金寨台地倾斜异常信息研究
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摘要
在研究金寨台地倾斜多年观测资料的基础上,提取地倾斜的正常变化形态及干扰形态。对安徽安庆4.8级、江西瑞昌4.9级等地震前的异常特征进行了分析、总结。结果表明,当倾斜仪出现打破以往年变正常规律的形态及多项指标超出二倍标准差时,即可视为异常出现。当趋势异常出现转折,即可视为进入短期阶段,应注意未来1个月左右地震发生的可能,矢量方向大致指向或背向震中。
Based on observed data at Jinzhai station, we obtained the forms of normal variation and disturbance of the regional ground tilt. Taking Anqin ML4.8 and Jiujiang ML4.9 as examples, we analyzed the anomaly features before earthquakes. The results show that when unusual annual variation appears and other factors surpasses two times of median error, it can defined as the anomaly. As the tendency anomaly starts turning, it can be taken as entering short-term stage. In this case an earthquake could happen in the coming month, with the direction of vector pointing to the potential epicenter.
引文
陈德福,罗荣祥,刘国培,1993a.地倾斜同震阶跃与震兆异常图象.地壳形变动力学观测与研究.北京:海洋出版杜.
    陈德福,罗荣祥,刘国培,1993b.地倾斜异常图象分类及其特征浅析.地壳形变动力学观测与研究.北京:海洋出版杜.
    蒋靖祥,王在华等,2005.2003年昭苏MS6.0地震定点形变异常初步分析.地震,25(2):83—90.
    卢双苓,钟普浴,2007.泰安台垂直摆、水平摆仪器异常变化总结.形变学科通讯,19(2):64—72.
    王梅,季爱东,2000.山东省定点形变倾斜观测异常指标研究.地震研究,23(4):398—404.
    王梅,李峰等,2004.数字化形变观测干扰识别.大地测量与地球动力学,24(1):94—98.
    张学阳,1987.潮汐观测中高精度气压辅助观测的必要性及气压效应的校正.地壳形变与地震,7(4):273—280.

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