印尼8.7、 8.5级巨震对云南地区地震活动的远震触发分析

地震 ›› 2005, Vol. 25 ›› Issue (4): 49-57.

印尼8.7、 8.5级巨震对云南地区地震活动的远震触发分析

李纲, 刘杰, 郭铁栓

中国地震台网中心, 北京 100036

收稿日期:2005-05-16 修回日期:2005-06-07 出版日期:2005-10-31 发布日期:2021-11-10
作者简介:李纲(1974-), 男, 吉林省吉林市人, 硕士, 主要从事地震分析预报和数字地震学等研究。
基金资助:
国家重点基础研究发展规划项目(2004CB418406), “十五”国家科技攻关项目(2004BA601B01-04-03)

Analysis of teleseimically trigged seismicity in Yunnan region under influence of the Indonesia large earthquakes with M8.7 and M8.5

LI Gang, LIU Jie, GUO Tie-shuan

China Earthquake Networks Center, CEA, Beijing 100036, China

Received:2005-05-16 Revised:2005-06-07 Online:2005-10-31 Published:2021-11-10

摘要/Abstract

摘要： 在收集整理印尼8.7、 8.5级巨震活动特点基础上, 分析了这两次巨震对云南地区地震活动的远震触发特征。依据腾冲、昆明两个台站的数字波形资料, 对这两次巨震的触发特点进行了分析。认为云南地区2004年12月26日后地震活动的显著增强, 是由印尼8.7级巨震的长周期面波触发引起的。 8.5级地震后, 云南地区地震活动没有引起触发, 主要原因是8.7级地震已引起相关地震活动, 短期内断层不足以积累使其破裂的能量所致。远震触发的地区与高热流地区一致。

关键词: 印尼8.7、8.5级巨震, 远震触发, 地震活动, 云南地区

Abstract: Based on collecting and settling the characteristics of the Indonesia large earthquakes with M8.7 and M8.5, the feature of the teleseismically triggered seismicity in Yunnan region under influence of the two earthquakes is analyzed. Based on the digital waveform records of Kunming and Tengchong stations, the triggering feature of the two large earthquakes is analyzed. The seismicity remarkably enhanced after 2004 December 26 in Yunnan region is considered to be caused by the long period surface-wave triggered action of Indonesia M8.7 earthquake. There is no triggered seismicity in Yunnan region after the earthquake with M8.5. The main reason is that the faults could not accumulate enough energy to produce rupture in such short time after the relative seismicity is trigged by the earthquake with M8.7. The triggered areas are consistent with the high heat flow areas.

Key words: The large earthquake with M8.7 and M8.5, Teleseismically triggering, Seismicity, Yunnan region

中图分类号:

P315.3

李纲, 刘杰, 郭铁栓. 印尼8.7、 8.5级巨震对云南地区地震活动的远震触发分析[J]. 地震, 2005, 25(4): 49-57.

LI Gang, LIU Jie, GUO Tie-shuan. Analysis of teleseimically trigged seismicity in Yunnan region under influence of the Indonesia large earthquakes with M8.7 and M8.5[J]. EARTHQUAKE, 2005, 25(4): 49-57.

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