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地震 ›› 2001, Vol. 21 ›› Issue (2): 94-100.

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强震前单台测震学异常综合研究——以喀什地震台为例*

李莹甄, 曲延军   

  1. 新疆维吾尔自治区地震局,新疆乌鲁木齐 830011
  • 收稿日期:2000-07-19 修回日期:2000-10-30 出版日期:2001-04-30 发布日期:2022-10-27
  • 作者简介:李莹甄,女,新疆呼图壁县人助理研究员主要从事测震学分析预报研究。

Comprehensive study on the single station seismic anomalies before strong earthquakes--Taking Kashi seismic station as an example

LI Ying-zhen， QU Yan-jun   

  1. Seismological Bureau of Xinjiang Uygur Autonomous Region, Urumqi 830011, China
  • Received:2000-07-19 Revised:2000-10-30 Online:2001-04-30 Published:2022-10-27

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摘要： 利用喀什地震台1980～1996年单台地震报告资料,以震中距200km、150km、100km3种空间尺度为界进行地震频度、b值、缺震、Z值、小震调制比、地震危险度D等方法的计算分析,尝试研究提取台站周围6级以上强震前,各种方法的前兆异常特征。研究结果表明,强震前多种方法存在不同程度的中短期异常,对应地震在150km范围内,远场对应效果不好。多种方法在3种空间尺度条件下的异常反应,与未来强震的空间范围存在一定的经验相关。

关键词: 测震学方法, 异常综合, 中短期异常, 喀什地震台

Abstract: We tried to refine the comprehensive seismic anomaly characteristics of multiple methods before the large earthquakes (MS≥6.0) in the range of 150 km from the single seismic station. The seismic f requency, bvalue, seismicgap, Zvalue, small earthquake modulating ratio and seismic danger deg ree with the epicenter distances of 200km, 150km and 100km were calculated by using the seismic data of the Kashi seismic station. Through analyzing these compo nents, it is found that there are anomalies with various grades on each method before the strong earthquakes, which co rresponded to the strong earthquakes with the range of 150km. However, there is no good respondence to the strong earthquakes with larg er epicenter distances. It is also found that the anomalies of multiple methods with the three distance scales have the empi rical correlation with the space extent of the coming strong earthquakes.

Key words: Comprehensive seismic anomaly, Single station seismology, Kashi seismic station

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