为了精确得到大陆地震震源位置,利用模拟退火法对大陆地震参数进行反演,并对改变算法中相关参数后的反演结果进行分析,表明反演精度受降温速度和收敛阈值的影响较大,初始温度只影响迭代次数,模拟退火法在对模型参数进行全局搜索情况下能获得质量较好的最优解。
Seismic positioning is one of the most classic and basic problems in seismology. Improving the accuracy of seismic positioning has also been one of the important objectives of seismological application and research. In this article, mainly using the method of simulated annealing to continental earthquake parameters inversion, and the numerical simulation test was carried out with Matlab. The parameter setting, convergence function and convergence threshold of the inversion result are analyzed. The results show that the simulated annealing method can obtain the optimal solution with good quality and the model parameters are searched globally.
2018,39(1): 31-35 收稿日期:2017-03-01
DOI:10.3969/j.issn.1003-3246.2018.01.005
作者简介:窦立婷(1990-),女,山西省长治市人,本科,助理工程师,从事地震监测预报工作。E-mail:790652672@qq.com
参考文献:
段红伟,胡劲松. 基于模拟退火算法的实现及应用[J]. 科技信息(学术版),2007,(31):544-546.
罗文行,李德威,汪校锋. 青藏高原板内地震震源深度分布规律及其成因[J]. 中国地质大学学报(地球科学),2008,33(5):618-625.
师学明,王家映. 地球物理资料非线性反演方法讲座(三):模拟退火法[J]. 工程地球物理学报,2007,4(3):165-174.
田玥,陈晓非. 地震定位研究综述[J]. 地球物理学进展,2002,17(1):147-155.
魏文博,叶高峰,金胜. 华北地区P波三维速度结构[J]. 中国地质大学学报(地球科学),2007,32(4):441-452.