华北地区断层形变与地震的关系
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摘要
用线性拟合方法计算了华北地区1985—2006年断层背景活动速率,并对跨断层形变测量资料逐项扫描识别异常,分区带统计计算异常数量和异常频率。结果显示,在6级及以上地震发生前一年左右,异常频率开始增大,地震发生在异常高频延续过程中或者结束后。异常频率对5级地震也有一定的反映。
The background deformation crustal velocity of North China in the period from 1985 to 2006 was calculated with the linear fitting method.Anomaly-distinguishing scanning was made one iterm after another and the data including cross-fault deformation observation anomaly amount and anomaly frequency were calculated according to the zones or areas.The results indicate that about one year before earthquakes of M≥6.0,anomaly frequency became larger and earthquake often occurred during or after the progress of high-frequency anomaly.There is also certain reflections of the anomaly frequency on earthquakes of M≥5.0.
The background deformation crustal velocity of North China in the period from 1985 to 2006 was calculated with the linear fitting method.Anomaly-distinguishing scanning was made one iterm after another and the data including cross-fault deformation observation anomaly amount and anomaly frequency were calculated according to the zones or areas.The results indicate that about one year before earthquakes of M≥6.0,anomaly frequency became larger and earthquake often occurred during or after the progress of high-frequency anomaly.There is also certain reflections of the anomaly frequency on earthquakes of M≥5.0.
引文
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2刘善华.华北地区强震前断层形变异常与演化特征[J].大地测量与地球动力学,2003,23(2):15-22.2 Liu Shanhua.Fault deformation anomaly and its evolutionarycharacter before strong earthquake i North China[J].Journalof Geodesy and Geodynamics,2003,23(2):15-22.(inChinese)
3焦青,邱泽华,范国胜.北京地区八宝山-黄庄-高丽营断裂的活动与地震[J].大地测量与地球动力学,2005,25(4):50-54.3 Jiao Qing,Qiu Zehua and Fan Guosheng.Analysis on recenttectonic activity and seismicity of Babaoshan-Huangzhuang-Gaoliying fault in Beijing region[J].Journal of Geodesy andGeodynamics,2005,25(4):50-54.(in Chinese)
4郭良迁,谢觉民.张北6.2级地震的断层形变速率异常[J].地壳形变与地震,2001,21(1):79-84.4 Guo Liangqian and Xie Juemin.Anomaly of concerned faultdeformation rate related to Zhangbei earthquake of 6.2[J].Crustal Deformation and Earthquake,2001,21(1):79-84.(in Chinese)
5薄万举,郭良迁.首都圈断层形变空间信息合成图像[J].地震,2001,3:98-103.5 Buo Wanju and Guo Liangqian.Spatially synthetic informa-tion pattern of fault deformation in the Capital circle area[J].Earthquake,2001,3:98-103.(in Chinese)
6车兆宏,范燕,马牧军.华北地区震前断层异常活动方式[J].地震,2004,2:109-118.6 Che Zhaohong,Fan Yan and Ma Mujun.Pattern of the faultmovement before earthquakes in the North China region[J].Earthquake,20042:109-118.(in Chinese)
7赖锡安,等.中国大陆现今地壳运动[M].北京:地震出版社,2004.7 Lai Xian,et al.Present-day crustal movement in China con-strained[M].Beijing:Seismological Press,2004.(in Chi-nese)
8谢觉民,杨国华,郭良迁.华北地区跨断层垂直形变分区特征及其对块体划分的意义[J].地震地质,2000,22(4):387-394.8 Xie Juemin,Yang Guohua and Guo Liangqian.Regionalcharacters of vertical fault deformation in North China andits implications for tectonic block division[J].Seismologyand Geology,2000,22(4):387-394.(in Chinese)
9薄万举,郭良迁,谢觉民.苏鲁皖断层形变显示的区域地壳活动新特征[J].地震地质,1997,19(2):148-154.9 Bo Wanju,Guo Liangqian and Xie Juemin.New charactericsof regional crustal activites shown by surveying across faultsin the areas of Jiangsu,Shandong and Anhui provinces[J].Seismology and Geology,1997,19(2):148-154.(in Chi-nese)
10马廷著,黄佩玉.京津唐活动断裂带现代运动特征[A].中国地震学会地震地质专业委员会.中国活动断裂[C].北京:地震出版社,1982.10 Ma Tingzhu and Huang Peiyu.The characteristics of recentmovement of the active faults in the Beijing-Tianjing-Tangs-han region[A].Committee on Seimogeology of The Seismo-logical Society of China.The active faults in China[C].Beijing:Seismological Press,1982.(in Chinese)
11薄万举,吴翼麟.信息流合成法及其应用研究[J].地壳形变与地震,1995,15(3):84-88.11 Buo Wanju and Wu Yilin.Researches on method of infor-mation synthesis and its application[J].Crustal Deforma-tion and Earthquake,1995,15(3):84-88.(in Chinese)
12周硕愚.断层形变测量与地震预报[J].地壳形变与地震,1994,14(4):90-97.12 Zhuo Shuoyu.Fault deformation measurement and earth-quake prediction[J].Crustal Deformation and Earth-quake,1994,14(4):90-97.(in Chinese)
13施顺英,等.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):82-87.13 Shi Shunying,et al.Scientific test for erthquake predicitionin Yunnan based on fault-crossing deformation anomaly[J].Journal of Geodesy and Geodynamics,2007,27(5):82-87.(in Chinese)14陆远忠,等.基于GIS的地震分析预报系统[M].成都:成都出版社,2002.
14 Lu Yuanzhong,et al.System based on GIS for earthquakeanalysis and predictin[M].Chengdu:Chengdu Map PublishHouse,2002.(in China)
15马杏垣.中国岩石圈动力学图集[M].北京:中国地图出版社,1989.15 Ma Xingyuan.Lithospheric dynamics atlas of China[M].Beijing:China Cartographic Pubshiling House,1989.(inChinese)
16国家地震局《一九七六年唐山地震》编辑组.一九七六年唐山地震[M].北京:地震出版社,1982.16 Editorial Group of“Tangshan Earthquake in 1976”of StateSeismological Bureau.Tangshan Earthquake in 1976[M].Beijing:Seismological Press,1982.(in Chinese)
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