利用高阶多项式拟合的方法取代传统的T^2—X^2法进行反射波走时曲线拟舍得到分层地壳中的走时残差,对其应用基于广义反演理论的速度层析成像技术,重建研究区台阵下方的上地壳三维速度结构图像.数值模拟和长白山天池火山三维地震透射速度层析成像都显示了该方法的有效性.
According to the theory of generalized inversion, the travel-time residuals being generated by fitting a highorder polynomial to reflection times, are used for the reconstruction of velocity structure under the seismic array. Both theoretical and field examples demonstrate the efficiency of the method.