Study of the Precursor Aspects of Earthquakes Suing InSAR Case Study LAquila Earthquake
In this work,we are trying to assess the feasibility of the detection of small deformation of the crust,just few weeks before an earthquake using InSAR.The SAR data made available by the European Space Agency(ESA)after the LAquila earthquake(06 April 2009)Mw 6.3,was used for this purpose.Two tracks 079(descending),401(ascending)of Envisat satellite were used.An anomaly in the topography was revealed in the interferograms generated for the period of one month before the earthquake.This anomaly quantified as half fringe = 1.4 cm in both ascending and descending couples.This anomaly was not present in the previous interferograms.The change in the instability of the ionosphere few days before the earthquake,leaded to a big difference in the value of the TEC between the acquisitions,and integrated a delay in the SAR signal.
Kamel Hasni Jie Chen Nabil Hamdadou
School of Electronics and Information Engineering,Beihang University,Beijing 100191,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
2758-2760
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）