张北6.2级地震地裂缝特征及其研究意义  

The feature and researching significance of the ground fissures formed by Zhangbei 6.2 earthquake

作　　者：蔡华昌[1] 张景余 刘荣利 刁桂苓[1] 黄万发[3] 何春贵[1] 张启富 彭远黔[1] 杨家亮[1] 刁建新[1] 

机构地区：[1]河北省地震局,河北,石家庄,050021 [2]河北省承德市地震局,河北,承德,076000 [3]张家口地震中心台,河北,张家口,075000 [4]河北省张家口市地震局,河北,张家口,075000

出　　处：《华北地震科学》2001年第4期47-53,共7页North China Earthquake Sciences

基　　金：河北省自然科学基金项目 ( 4 9934 8)

摘　　要：张北 6 .2级地震现场调查结果表明 ,这次地震形成了大量的非构造地裂缝 ,它们主要分布在极震区和 度区。地裂缝的优势方位为 NNE和 NWW向 ,与 度等震线双向展布基本一致。利用地裂缝的空间分布特征和统计的优势方位 ,探讨了地裂缝与烈度分区和发震构造的关系。The investigation on the site of Zhangbei earthquake shows that this event formed a lot of ground fissures,which distribute mainly in the zone of Ⅷ intensity and Ⅶ intensity.The preponderant directions of the fissures are NNE and NWW,which is consistent with the two-direction distribution of isoseisms.Based on the spatial distribution feature of the fissures and the statistical preponderant directions,the relation of ground fissure with intensity zoning and seismic structure is discussed.

关 键 词：张北地震 地裂缝 发震构造 极震区 空间分布 

分 类 号：P315.2[天文地球—地震学]