泾阳短水准异常与地震关系浅析
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摘要
通过对泾阳地震台短水准观测资料和地震关系分析,认为观测资料对南北地震带西南方向部分地震有一定映震能力。对影响观测的问题进行初步分析。
Short leveling data from Jingyang seismological station comprise some of the most important information that helps to monitor the Kouzhen—Guanshan fault zone.Several strong earthquakes have struck the surrounding area of Shaanxi Province:the Ninger M6.4earthquake on June 3,2007,the Lijiang M7.0earthquake on February 3,1996 in Yunnan,and the Anxian M5.0earthquake on September 3,1999 in Sichuan.Short leveling data from Jingyang seismological station show varying degrees of anomaly.There was an anomaly decline that lasted for 18 days at a rate of 0.005 mm per day before the Ninger M6.4earthquake,for 23 days at a rate of 0.005 mm per day before the Lijiang M7.0earthquake,and for 9days at a rate of 0.009 mm per day before the Anxian M5.0earthquake.This study evaluates the ability of short leveling data at Jingyang to predict earthquakes by analyzing the relationship between magnitude,anomaly decline rate,and duration of anomaly decline along with the relationship between magnitude and the duration of the anomaly in cross-fault deformation measurement.To intuitively portray connections among these data,this study clearly indicates anomalies in the data using charts.The data will be used in the experimental formulae of the China Earthquake Administration with other earthquakes,and the results harvested.This study considers that an ability to predict earthquakes will be revealed in the short leveling data of Jingyang seismological station,located in the southwest area of the north-south seismic zone.At the same time,this study discusses how much damage has been caused to the observation environment by the major quarries near the short leveling area and the effect that the arrival and departure of heavy trucks has had on observation data.After summarizing and rethinking the problems of seismic observation,this study gathers together certain experiences for use in future earthquake prediction and makes some suggestions to improve the quality of short leveling observation.
Short leveling data from Jingyang seismological station comprise some of the most important information that helps to monitor the Kouzhen—Guanshan fault zone.Several strong earthquakes have struck the surrounding area of Shaanxi Province:the Ninger M6.4earthquake on June 3,2007,the Lijiang M7.0earthquake on February 3,1996 in Yunnan,and the Anxian M5.0earthquake on September 3,1999 in Sichuan.Short leveling data from Jingyang seismological station show varying degrees of anomaly.There was an anomaly decline that lasted for 18 days at a rate of 0.005 mm per day before the Ninger M6.4earthquake,for 23 days at a rate of 0.005 mm per day before the Lijiang M7.0earthquake,and for 9days at a rate of 0.009 mm per day before the Anxian M5.0earthquake.This study evaluates the ability of short leveling data at Jingyang to predict earthquakes by analyzing the relationship between magnitude,anomaly decline rate,and duration of anomaly decline along with the relationship between magnitude and the duration of the anomaly in cross-fault deformation measurement.To intuitively portray connections among these data,this study clearly indicates anomalies in the data using charts.The data will be used in the experimental formulae of the China Earthquake Administration with other earthquakes,and the results harvested.This study considers that an ability to predict earthquakes will be revealed in the short leveling data of Jingyang seismological station,located in the southwest area of the north-south seismic zone.At the same time,this study discusses how much damage has been caused to the observation environment by the major quarries near the short leveling area and the effect that the arrival and departure of heavy trucks has had on observation data.After summarizing and rethinking the problems of seismic observation,this study gathers together certain experiences for use in future earthquake prediction and makes some suggestions to improve the quality of short leveling observation.
引文
[1]郭良迁,黄立人,马青,等.地壳垂直形变场与强震关系研究[J].灾害学,2007,22(1):6-12GUO Liang-qian,HUANG li-ren,MA Qing,et al.Rsearch on the Relationship Between Vertical Crustal Deformation Field and Strong Earthquakes[J].Journal of Catastrophology,2007,22(1):6-12.(in Chinese)
[2]胡亚轩,王庆良,崔笃信,等.根据断层形变剖面资料分析泾阳口镇—关山断层活动状况[J].灾害学,2008,23(增刊):62-65.HU Ya-xuan,WANG Qing-liang,CUI Du-xin,et al.Analysis on Activity of Kouzhen—Guanshan Fault in Jingyang Based on Deformation Profile Data[J].Journal of Catastrophology,2008,23(Supp):62-65.(in Chinese)
[3]安其美,丁立丰,王海忠,等.龙门山断裂带的性质与活动性研究[J].大地测量与地球动力学,2004,24(2):115-119.AN Qi-mei,DING Li-feng,WANG Hai-zhong,et al.Rsearch of Property and Activity of Longmen Mountain Fault Zone[J].Crustal Deformation and Earthquake,2004,24(2):115-119.(in Chinese)
[4]龙思胜.2001年四川雅江6.0级地震序列的破裂特征及发震构造[J].中国地震,2004,20(1):1-11.LONG Si-sheng.Fracture Characters and Statutory of the Yajiang Earthquake Sequence with MS6.0in the Sichuan Region in 2001[J].Earthquake Rsearth in China,2004,20(1):1-11.(in Chinese)
[5]虎雄林,吴小平,王彬,等.用相空间重建法研究武定地震序列[J].地震研究,2004,27(3):225-229.HU Xiong-lin,WU Xiao-ping,WANG Bin,et al.Using Reconstruction Method of Phase Space to Study the Wuding Earthquake Sequence[J].Journal of Seismological Rsearch,2004,27(3):225-22.(in Chinese)
[2]胡亚轩,王庆良,崔笃信,等.根据断层形变剖面资料分析泾阳口镇—关山断层活动状况[J].灾害学,2008,23(增刊):62-65.HU Ya-xuan,WANG Qing-liang,CUI Du-xin,et al.Analysis on Activity of Kouzhen—Guanshan Fault in Jingyang Based on Deformation Profile Data[J].Journal of Catastrophology,2008,23(Supp):62-65.(in Chinese)
[3]安其美,丁立丰,王海忠,等.龙门山断裂带的性质与活动性研究[J].大地测量与地球动力学,2004,24(2):115-119.AN Qi-mei,DING Li-feng,WANG Hai-zhong,et al.Rsearch of Property and Activity of Longmen Mountain Fault Zone[J].Crustal Deformation and Earthquake,2004,24(2):115-119.(in Chinese)
[4]龙思胜.2001年四川雅江6.0级地震序列的破裂特征及发震构造[J].中国地震,2004,20(1):1-11.LONG Si-sheng.Fracture Characters and Statutory of the Yajiang Earthquake Sequence with MS6.0in the Sichuan Region in 2001[J].Earthquake Rsearth in China,2004,20(1):1-11.(in Chinese)
[5]虎雄林,吴小平,王彬,等.用相空间重建法研究武定地震序列[J].地震研究,2004,27(3):225-229.HU Xiong-lin,WU Xiao-ping,WANG Bin,et al.Using Reconstruction Method of Phase Space to Study the Wuding Earthquake Sequence[J].Journal of Seismological Rsearch,2004,27(3):225-22.(in Chinese)
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