| 地震自相似现象初探 |
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| 引用本文： | 李海华,张勇利.地震自相似现象初探[J].内陆地震,1990,4(4):292-300. |
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| 作者姓名： | 李海华 张勇利 |
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| 作者单位： | 海南省地震局 海口
(李海华)，甘肃省地震局 兰州
(张勇利)，宁夏回族自治区地震局 银川
(张文孝)，青海省地震局 西宁
(郭亚平)，青海省地震局 西宁(马文静) |
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| 摘 要： | 依据破裂过程和震源物理参数相似性,给出了自相似震源椭球体三轴之比约为a:b:c=1:0.2:0.2。基于分维理论和方法,讨论了自相似的地震时空分布的分维和强震前的降维现象。由前兆展布范围,大震前区域地震活动特征以及地震空区等可导出近源前兆(红肿)区线性尺度约为震源区的5倍。
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| 关 键 词： | 自相似 分维 降维 震源体 地震 |
A PRELIMINARY STUDY ON SELF - SIMILARITY PHENOMENA OF EARTHQUAKES |
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| Li Haihua.A PRELIMINARY STUDY ON SELF - SIMILARITY PHENOMENA OF EARTHQUAKES[J].Inland Earthquake,1990,4(4):292-300. |
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| Authors: | Li Haihua |
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| Abstract: | The ratio of three main axies for a self-similarity ellipsoid earthquake source a:b:c=1 :0. 2 : 0.2 has been got according to the similarity of rupture process and physical parameters of the source. Based on the fractal theory and method,the reduction of dimension value before strong earthquake occurrence for self-similar earthquake distribution in time and space has been discussed.The result that scale of precursory anomaly area (red-swelling area) is five times larger than that of the source area could be obtained from extension area of precursors and characteristics of regional seismicity before large earthquake and seismic gap.et al. |
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| Keywords: | Self-similarity Fractal dimension Reduction of dimension Source volume Near-source precursory area |
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