地震地质 ›› 2006, Vol. 28 ›› Issue (3): 503-508.

• 科研简讯 • 上一篇    下一篇

长白山天池火山区的地震活动特征分析

刘国明, 张恒荣, 孔庆军   

  1. 长白山火山监测站, 安图, 133613
  • 收稿日期:2005-12-19 修回日期:2006-07-09 出版日期:2006-09-14 发布日期:2009-08-27
  • 作者简介:刘国明,男,1971年生,1993年毕业于防灾技术高等专科学校,吉林大学地球科学学院在职硕士研究生,工程师,主要从事火山及地震监测与研究工作,电话:0433-5746118,E-mail:cbslgm@126.com.
  • 基金资助:
    科技部社会公益研究专项资金(2001DIAI0003)资助。

ANALYSIS OF THE SEISMIC ACTIVITY AT THE CHANGBAISHAN TIANCHI VOLCANO

LIU Guo-ming, ZHANG Heng-rong, KONG Qing-jun   

  1. Changbaishan Tianchi Volcano Observatory, Antu 133613, China
  • Received:2005-12-19 Revised:2006-07-09 Online:2006-09-14 Published:2009-08-27

摘要: 2002年6月以来,长白山天池火山区的地震活动明显增强。利用长白山火山中心站的观测资料对长白山天池火山地震的活动特征进行了研究。火山地震的频谱分析和时频分析结果表明,自1999年以来发生的火山地震主要为构造型火山地震。对这些火山地震进行了尾波Q值分析并与四川地区的Q值进行了对比,结果表明长白山火山区尾波Q值偏低,说明这一地区构造活动水平相对较强。

关键词: 天池火山, 火山地震, 频谱分析, 尾波Q

Abstract: The seismic intensity at the Tianchi volcano has increased obviously since June, 2002. In this paper, we introduce the characters of the seismic activity at Tianchi volcano based on the seismic data recorded at the Tianchi Volcano Observatory (TVO). It shows that since 1999 the seismic activity mainly belongs to the tectonic event based on a seismic spectral and time frequency analysis. We examine the coda Q values of these earthquakes and compare them with the data from Sichuan district, and find that the coda Q value from Changbaishan is lower than that in Sichuan, indicating that the level of the tectonic activity in the researched Changbaishan area is relatively high.

Key words: Tianchi volcano, volcanic earthquakes, seismic spectral analysis, coda Q values

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