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| 以震源精确定位结果分析张北地震序列的破裂特征 | |
| 引用本文： | 高景春,刁桂苓,张四昌,蔡华昌,张宏志,赖晓玲,李钦祖,王勤彩,李松林,张彦清,朱振兴. 以震源精确定位结果分析张北地震序列的破裂特征[J]. 地震地质, 2002, 24(1): 81-90. DOI: ISSN:0253-4967.0.2002-01-007 |
| 作者姓名： | 高景春 刁桂苓 张四昌 蔡华昌 张宏志 赖晓玲 李钦祖 王勤彩 李松林 张彦清 朱振兴 |
| 作者单位： | 1. 河北省地震局,石家庄,050021 2. 中国地震局地球物理研究所,北京,100081 3. 中国地震局地球物理勘探中心,郑州,450003 |
| 基金项目： | 国家自然科学基金 (49974 0 0 6 )，河北省自然科学基金 (499348)共同资助 |
| 摘 要： | 利用远场和近场数字地震观测记录 ,重新测定了张北地震序列ML≥ 3级地震的震源位置 ,结合修订后的震源机制、宏观烈度分布资料 ,给出了张北地震序列的破裂特征。地震序列由走向NWW、倾向NNE、倾角 4 4°、长 11.5km的左旋走向滑动的主破裂面 ,2条NNE走向、高倾角、右旋走滑的次要破裂面组合而成。NWW和NNE走向的破裂面共轭展布 ,2条NNE向的破裂面呈右阶斜列 ,3条破裂面先后依次出现。破裂面埋深 1.4～ 7.6km ,在地壳的浅部。研究表明 ,在没有发现活动断裂的“构造稳定区” ,利用精确可靠的强震序列震源位置、震源机制和宏观烈度分布资料 ,从三维空间分析研究强震序列的震源断层 ,是一条可行的途径 |
| 关 键 词： | 张北地震 破裂特征 震源定位 震源机制 宏观烈度 震源断层 |
| 文章编号： | 0253-4967(2002)01-81-10 |
| 修稿时间： | 2000-11-05 |
RUPTURE CHARACTERISTICS OF THE ZHANGBEI EARTHQUAKE SEQUENCE ANALYZED BY EXACT FOCAL LOCATION |
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| GAO Jing-chun ) DIAO Gui-ling ) ZHANG Si-chang ) CAI Hua-chang ) ZHANG Hong-zhi ) LAI Xiao-ling ) LI Qin-zu ) WANG Qin-cai ) LI Song-lin ) ZHANG Yan-qing ) ZHU Zhen-xing ) ) Seismological Bureau of. RUPTURE CHARACTERISTICS OF THE ZHANGBEI EARTHQUAKE SEQUENCE ANALYZED BY EXACT FOCAL LOCATION[J]. Seismology and Geology, 2002, 24(1): 81-90. DOI: ISSN:0253-4967.0.2002-01-007 | |
| Authors: | GAO Jing-chun ) DIAO Gui-ling ) ZHANG Si-chang ) CAI Hua-chang ) ZHANG Hong-zhi ) LAI Xiao-ling ) LI Qin-zu ) WANG Qin-cai ) LI Song-lin ) ZHANG Yan-qing ) ZHU Zhen-xing ) ) Seismological Bureau of |
| Affiliation: | GAO Jing-chun 1) DIAO Gui-ling 1) ZHANG Si-chang 1) CAI Hua-chang 1) ZHANG Hong-zhi 2) LAI Xiao-ling 3) LI Qin-zu 1) WANG Qin-cai 1) LI Song-lin 3) ZHANG Yan-qing 1) ZHU Zhen-xing 1) 1) Seismological Bureau of |
| Abstract: | Based upon the far-field and near-field digital seismic records, the hypocenter locations of M L≥3 earthquakes of the Zhangbei earthquake sequence occurred during January, 1998-March, 1999 have been re-determined by using relative locating method. The results show that the process of the earthquake sequence can be divided into three stages. The first stage occurred in January 1988, which is the stage of the occurrence and adjustment of the main shocks. The seismic activity in this stage occurred mostly |
| Keywords: | Zhangbei earthquake Rupture characteristic Hypocenter location Focal mechanism Macro-intensity Focal rupture |
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