Estimation of Source Parameters of 2003 Bam (iran) Earthquake from Envisat Sar Images Using Genetic Algorithm Technique
نویسندگان
چکیده
In this paper, we analyze synthetic aperture radar (SAR) interferograms derived from Envisat radar data. Use of interferograms from both ascending and descending satellite passes enables us to indicate regions of surface and near-surface slip which is used to modeling procedure. Also we used azimuth offset (AZO) data as additional data. This is horizontal displacement information for earthquake that is obtained with sub pixel matching of SAR amplitude images. Combining the interferometry with subpixel matching of the SAR amplitude images allows us to obtain the full three-dimensional displacement field for the earthquake. We inverted this field to gain insight into the fault geometry and slip distribution of the rupture. Our results indicate that the best fitting dislocation model is a steeply strike-slip fault with maximum of ~3 m that has a size of 12.3 by 8.3 km and strike 355 ̊ from north.
منابع مشابه
Estimation of Earthquake Damage Through Radar Interferometry (Case study: Bam 2003 Earthquake)
The estimate of the damage caused by the earthquake and other natural disasters in the first days after the occurrence of these events can provide a quick damages assessment and help to manage the crisis. Several methods are available to investigate the extent of earthquake’s damage. Optical remote sensing, photogrammetric methods (UAVs and LIDARs), radar interferometry (InSAR) and field observ...
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