地球物理学进展 ›› 2019, Vol. 34 ›› Issue (3): 961-968.doi: 10.6038/pg2019AA0624

• 固体地球物理及空间物理学(大气、行星、地球动力学、重磁电及地震学、地热学) • 上一篇    下一篇

京津冀地区的地震活动性研究

谢卓娟1,2,吕悦军1,方怡1,张愉玲3   

  1. 1. 中国地震局地壳应力研究所,北京 100085
    2. 中国地震局工程力学研究所,地震工程与工程振动重点实验室,哈尔滨 150080
    3. 中国海洋大学海洋地球科学学院,山东青岛 266100
  • 收稿日期:2018-06-09 修回日期:2019-03-02 出版日期:2019-06-20 发布日期:2019-07-09
  • 作者简介:谢卓娟,女,1984年生,贵州六盘水市人,中国地震局地壳应力研究所副研究员,主要从事地震活动性、地震危险性分析等方面的工作和研究.(E-mail: xiezhuojuan@sohu.com)
  • 基金资助:
    国家重点研发计划“海域地震区划关键技术研究”课题二“海域地震活动性模型及其评价方法研究”(2017YFC1500402);北京市自然科学基金(8164065)

Research on the seismic activity of the Beijing-Tianjin-Hebei region

XIE Zhuo-juan1,2,LÜ Yue-jun1,FANG Yi1,ZHANG Yu-ling3   

  1. 1. Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China
    2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
    3. College of Marine Geosciences, Ocean University of China, Shandong Qingdao 266100, China
  • Received:2018-06-09 Revised:2019-03-02 Online:2019-06-20 Published:2019-07-09

摘要:

京津冀地区位于华北地震区北部,区内受多组北北东向、北西西向断裂带的影响,构造活动强烈,地震活动水平较高.该区是我国城市密集、人口稠密、经济较发达地带,一旦发生中强地震,会严重影响着区域经济的发展和社会稳定,因此该区的地震活动性愈加值得关注和研究.本文收集了京津冀地区历史破坏性地震和1970年以来中小地震,分析了区域最小完整性震级时间、空间分布特征,基于古登堡-里克特G-R关系的震级-频度分布原理和泊松分布原理,统计分析了京津冀地区的地震活动性参数:a值、b值和V4值,并定量地分析京津冀地区的地震时、空分布特征,探讨了京津冀地区的地震活动规律性、地震分布特征以及未来地震活动趋势.本文的研究结果可供京津冀地区地震活动性分析和地震危险性分析时参考.

关键词: 京津冀地区, 地震活动性, a值, b值, V4

Abstract:

Beijing-Tianjin-HeBei region is located in the northern part of the north China seismic zone, where the tectonic and seismicity activities are strong enough, because of the earthquake controlled by a series of the NNE and NWW faults. The region is the dense cities, densely populated; economy is relatively developed area of china. If a moderate-strong earthquake occurs in the area, it will cause a disaster and tremendously influence on the society and economy of the area, so, it is necessary to study and attention the seismicity in this region. In this paper, we collected the historical destructive earthquakes and moderate and small earthquakes since 1970 of the Beijing-Tianjin-HeBei region, analyses the temporal and spatial distribution characteristics of the minimum magnitude of completeness. Based on the magnitude-frequency distribution principle of the G-R relationship and Poisson distribution principle, this paper make a statistical analysis on the seismicity parameters a value, b value and the V4 value of research region, quantitative analyses the temporal and spatial distribution characteristics of earthquake in the Beijing-Tianjin-HeBei region. This paper discusses the regularity, distribution characteristics of the earthquake and future trend of seismic activity in the Beijing-Tianjin-HeBei region. The research results of this article can be used as a reference for the seismic activity and seismic risk analysis in the Beijing-Tianjin-HeBei region.

Key words: Beijing-Tianjin-HeBei region, Seismicity, a value, b value, V4 value

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