THE FEATURE AND RESEARCHING SIGNIFICANCE OF THE GROUND FISSURES FORMED BY ZHANGBEI 6.2 EARTHQUAKE
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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Ⅶ度区。地裂缝的优势方位为NNE和NWW向,与Ⅷ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。Abstract: 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.
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Key words:
- Zhangbei earthquake /
- ground fissure /
- seismic structure
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[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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