摘要
依据内蒙古地震台网2009年—2014年4月地震观测报告,获得华南模型定位走时残差,认为华南模型与内蒙古地区地质构造存在一定差异,需要修订、完善。依据地震和爆破震相的线性拟合和折合走时曲线,采用"离散度调整、深度调整和速度值调整"的方法,结合前人研究成果得到初始模型。搜索59次地震Hyposat批处理定位结果,确定最优模型为:v1=6.10 km/s,vPb=6.60 km/s,vn=8.05 km/s;H1=24 km,H2=17 km。对最优模型检验结果显示,华南模型(编目)定位残差均值明显高于最优模型,"最优模型-编目"较"华南模型-编目"震中差均值降低1 km,表明最优模型较华南模型更符合内蒙古地区地质构造特征。
According to the seismic network earthquake observation report of Inner Mongolia from 2009 to April 2014 and the location residual of South China model,we found that there is certain difference between South China model and the Inner Mongolia region geological structure and the model need to be revised. On the basis of earthquake and blasting vibration of linear iftting and reduced travel time curve,using adjustment method of discrete degree,depth and speed,combining previous research results for the initial model,the optimal model for：v1= 6.10 km/s,vPb = 6.60 km/s,vn = 8.05 km/s is get by Hyposat searching of 59 events. Results show that positioning residual of the model of South China （catalog） is signiifcantly higher than that of the optimal model. The mean epicenter differential of optimal-catalog is 1 km lower than the South China-catalog mean,which shows that the optimal model conforms to the Inner Mongolia region geological structure features.
出处
《地震地磁观测与研究》
2016年第2期26-34,共9页
Seismological and Geomagnetic Observation and Research
基金
内蒙古自治区社会发展领域科技计划项目(20130437)
中国地震局地震科技星火项目(XH15008)
中国地震局监测司专项(震源深度核实复测及全国优势深度分布图产出)
中国地震局地震科技星火项目(XH14012Y)联合资助
关键词
地壳速度模型
华南模型
最优模型
crustal velocity model
South China model
optimal model
