地震地磁观测与研究2025，Vol.46Issue(6)：15-24,10.DOI:10.3969/j.issn.1003-3246.2025.06.002
山东最小完整性震级的时空演变及成因
Spatiotemporal evolution and genesis of the minimum magnitude of completeness in Shandong Province
摘要
Abstract
To address the spatiotemporal heterogeneity of the earthquake catalog in Shandong,China,this study establishes a segmented framework based on temporal dimension(seismic network stages)and spatial dimension(tectonic zones).By integrating multiple methods,such as the magnitude-frequency,magnitude-rank,maximum curvature,and b-value stability techniques,we systematically quantified how segmentation strategies affect the estimation of the minimum magnitude of completeness(Mc).Analysis of 34 414 seismic events from 1970 to 2025 shows that multi-dimensional segmentation reduces estimation error of Mc by 30%to 50%.The correlation coefficients between each methods and a composite benchmark all exceeded 70%.Furthermore,the study reveals differential sensitivity of different estimation methods to segmented data,offering a more reliable methodological foundation for regional seismic activity analysis and hazard assessment.关键词
最小完整性震级/地震目录/b值/时空演化/构造分区Key words
minimum magnitude of completeness/earthquake catalog/b-value/spatiotemporal evolution/tectonic zoning引用本文复制引用
李小晗,郑建常,李永红,崔华伟,王杰民,高家乙..山东最小完整性震级的时空演变及成因[J].地震地磁观测与研究,2025,46(6):15-24,10.基金项目
地震监测预报预警工作任务(项目编号:CEA-JCYJ-202501036) （项目编号:CEA-JCYJ-202501036）
