利用2000年7月-2017年6月地震资料，计算张渤地震构造带中西段地震活动性参数b值、a值和a/b值。基于沿断裂带的b值空间分布，结合多地震活动参数值组合、历史强震背景分布特点，分析张渤地震构造带中西段不同段落的强震危险性。研究结果表明，河北涿鹿及山西大同一带具有低b值、低a值、较高a/b值的参数组合，反映该区域具有高应力积累，未来具有强震发生的危险。
In this paper, using seismic data from July 2000 to June 2017, the b value, a value and a/b value of the west segment of Zhangjiakou-Bohai seismic tectonic belt are calculated. Based on spatial distribution of b values along fault zones, we analyzed strong earthquake risk on the different sections of western part of Zhangjiakou-Bohai seismic tectonic zones, combining the multi-seismic activity parameter values and distribution characteristics on historical strong earthquake background. The results show that the parameter combination characteristics of low b, low a and high a/b values are found in the Zhuolu area of Hebei Province and the Datong area of Shanxi Province, the characteristics reflect the high stress accumulation and the risk of happening strong earthquakes in the areas.
2018,39(4): 51-57 收稿日期：2017-03-20
DOI：10.3969/j.issn.1003-3246.2018.04.008
基金项目：河北省地震局科技星火计划（项目编号：DZ201603300011）
作者简介：张双凤(1971-),女,主要从事地震监测工作。E-mail:z-sf99@163.com
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