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地震 ›› 2004, Vol. 24 ›› Issue (1): 76-81.

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吉林汪清7.2级深震前东北地区形变场分布特征

牛安福1, 张兴科2, 张晶1, 高福旺1, 吉平1   

  1. 1.中国地震局分析预报中心, 北京 100036;
    2.吉林省地震局分析预报中心, 吉林 长春 130022
  • 修回日期:2003-09-21 出版日期:2004-01-31 发布日期:2021-11-29
  • 作者简介:牛安福(1964-), 男, 山东单县人, 2000年获博士学位, 研究员, 主要从事地壳形变与地震关系及短期、 短临预测等方面研究。
  • 基金资助:
    地震科学联合基金项目(102069)

On the deformation fields in the Northeast China region before the Wangqing Mb 7.2 deep earthquake in Jilin Province

NIU An-fu1, ZHANG Xing-ke2, ZHANG Jing1, GAO Fu-wang1, JI Ping1   

  1. 1. Center for Analysis and Prediction, CSB, Beijing 100036;
    2. Center for Analysis and Prediction, Seismological Bureau of Jilin Province, Changchun 130022, China
  • Revised:2003-09-21 Online:2004-01-31 Published:2021-11-29

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摘要： 2002年6月29日在吉林汪清(43.5°N, 130.6°E)发生Mb7.2地震, 深度593 km。 该次地震是2001年11月14日昆仑山口西地震后, 我国大陆发生的一次重要地震事件。 该稿首先讨论了深震区与昆仑山地震带强地震活动之间的关系, 并对该地区观测的倾斜和短水准近几年的变化进行了研究, 给出了与地震相关的形变场异常场特征: ① 震前2~3年开始出现较大幅度的倾斜异常阶跃; ② 东北地区地倾斜存在远离震源的特征迁移; ③ 华北地区短水准出现特征波形异常, 并沿痰庐地震带迁移。

关键词: 形变场, 迁移, 东北深震

Abstract: On June 29, 2002, an earthquake with magnitude of 7.2 and depth of 593 km occurred in Wangqing County, Jilin Province. This is an important event since Kunlun Mountain earthquake occurred on November 14 of 2001. This paper discussed the possible relation between both areas' seismicity and characteristics of ground tilt and short leveling variations in recent years. Finally, the characteristics of deformation fields related to seismicity are proposed: ① Anomalous steps of ground deformation may be observed 2~4 years before the earthquake occurrence. ② The characteristics of ground tilts near the source in Northeast China region migrated away. ③ Anomaly images of short leveling in North China region showed wave anomaly, which migrated toward Tancheng-Lujiang fault zone.

Key words: Ground deformation, Deep earthquake, Leveling, Northeast China region

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