张北6.2级地震地裂缝特征及其研究意义
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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.
引文
[1] 车用太,刘五洲,等.张北—尚义地震典型地段的地表破坏[J].地震地质,1998,(2).
    [2] 蔡华昌,李孟銮,刁桂苓,等.1998张北地震[M].北京:地震出版社,1999,29~47.

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