莱州M4.6地震前山东形变异常特征
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
分析莱州M4.6地震前山东形变观测存在的常家庄跨断层流动短水准、烟台水平摆倾斜NS向和泰安重力异常变化特征。结果显示,3个观测分量的异常均为中、短期趋势异常,震中距最小的异常出现的最早,持续时间最长;震中距最大的异常出现的最晚,持续时间最短。异常点分布在震中周围276 km范围内,且与地质构造有一定关系。结合地质构造和地震活动性探讨了异常产生的可能机理。
The leveling data crossing fault in Changjiazhuang,the NS component of tiltmeter in Yantai and gravity data in Taian before Laizhou M4. 6 earthquake were analyzed. The result shows that each of the 3 kinds of observation data appeared mid-term or short-term trend abnormities. The characteristics of the abnormities is: the closer of the distance from epicenter,the earlier it occured,and the farther from epicenter,the longer it lasted for.The distance away epicenter of the farthest abnormal point reaches 276 km,and the abnormities are connected to the geological structure.
引文
1 张立.大姚地震前连续形变短期前兆特征[J].地震,2005,25(1):76-82.(Zhang Li.Successive deformation short-term precursor characteristics before the Dayao earthquake[J].Earthquake,2005,25(1):76-82)
    2 牛安福.地壳持续加速变形与地震关系的研究[J].大地测量与地球动力学,2002,22(1):29-33.(Niu Anfu.Study on the continuously accelerated deformation and the relationship with earthquakes[J].Journal of Geodesy and Geodynamics,2002,22(1):29-33)
    3 施顺英.基于跨断层形变异常预测云南地震的试验[J].大地测量与地球动力学,2007,27(5):82-87.(Shi Shunying.Scientific test for earthquakes prediction in Yunnan based on fault-crossing deformation anomaly[J].Journal of Geodesy and Geodynamics,2007,27(5):82-87)
    4 杨永林.鲜水河断裂带现今活动特征研究[J].大地测量与地球动力学,2007,27(6):22-27.(Yang Yonglin.On present activity characteristics of Xianshuihe fault zone[J].Journal of Geodesy and Geodynamics,2007,27(6):22-27)
    5 苏琴.耿达短水准异常与汶川8.0级地震[J].大地测量与地球动力学,2009,29(8):103-105.(Su Qin.Short-line leveling anomaly at Gengda and Wenchuan Ms8.0 earthquake[J].Journal of Geodesy and Geodynamics,2009,29(8):103-105)
    6 张玲.山东地区各分区地震应力场特征分析[J].华北地震科学,2004,22(4):12-15.(Zhang Ling.Characteristics of stress field in each subregion of Shandong area[J].North China Earthquake Sciences,2004,22(4):12-15)
    7 蒋骏.地震前兆信息处理与软件系统(EIS2000)[M].北京:地震出版社,2000.(Jiang Jun.Information processing and software system of earthquake precursor(EIS2000)[M].Beijing:Seismological Press,2000)
    8 李杰.跨断层形变测量异常特征分析[J].地震,2010,30(2):100-111.(Li Jie.Analysis of the anomaly characteristics from cross-fault deformation measurements[J].Earthquake,30(2):100-111)
    9 李杰.濮阳ML4.6地震前泰安台形变异常特征分析[J].大地测量与地球动力学,2007,27(4):100-104.(Li Jie.On characteristics of deformation anomalies at Taian station before Puyang ML4.6 earthquake[J].Journal of Geodesy and Geodynamics,2007,27(4):100-104)
    10 吕品姬.定点倾斜观测映震能力综述[J].大地测量与地球动力学,2010(Supp.Ⅱ):50-56.(LüPinji.Summary of ability for catching precursors before earthquake from fixed-tilt observations[J].Journal of Gedesy and Geodynamics,2010(Supp.Ⅱ):50-56)
    11 晁洪太.《山东省地震构造图》、《山东省新构造图》说明书[M].济南:山东省地图出版社,1997.(Chao Hongtai.The exponent of《Seismotectonic map of Shandong province》and《Neotectonic map of Shandong province》[M].Jinan:The Map Publishing House of Shandong Province,1997)
    12 李杰.岫岩MS5.4地震前烟台形变异常特征及机理分析[J].地震,2006,26(3):71-77.(Li Jie.Study on the characteristics and mechanism of deformation anomaly in Yantai region before Xiuyan earthquake with Ms5.4[J].Earthquake,2006,26(3):71-77)
    13 刘耀炜,牛安福,卢军.强震短期前兆异常特征物理分析和解释的研究进展[J].地震,24(4),57-65.(Liu Yaowei.Study progress of physical analysis and explanation of short-term strong earthquake precursory anomaly characteristics[J].Earthquake,2004,24(4):57-65)
    14 刁守中,华爱军,苏鸾声.1995年9月20日山东省苍山5 .2级地震[A]//中国震例(1995-1996)[M].北京:地震出版社,1997.(Diao Shouzhong,Hua Aijun,Su Luansheng.The Cangshan M5.2 earthquake in Shandong province on September 20,1995[A]//China Earthquake Cases(1995-1996)[M].Beijing:Seismological Press,1997)

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