Study on three independent parameters of focal mechanism solution

作者：Qi Li,Kai Tan

摘要：In this paper, the relationships of the plunges and azimuths of T and P axes versus the strikes, dips, and rakes of two seismic nodal planes were derived to provide reference for earthquake researchers. The independence of the plunges and azimuths of T, B, and P axes in focal mechanism solution was discussed, and it was concluded that three parameters, i.e., the azimuths of T, B and P axes, are completely independent. The focal mechanism solution representation based on Euler rotation was introduced,using three Euler angles in place of the plunges and azimuths of T, B, and P axes, and three focal mechanism solution representations were briefly compared and analyzed in respect of accuracy on the basis of the assumption of rounding; it was concluded that the Euler angle representation has better accuracy, compared with the azimuth representation and the traditional representation with T, B,and P axes.

发文机构：Key Laboratory of Earthquake Geodetic Surveying

关键词：震源机制解独立参数欧拉角研究人员解的表示表示形式方位角地震Focal mechanism solutionIndependenceEuler angels

分类号： P315.3[天文地球—地震学][天文地球—固体地球物理学][天文地球—地球物理学]TP274.5[自动化与计算机技术—控制科学与工程][自动化与计算机技术—检测技术与自动化装置]