基于人工地震测深数据建立地壳一维速度结构  

Establishment of Crust 1D Velocity Structure Based on Artificial Earthquake Sounding Data

作　　者：蔡辉腾[1,2] 金星[1,2] 王善雄[2] 

机构地区：[1]福州大学土木工程学院,福州市学园路2号350003 [2]福建省地震局,福州市华鸿路7号350003

出　　处：《大地测量与地球动力学》2015年第2期267-272,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41474071);福建省地震局青年科技基金(Y201204);海峡两岸爆破地震联合观测项目

摘　　要：设计适用于人工地震宽角折射/反射测深数据,以走时残差为阈值迭代计算一维速度结构的线性反演流程,并编制相应程序LIAE1D。其特点:1)建立自适应的初始模型;2)运用广义逆矩阵法求解线性方程。该方法和程序可行有效,其结果可为后续二维反演提供较为优化的初始模型。Sounding data are first designed to be applicable to wide-angle refraction/reflection,and the 1D velocity structure linear inversion of iterative calculation is conducted by using travel time residual as the threshold.Then LIAE 1D is programmed accordingly with the following characteristics：1） the establishment of an adaptive preliminary model;2）the solution of the linear equation by means of a broader inverse moment matrix.The method and program are later proved to be feasible and efficient in numerical simulation tests as well as in the application of the Huian-Datian-Ninghua profile of Fujian artificial earthquake sounding wide-angle refraction/reflection.Thus,these results could provide a suitable preliminary model for future 2D inversion.

关 键 词：人工地震测深 一维速度结构 线性反演 走时残差 

分 类 号：P315.8[天文地球—地震学]