental deformation, the earthquake cycle,
o
O
-15 -10 -5 0 5 10 15
LOS Displacement (over 3.55 years)
Figure 1. (a) Radarsat-1 InSAR image (August 16-October 27, 2002) showing ground surface deformation associated with the
October 23, 2002, Nenana earthquake along the Denali Fault, Alaska (Lu et al., 2003b). (b) A modeled InSAR image using fault
parameters that best fit the observed interferogram (Lu et al., 2003b). (c) Preliminary map of the ground response to the 2002 Denali
Fault earthquake during 2003-2004 (Biggs et al., 2006). The image is a stack of four Radarsat-1 interferograms. Peak deformation is
at a distance of ~60 km from the fault and is consistent with GPS models of viscoelastic relaxation below 60-km depth.
