基于差分干涉与GPS测量的夏威夷基拉韦厄火山形变监测

利用欧空局ENVISAT-ASAR影像数据，提取夏威夷基拉韦厄火山区域由2007-06-17～19小规模火山喷发引起的地表形变场，并结合GPS时间序列分析喷发前后形变特征。结果表明，此次小规模喷发造成Makaopuhi火山口附近发生明显地表形变，LOS向形变值最大超过30 cm。将研究区内同期GPS观测值投影至LOS方向，其结果与差分干涉所得形变量具有较高的一致性，均方根误差为1.8 cm。

Monitoring Surface Deformation of Kilauea Volcano,Hawaii,Based on DInSAR and GPS Measurements

This paper is to acquire the surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the east rift zone of Kilauea volcano, Hawaii. The InSAR technique is applied to monitor and analyze the volcano’s deformation, with verification from the synchronized GPS data. Significant surface deformation is observed around Makaopuhi, where maximum 30 cm displacements in LOS occurred. The acquired deformation shows a good consistency with the GPS observations, and the RMSE between DInSAR and GPS is 1.8 cm in LOS direction.