欢迎访问《地震》,

地震 ›› 2016, Vol. 36 ›› Issue (1): 32-37.

• • 上一篇    下一篇

2013年岷县漳县6.6级地震前地震b值异常特征研究

冯建刚1, 张辉1, 杨萍1,2   

  1. 1.中国地震局兰州地震研究所, 甘肃 兰州 730000;
    2.新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011
  • 收稿日期:2015-09-06 发布日期:2020-07-03
  • 作者简介:冯建刚(1977-), 男, 山西屯留人, 副研究员, 主要从事地震活动性和数字地震波应用等研究。
  • 基金资助:
    中国地震局地震科技星火计划攻关项目(XH14049、 XH15042), 甘肃省科技计划(145RJZA186), 国家自然科学基金项目(41304048)、 地震监测预报专项(20160107)等项目联合资助

Anormalies of b-value Changes beforey the 2013Minxian-Zhangxian MS6.6 Earthquake

FENG Jian-gang1, Zhang Hui1, YANG Ping1,2   

  1. 1. Lanzhou Institute of Seismology, CEA, Gansu Lanzhou 730000, China;
    2. Earthquake Administration of Xinjiang Uygur Autonomous Region, Xinjiang Urumqi 830011, China
  • Received:2015-09-06 Published:2020-07-03

摘要: 本文利用1990年以来的甘肃测震台网资料, 计算获得2013年岷县漳县6.6级地震前邻区地震b值和Δb值的空间图像。 结果表明, 该6.6级地震发生在甘东南地区显著低b值异常区域的边缘, 且震前邻区地震Δb值异常显著。 从岷县漳县6.6级地震与低b值空间分布关系来看, 该地震的发生并未降低该区域的强震危险性。

关键词: 地震b值, 地震危险性, 2013年岷县漳县6.6级地震

Abstract: Based on seismic data from the Gansu seismic network since 1990, we calculated b values and Δb values in the epicentral region before the 2013 Minxian-Zhangxian MS6.6 earthquake. The results show that the earthquake occurred at the margin of significantly low b value area in southeastern Gansu, and before earthquake the area around the epicenter has significantly abnormal Δb values. From the earthquake and the spatial distribution of lower b values, this earthquake does not decrease the possibility of dangerous strong earthquake to occur in this region.

Key words: b value anormaly, Earthquake risk, The 2013 Minxian-Zhangxian MS6.6 earthquake

中图分类号: