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地震 ›› 2004, Vol. 24 ›› Issue (1): 170-175.

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甘肃景泰MS5.9地震前后小地震视应力计算讨论

吴晶, 顾瑾萍   

  1. 中国地震局分析预报中心, 北京 100036
  • 修回日期:2003-09-12 出版日期:2004-01-31 发布日期:2021-11-29
  • 作者简介:吴晶(1977-), 女, 江苏徐州人, 2001年在读硕士研究生, 主要从事数字地震波等研究。

Discussion on apparent stress of small earthquakes before and after Jingtai earthquake with MS 5.9 in Gansu Province

WU Jing, GU Jin-ping   

  1. Center for Analysis and Prediction, CSB, Beijing 100036, China
  • Revised:2003-09-12 Online:2004-01-31 Published:2021-11-29

摘要: 分析处理甘肃数字化地震台网记录到的1999年11月至2000年6月的68个地震, 给出了甘肃景泰2000年6月6日MS5.9地震前后小地震的视应力变化情况, 得到该区的视应力水平, 并讨论了主震前后的视应力演化特征以及视应力与震级的关系。

关键词: 数字地震, 地震矩, 视应力

Abstract: A series of earthquakes (Jingtai MS 5.9 Earthquake series, there are totally 68 events), recorded by Digital Seismic Network in Gansu Province, are selected to calculate the apparent stress in this region. The authors give the time distribution of apparent stress. Furthermore, the average value of apparent stress is got, which is in accordance with the result got from Wu Zhongliang. The features of apparent stress change before and after the main shock are discussed. At the end, the relation between apparent stress and magnitude is obtained.

Key words: Digital seismology, Seismic moment, Apparent stress

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