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.

發文機構：Key Laboratory of Earthquake Geodetic Surveying

關鍵詞：震源機制解獨立參數歐拉角研究人員解的表示表示形式方位角地震Focal mechanism solutionIndependenceEuler angels

分類號： P315.3[天文地球—地震學][天文地球—固體地球物理學][天文地球—地球物理學]TP274.5[自動化與計算機技術—控制科學與工程][自動化與計算機技術—檢測技術與自動化裝置]