| 断层气CO2测点选建及观测资料在四川绵竹、雅江地震前的反映 |
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| 引用本文： | 官致君,闻学泽,程万正. 断层气CO2测点选建及观测资料在四川绵竹、雅江地震前的反映[J]. 四川地震, 2002, 0(4): 22-27 |
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| 作者姓名： | 官致君 闻学泽 程万正 |
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| 作者单位： | 四川省地震局,四川,成都,610041 |
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| 基金项目： | 国家重点基础研究发展规划项目大陆强震机理与预测 (95 130 5 0 5 )资助 |
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| 摘 要： | 介绍了断层气CO2测定方法及川西地区断层气CO2观测点的选建和观测情况。初步观测结果显示，在1999年9月11月四川绵竹两次5.0级地震及2001年2月四川雅江5.0级地震和6.0级地震前，川北和冕宁测点的断层气CO2有很好的短期地震前兆异常显示，观测结果还表明，直接埋设在断层破碎带上的观测点可能比埋在第四纪松散堆积层中的观测点能更好地检测到来自地壳内部的断层气CO2异常信息。
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| 关 键 词： | 断层气 地震前兆信息 CO2 二氧化碳 四川 观测资料 |
| 文章编号： | 1001-8115(2002)04-0022-06 |
| 修稿时间： | 2001-06-14 |
Choosing site for gas CO2 observation and change characters of gas CO2 content before Mianzhu and Yajiang Earthquake |
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| GUAN Zhi-jun,WEN Xue-ze,CHENG Wan-zhen. Choosing site for gas CO2 observation and change characters of gas CO2 content before Mianzhu and Yajiang Earthquake[J]. Earthquake Research in Sichuan, 2002, 0(4): 22-27 |
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| Authors: | GUAN Zhi-jun WEN Xue-ze CHENG Wan-zhen |
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| Abstract: | The method of testing the content of gas CO 2 released from a fault and sites choosing and buliding in western Sichuan regions are introduced.Primary results show that before two M 5.0 Mianzhu Earthquakes in September 1999 and two ( M 5.0 and M 6.0)Yajiang Earthquakes in February 2001,the data display the changes of gas CO 2 content.At the same time,our results show that gas CO 2 content taken from the sites near a ruptured fault display better results than that taken from the sites located in the Quaternary sedimentary faults. |
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| Keywords: | fault product gas geo-chemical survey geo-chemical anomaly earhthquake precursor |
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