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基于D-InSAR技术的意大利拉奎拉地震同震形变分析
COSEISMIC DEFORMATION ANALYSIS OF L’AQUILA EARTHQUAKE(ITALY) BY USING D-INSAR
【摘要】 基于DORIS软件和欧空局提供的ENVISAT数据,结合美国NASA的高精度SRTM数字高程模型DEM,以二轨差分方法获取了意大利拉奎拉地震同震形变场的差分干涉图。结果表明,该区域在往西南方向上的弧后扩张是此次地震发生的主要驱动力,地震造成了该地区在卫星雷达视线方向上隆起了25.2cm。
【Abstract】 According to the principles of D-InSAR,by using Doris and ENVISAT SAR data,two-pass method of D-InSAR is utilized to acquire coseismic surface deformation images caused by L’Aquila(Italy)earthquake.Preliminary quantitative cognition was completed based on the D-InSAR interferogram.The results show that the main driving force of the earthquake is the southwest wards and up back-arc spreading of the area and the earthquake makes the area uplift 25.2 cm in the sight line direction of SAR.
【关键词】 拉奎拉地震;
合成孔径雷达差分干涉测量(D-InSAR);
二轨法;
地震同震形变场;
定量分析;
【Key words】 L’ Aquila earthquake; Differential Synthetic Aperture Radar Interferometry(D-InSAR); two-pass method; coseismic deformation field; quantitative analysis;
【Key words】 L’ Aquila earthquake; Differential Synthetic Aperture Radar Interferometry(D-InSAR); two-pass method; coseismic deformation field; quantitative analysis;
【基金】 国家自然科学基金(40606002);国家高技术研究发展计划(863计划)(2009AA12Z133)
- 【文献出处】 大地测量与地球动力学 ,Journal of Geodesy and Geodynamics , 编辑部邮箱 ,2010年01期
- 【分类号】P315.725
- 【被引频次】8
- 【下载频次】232