论文部分内容阅读
利用欧洲航天局最新发射的宽刈幅、高分辨率Sentinel-1A卫星,第一时间获取2016-02-06台湾美浓MW6.4地震干涉像对,使用D-InSAR技术获取美浓地区的同震形变场。利用震中附近39个同震GPS观测进行对比验证后显示,InSAR获取的同震形变场精度优于1cm(3σ)。形变发生在宏观震中30km×30km范围内,主要表现为沿雷达视线向抬升,最大抬升约12cm。从形变场空间分布特征可以看出,空间连续性较好,说明宏观震中附近地表未发生明显破裂。宏观震中并不与震中位置重合,而是位于震中西部约15km处。
Using the newly launched wide-swath, high-resolution Sentinel-1A satellite launched by the European Space Agency, the first time to acquire 2016-02-06 Taiwan’s Mino MW6.4 earthquake interferometric image pairs, the use of D-InSAR technology to obtain the same Vibration deformation field. The comparison of 39 coseismic GPS observations near the epicenter shows that the coseismic deformation field obtained by InSAR is better than 1 cm (3σ). Deformation occurred in the macro epicenter 30km × 30km range, mainly manifested as radar uplift along the line of sight, the maximum lift of about 12cm. It can be seen from the spatial distribution of the deformation field that the spatial continuity is good, indicating that no obvious rupture occurred in the surface near the epicenter. The macro epicenter does not coincide with the location of the epicenter but lies about 15 km west of the epicenter.