Publication Date:
2017-04-04
Description:
Descending and ascending track satellite images of the new European C-band Envisat Advanced Synthetic Aperture Radar have
been used to detect the surface displacement field during the 26 December 2003, Mw 6.5, Bam earthquake in southeastern Iran and
to determine the fault parameters. In this work, displacement field maps have been realized from interferograms for both tracks. The
surface displacement pattern from InSAR revealed that slip occurred along an unknown fault. Based on modelling (Okada, 1985),
fault parameters with variable slip distribution (geometric and kinematic) have been considered to better reproduce the InSAR
pattern. These parameters have been also constrained by the available seismological data. The modelled interferogram versus the
unwrapped interferogram shows low residual values for a fault 18 km long, 12 km wide and with a top of the fault plane at 0.5 km
from the surface. The best fitting strike, dip and rake are 177◦, 88◦ and 166◦, respectively.
Description:
Published
Description:
347-353
Description:
reserved
Keywords:
Bam earthquake
;
Iran
;
InSAR
;
Fault modelling
;
Envisat satellite
;
04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Format:
728071 bytes
Format:
application/pdf
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