汶川8级地震前陕西地倾斜γ值的异常反应
|
摘要
对陕西省定点形变资料进行处理时发现,在汶川8级地震前形变资料出现异常现象:1)震前3个月,乾县、西安、宝鸡和汉中台的水平摆和水管仪资料,潮汐因子γ值明显增大;2)临震前1天,乾县和西安台的水管仪NS分量资料,出现畸变等。
When processing the fixed deformation data of Shanxi province,it is found that the abnomal phenomenon appeared before Wenchuan Ms8.0 earthquake,which are as follows.1)3 months before the earthquake occurred,the tilt tidal factor γ value of quartz horizontal pendulum and water tube teltmeter in Qianxian,Xi'an,Baoji and Hanzhong stations was evidently increasing;2)1 day before the earthquake occurred,The distortion phenomenon appeared in the NS direction data of water tube tiltmeter at Qianxian and Xi'an stations.
When processing the fixed deformation data of Shanxi province,it is found that the abnomal phenomenon appeared before Wenchuan Ms8.0 earthquake,which are as follows.1)3 months before the earthquake occurred,the tilt tidal factor γ value of quartz horizontal pendulum and water tube teltmeter in Qianxian,Xi'an,Baoji and Hanzhong stations was evidently increasing;2)1 day before the earthquake occurred,The distortion phenomenon appeared in the NS direction data of water tube tiltmeter at Qianxian and Xi'an stations.
引文
1熊先保,等.固体潮观测数据预处理中的常用方法及计算机实现[J].地震地磁观测与研究,2006,27(4):98-101.1Xiong Xianbao,et al.Some commonly used methods and its computer realization in preprocessing solid tide observation data[J].Seismological and Geomagnetic Observation and Research,2006,27(4):98-101.(in Chinese)
2吴翼麟,王军,吴静.强震前倾斜固体潮振幅因子组合动态之研究[J].地壳形变与地震,1993,13(2):62-71.2Wu Yilin,Wang Jun and Wu Jin.Rescarch on combination of amplitude factors of earth tilts tide dynamic before a large earthequake[J].Crustal Deformation and Earhtquake,1993,13(2):62-71.(in Chinese)
3牛安福,李旭东,柯丽君.倾斜潮汐因子γ值异常的定量化研究[J].地壳形变与地震,1998,18(2):63-67.3Nu Anfu,Li Xudong and Ke Lijun.On the anomalous quanti-ty of tilt tidal amplitude factorγ[J].Crustal Deformation and Earhtquake,1998,18(2):63-67.(in Chinese)
4李旭东,罗煜,刘家乐.山东荷泽5.9级地震前泰安台γ因子动态变化[J].地壳形变与地震,1985,5(2):107-112.4Li Xudong,Luo Yu and Liu Jiale.Dynamic change of tide factorγobserved with the quartz tiltmeter before the Heze Ms5.9earthquake,Shandong province[J].Crustal Deforma-tion and Earhtquake,1985,5(2):107-112.(in Chinese)
5陈德福,聂磊著.液体静力水准仪器及其应用[M].北京:地震出版社,2008.5Chen Defu and Nie Lei.Hydrostatic leveler and its applica-tion[M].Beijing:Seismological Press,2008.(in Chinese)
6傅再扬,吴绍祖,郑永通.福建地区地倾斜中短期地震前兆识别及映震效应初探[J].华南地震,2003,23(4):66-70.6Fu Zaiyang,Wu Shaozhu and Zhen Yongtong.Identification and primary study on the reflecting earthquake effect of the medium-short term precursory anomalies for ground tilt in Fujian[J].South China Journal of Seismology,2003,23(4):66-70.(in Chinese)
2吴翼麟,王军,吴静.强震前倾斜固体潮振幅因子组合动态之研究[J].地壳形变与地震,1993,13(2):62-71.2Wu Yilin,Wang Jun and Wu Jin.Rescarch on combination of amplitude factors of earth tilts tide dynamic before a large earthequake[J].Crustal Deformation and Earhtquake,1993,13(2):62-71.(in Chinese)
3牛安福,李旭东,柯丽君.倾斜潮汐因子γ值异常的定量化研究[J].地壳形变与地震,1998,18(2):63-67.3Nu Anfu,Li Xudong and Ke Lijun.On the anomalous quanti-ty of tilt tidal amplitude factorγ[J].Crustal Deformation and Earhtquake,1998,18(2):63-67.(in Chinese)
4李旭东,罗煜,刘家乐.山东荷泽5.9级地震前泰安台γ因子动态变化[J].地壳形变与地震,1985,5(2):107-112.4Li Xudong,Luo Yu and Liu Jiale.Dynamic change of tide factorγobserved with the quartz tiltmeter before the Heze Ms5.9earthquake,Shandong province[J].Crustal Deforma-tion and Earhtquake,1985,5(2):107-112.(in Chinese)
5陈德福,聂磊著.液体静力水准仪器及其应用[M].北京:地震出版社,2008.5Chen Defu and Nie Lei.Hydrostatic leveler and its applica-tion[M].Beijing:Seismological Press,2008.(in Chinese)
6傅再扬,吴绍祖,郑永通.福建地区地倾斜中短期地震前兆识别及映震效应初探[J].华南地震,2003,23(4):66-70.6Fu Zaiyang,Wu Shaozhu and Zhen Yongtong.Identification and primary study on the reflecting earthquake effect of the medium-short term precursory anomalies for ground tilt in Fujian[J].South China Journal of Seismology,2003,23(4):66-70.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心