摘要
论述了地震定位系统中所涉及的台站记录震相数据的筛选、地壳速度结构及遗传算法初始化参数的选择等技术改进思路,结合山东数字化虚拟测震台网的实际记录,研究了不同的速度结构和不同的定位方法对定位精度的影响。结果表明,选择遗传算法和华南速度模型,并合理选择震相数据,可保证利用较少的台站数据以较快的速度给出较高定位精度的地震基本参数。
We discuss the improvement ideas of earthquake location system which include screening of phase data re- corded at stations, crustal velocity structure and initialization parameters selection of genetic algorithm, etc.. Combined with the actual recordings of Digital Virtual Seismometry Network in Shandong, we study the influ- ence of different velocity structure models and various location methods on the earthquake location precision. The results show that combined with selecting reasonably phase data, based on velocity model in South China, we could rapidly get the higher precision earthquake basic parameters with data recorded by less station using genetic algorithm.
出处
《地震研究》
CSCD
北大核心
2012年第4期522-528,597,共7页
Journal of Seismological Research
基金
国家科技支撑计划课题(2012BAK19B04)
中国地震局地震科技星火计划攻关项目(XH12029)联合资助
关键词
遗传算法
速度结构
初始化参数
地震自动定位
genetic algorithm
velocity structure
initial parameter
earthquake automatic location
