地震地磁观测与研究2026，Vol.47Issue(3)：28-35,8.DOI:10.3969/j.issn.1003-3246.2026.03.004
内蒙古地震重点预警区Q值与场地响应特征分析
Analysis of Q-values and site response characteristics in key earthquake early warning areas of the Nei Mongol
摘要
Abstract
Based on seismic records from the Nei Mongol's early warning station network from December 2022 to July 2025,a regional Q-value model was established using the Atkinson method,and site responses at 31 stations(18 upgraded stations and 13 newly built stations)were inverted using the Moya genetic algorithm.The results show that the relationship between Q value and frequency follows a power function,with good fitting performance and high stability.The frequency-dependent formula of regional quality factor Q in the study region is given by:Q(f)=395.2f 0.2058.The site response results show that response values are close to 1 in the low-frequency band(1-2 Hz),whereas frequency-domain characteristics differ markedly among stations in the high-frequency band,with some stations showing attenuation and others amplification.A comparison of newly built borehole stations with surface stations and other station types indicates that the site responses of newly built borehole stations are relatively stable.Site response characteristics are jointly affected by subsurface lithology,geological conditions and observation methods.These results provide a reference for source-parameter inversion and magnitude-bias correction.关键词
Q值/震源谱/遗传算法/场地响应Key words
Q-value/source spectrum/genetic algorithm/site response引用本文复制引用
翟浩,马亮,王勇,徐岩..内蒙古地震重点预警区Q值与场地响应特征分析[J].地震地磁观测与研究,2026,47(3):28-35,8.基金项目
内蒙古自治区地震局局长基金(项目编号:2024QN20) （项目编号:2024QN20）
