|本期目录/Table of Contents|

[1]徐云马,祝意青,程宏宾,等.2001~2006年兰州—天水—武都地区重力场时变小波分析*[J].地震研究,2010,33(01):68-74.
 XU Yun-ma,ZHU Yi-qing,CHENG Hong-bin,et al.Wavelet Analysis of the Temporal Gravity Variation in Lanzhou-Tianshui-Wudu Area from 2001 to 2006[J].Journal of Seismological Research,2010,33(01):68-74.
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2001~2006年兰州—天水—武都地区重力场时变小波分析*(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
33
期数:
2010年01期
页码:
68-74
栏目:
出版日期:
2010-01-01

文章信息/Info

Title:
Wavelet Analysis of the Temporal Gravity Variation in Lanzhou-Tianshui-Wudu Area from 2001 to 2006
作者:
徐云马祝意青程宏宾苏 瑞
(中国地震局第二监测中心,西安 710054)
Author(s):
XU Yun-maZHU Yi-qingCHENG Hong-binSU Rui
(Second Crust Monitoring and Application Center,CEA,Xi'an 710054,Shaanxi,China)
关键词:
重力场时变 构造活动 小波分析 兰天武地区
Keywords:
temporal gravity variation tectonic activity wavelet analysis Lanzhou-Tianshui-Wudu
分类号:
P315.72+6
DOI:
-
摘要:
对2001~2006年兰州—天水—武都地区5期重力场时变资料进行小波分解,结合2003年11月岷县5.2级地震、2004年9月岷县5.0级地震以及2006年6月武都、文县间5.0级地震进行分析。探讨了无震年份、有震年份及较长时段的重力场时变资料小波分解结果与地震活动之间的关系,结果表明:用小波分解方法可有效分离重力场时变的不同波长成分; 该地区不同层次的重力场时变异常反映了一定尺度意义上不同深度的介质密度的动态变化分布,说明兰州—天水—武都地区中深部地质构造活动所引起的重力异常变化的2阶、3阶小波细节对2003、2004、2006年3次MS≥5.0地震反应明显。
Abstract:
In this paper,we adopt wavelet analysis method to separate different components with different wave length of gravity changes in Lanzhou-Tianshui-Wudu area from 2001 to 2006.The gravity changes were related to the recently-occurred earthquakes,such as MS5.2 Minxian Earthquake on November 2003; MS5.0 Minxian Earthquake on September 2003,MS5.0 Wudu-Wenxian Earthquake on June 2006.Then we discuss the relationship between gravity variations,earthquake activities and tectonic activities.The results show that we can distinguish different gravity changes with different wavelet components by wavelet decomposition,among which 2-order and 3-order wavelet decomposition parts can expose the middle and deep geological and tectonic activities.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2009-03-02
基金项目:地震科学基金(A08060)和国家自然基金(40874035)联合资助.

更新日期/Last Update: 2010-01-23