论文部分内容阅读
It has always been a difficult problem to extract horizontal and vertical displacement components from the InSAR LOS (Line of Sight) displacement since the advent of monitoring ground surface deformation with InSAR tech-nique. Having tried to fit the firsthand field investigation data with a least squares model and obtained a prelimi-nary result, this paper, based on the previous field data and the InSAR data, presents a linear cubic interpolation model which well fits the feature of earthquake fracture zone. This model inherits the precision of investigation data; moreover make use of some advantages of the InSAR technique, such as quasi-real time observation, con-tinuous recording and all-weather measurement. Accordingly, by means of the model this paper presents a method to decompose the InSAR slant range co-seismic displacement (i.e. LOS change) into horizontal and vertical dis-placement components. Approaching the real motion step by step, finally a serial of curves representing the co-seismic horizontal and vertical displacement component along the main earthquake fracture zone are approximately obtained.
It has always been a difficult problem to extract horizontal and vertical displacement components from the InSAR LOS (Line of Sight) displacement since the advent of monitoring ground surface deformation with InSAR tech-nique. Having tried to fit the firsthand field investigation data with a least squares model and obtained a prelimi-nary result, this paper, based on the previous field data and the InSAR data, presents a prelimi-nary result, this paper, based on the previous field data and the InSAR data, presents a prelimi-nary result, this paper make use of some advantages of the InSAR technique, such as quasi-real time observation, con-tinuous recording and all-weather measurement. (ie LOS change) into horizontal and vertical dis-placement components. Approaching the real motion step by step, finally a serial of curves representing t he co-seismic horizontal and vertical displacement component along the main earthquake fracture zone are approximate.