| 重庆地震台地倾斜观测资料分析 |
| |
| 引用本文： | 陈敏,郭欣,舒涛.重庆地震台地倾斜观测资料分析[J].地震地磁观测与研究,2006,27(5):38-42. |
| |
| 作者姓名： | 陈敏 郭欣 舒涛 |
| |
| 作者单位： | 中国,重庆,400056,重庆市地震台 |
| |
| 摘 要： | 分析了重庆地震台地倾斜观测资料,结合重庆辖区内10多年来的地震活动,提取地倾斜观测异常,为地震预测提供前兆参考。资料分析认为:对于发生在震中距为80~120km的5.0级以下地震,地倾斜观测地震异常少;5.0级以上的地震,地倾斜观测有异常记录,地震中期异常往往表现为震前几个月倾斜量的较大幅度变化,短期异常多数表现为震前差分值的低值变化(在均值附近变化,幅值较小,持续时间20d左右),部分表现为差分值震前突跳,临震异常主要是震前几天短周期波动变化。
|
| 关 键 词： | 形变 异常 分析 |
| 文章编号： | 1003-3246（2006）05-0038-05 |
| 收稿时间： | 2005-05-29 |
| 修稿时间： | 2005年5月29日 |
Analysis on ground tilts data at Chongqing Seismic Station |
| |
| Chen Min,Guo Xin,Shu Tao.Analysis on ground tilts data at Chongqing Seismic Station[J].Seismological and Geomagnetic Observation and Research,2006,27(5):38-42. |
| |
| Authors: | Chen Min Guo Xin Shu Tao |
| |
| Institution: | Chongqing Seismic Station, Chongqing 400056, China |
| |
| Abstract: | Combined with the records of seismic activities in Chongqing region during the last decades, the ground tilt data at Chongqing station were analyzed. The anomalies were extracted from ground tilt data as precursor referential parameter for earthquake prediction. It is believed that there are few anomalies on the ground tilt at Chongqing station before the earthquakes with magnitude less than 5.0 and the epicentral distance between 80 km and 120 km. Before the earthquakes with M >5.0, some anomalies were observed. The medium term anomalies were shown as great changes in the ground tilting several months before earthquakes; Most of short term anomalies were shown as lower difference value of ground tilting before earthquakes (the amplitude were small and closed to the mean value and the duration time was about 20 days), however, some of them were observed as sudden changes in the difference value before earthquake, and the impending earthquake anomalies were observed as wavy variation with short period. |
| |
| Keywords: | deformation anomaly analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
