InSAR-MAI技术监测玉树地震2-D同震形变场研究

摘要

Multiple Aperture Interferometry (MAI) as a kind of promising technique has been widely used to monitor azimuth direction deformation ,with centimeter levels precision .MAI is very effective especially for monitoring fast and large deformation ,such as glacier velocity ,coseismic deformation ,etc .In this paper , the 2‐D coseismic deformation field of Yushu earthquake Mw 6.9 on April 14 ,2010 was retrieved by InSAR‐MAI techniques based on ALOS/PALSAR data .%InSAR由于大范围、高精度、全天候等优势，被广泛应用。但InSAR局限于监测视线向形变，无法观测方位向形变。多孔径干涉测量技术（M AI）作为一种监测方位向形变的有效技术得到广泛应用，其精度可达厘米级。该技术对监测快速，激烈的地表形变更为有效，如冰川流速、同震形变等。文中利用 M AI‐InSAR技术，选用日本ALOS卫星PALSAR数据，监测玉树Mw＝6.9地震的2‐D同震形变场，获得有益的结论。