球体位错理论计算程序的总体设计与具体实现

本文详细介绍了球体位错理论计算程序的总体设计思想、 各类配套文件的具体内涵以及各类输出文件的物理含义, 同时介绍了程序的使用方法和注意事项, 为读者独立使用该程序提供参考。 球体位错理论计算程序主要由三部分组成: ① 位错格林函数计算程序, 基于具体的球对称地球模型提供离散的二维格林函数数值框架; ② 积分计算程序, 对离散的格林函数数值框架进行双二次样条插值运算, 并对四类独立位错源对应的格林函数进行适当组合, 从而计算出任意位置任意类型震源在地表产生的同震变形(含位移、 应变、 重力变化和大地水准面变化); ③ 辅助文件, 用于提供发震断层模型和计算点位信息。 一般情况下, 读者不需要理解位错格林函数计算程序和积分计算程序, 只需要对辅助文件提供的信息进行针对性改动, 就可以计算目标地震在目标观测站引起的同震变形。

Overall Design and Specific Structures of the Computing Codes for Coseismic Deformations on a Layered Spherical Earth

We present a detailed introduction of the computing codes for the coseismic deformations on a layered spherical earth,including overall design of the programs,detailed information of the supporting documents and physical meanings of the output files.At the same time,we also introduce the basic usage of the computing codes,as well as the matters needing attention.Overall,our computing programs are made of three parts: ① Codes for dislocation Green′s functions,which present two-dimension discrete numerical frame of Green′s functions based on a specific symmetric earth model;② Codes for integration,which perform bi-quadratic spline interpolation operations with the frame of Green′s functions.A suitable combination of four independent dislocations is given to compute the coseismic deformations including displacements,strain,geoid and gravity changes resulting from an arbitrary seismic source at an arbitrary position;③ Supporting documents,which present the information of earthquake′s fault model and observation points.Even without grasping the theories and codes,the readers can also correctly calculate the coseismic deformations caused by an arbitrary earthquake,by suitable changing the information of the supporting documents.Because of this reason the computing codes are easy to be generalized.