|
|||||
|
|
| 基于磁通门秒值数据的地震ULF磁场可靠信息提取研究 | |
| 引用本文： | 冯志生,李琪,卢军,李鸿宇,居海华,孙海军,杨福喜,张翼.基于磁通门秒值数据的地震ULF磁场可靠信息提取研究[J].华南地震,2010,30(2):1-7. |
| 作者姓名： | 冯志生 李琪 卢军 李鸿宇 居海华 孙海军 杨福喜 张翼 |
| 作者单位： | 1. 江苏省地震局,江苏,南京,210014 2. 中国地震局地球物理研究所,北京,100081 3. 中国地震台网中心,北京,100036 4. 新疆维吾尔自治区地震局,新疆,乌鲁木齐,830011 |
| 摘 要： | 利用磁通门观测数据进行分析,结果表明与周期在几分钟到几小时的极化值一样,5~100 s的磁场极化值Yzh同样具有年变化规律,因此简单的依据极化值Yzh由低值向高值的变化判断是否存在震前电磁辐射异常存在很大的风险。为此,分析了采用富氏拟合技术消除半年以上变化周期的Yzh与台站周边地区地震的关系,表明极化值Yzh高值与其后2个月内台站周边地区地震有很好的对应关系,且大部分地震都发生在1个月内。分析还表明Yzh高值异常持续时间一般为3~5 d,与外空磁场剧烈活动没有关系;单纯采用夜间观测数据不及采用全天观测数据的效果。 |
| 关 键 词： | 地磁场 地震预报 地震ULF辐射 |
The Seismic ULF Geomagnetic Reliable Information Exaction Based on Fluxgate Magnetometer Data of Second Value |
|
| FENG Zhisheng,LI Qi,LU Jun,LI Hongyu,JU Haihua,SUN Haijun,YANG Fuxi,ZHANG Yi.The Seismic ULF Geomagnetic Reliable Information Exaction Based on Fluxgate Magnetometer Data of Second Value[J].South China Journal of Seismology,2010,30(2):1-7. | |
| Authors: | FENG Zhisheng LI Qi LU Jun LI Hongyu JU Haihua SUN Haijun YANG Fuxi ZHANG Yi |
| Institution: | FENG Zhisheng1,LI Qi2,LU Jun3,LI Hongyu1,JU Haihua1,SUN Haijun4,YANG Fuxi4,ZHANG Yi4(1.Earthquake Administration of Jiangsu Province,Nanjing 210014,China,2.Institute of Geophysics,China Earthquake Administration,Beijing 100045,3.China Earthquake Networks Center,Beijing 100081,4.Earthquake Administration of Xinjiang Uygur Autonomous Region,Urumqi 830011,China) |
| Abstract: | This paper did analysis by using the data of fluxgate magnetometer.The result showed that the ratio of the spectral intensities of the vertical to horizontal components of the magnetic field(polarization) of which periods were from 5 to 100 s,same as the polarization of which periods were from several minutes to several hours,also had the annual variation,there would be risk failure when judging whether there were ULF magnetic field anomalies prior to earthquakes only by the variation of the polarization fr... |
| Keywords: | Geomagnetic field Earthquake prediction Seismic ULF emissions |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |