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地震 ›› 1998, Vol. 18 ›› Issue (2): 177-183.

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甘肃永登5.8级地震前兆异常特征及天祝—古浪5.4级地震中短期预报

毛可, 王振亚, 石特临   

  1. 中国兰州 730000 国家地震局兰州地震研究所
  • 收稿日期:1997-06-23 修回日期:1997-10-15 出版日期:1998-04-30 发布日期:2022-05-10
  • 作者简介:毛可,男,1942年10月3日出生,副研究员,主要从事地震预测等研究工作。

STUDY ON THE PRECURSORY CHARACTERISTICS OF YONGDENG EARTHQUAKE (MS=5.8) AND MEDIUM-AND SHORT-TERM PREDICTION OF TIANZHU-GULANG EARTHQUAKE (MS= 5.4)

Mao Ke, Wang Zhenya, Shi Telin   

  1. Lanzhou Institute of Seismology, SSB, Lanzhou 730000, China
  • Received:1997-06-23 Revised:1997-10-15 Online:1998-04-30 Published:2022-05-10

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摘要： 综合分析了1995年7月22日甘肃永登5.8级地震前兆异常时空分布特征,主要表现为异常数量多、分布广、密度大、震后响应性异常显著,且时空分布具有成组性、空间分布具有相对稳定性。 这可能与该区中强震成丛活动方式有关。 此研究结果在1996年6月1日甘肃天祝—古浪5.4级地震中短期预报中发挥了作用。

关键词: 前兆异常, 中期预报, 短期预报, 永登地震

Abstract: In this paper, the characteristics of temporal and spatial distribution of the precursory anomaly before Yongdeng earthquake have been analyzed by using synthetical method. The analytical results show that the precursors of Yongdeng earthquake (MS=5.8) are of the following features: large quantity, wide distribution, high density and obvious postseismic response. The temporal distribution is in groups, the spatial distribution is relatively stable, which may be related with such a pattern that the moderately strong earthquakes occurred in swarms in this area. This research result has been a pplied to them edium-term and short-term prediction of Tianzhu-Gulang earthquake (MS=5.4) in 1996.

Key words: Precursory anomaly, Mid-term prediction, Short-term Prediction, Yongdeng earthquake