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| 地震时、 空分布均匀度研究探讨 | |
| 引用本文： | 盛菊琴,赵卫明,马禾青,金春华.地震时、 空分布均匀度研究探讨[J].地震,2004,24(2):47-52. |
| 作者姓名： | 盛菊琴 赵卫明 马禾青 金春华 |
| 作者单位： | 1.中国地震局兰州地震研究所, 甘肃 兰州 730000; 2.宁夏回族自治区地震局, 宁夏 银川 750001 |
| 基金项目： | 十五"国家科技攻关项目(2001BA601B01 03 04) |
| 摘 要： | 强震在孕育过程中, 在一定的时空范围内多数伴随大量的地震时空集中活动。 在前人研究的基础上, 提出了含义明确、 适用性好的刻画地震时、 空分布均匀程度的定量参数Ct和Cd。 研究了宁夏及邻区的5个MS≥5.5地震, 以及我国华北的4个MS≥6.0的地震, 发现震前几个月或1年左右, Ct和Cd值有一明显的异常上升过程, 表明震前地震在时间、 空间分布上有明显的集中过程。 |
| 关 键 词： | 地震时间分布 空间分布 均匀度 |
| 文章编号： | 1000-3274(2004)02-0047-06 |
| 修稿时间： | 2003年7月3日 |
Exploration of study method on uniformity degree of earthquake space-time distribution |
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| SHENG Ju-qin,ZHAO Wei-ming,MA He-qing,JIN Chun-hua.Exploration of study method on uniformity degree of earthquake space-time distribution[J].Earthquake,2004,24(2):47-52. | |
| Authors: | SHENG Ju-qin ZHAO Wei-ming MA He-qing JIN Chun-hua |
| Institution: | 1. Lanzhou Institute of Seismology, CSB, Lanzhou 730000; 2. Seismological Bureau of Ningxia Hui Autonomous Region, Yinchuan 750001, China |
| Abstract: | During the seismogenic process of strong earthquakes the space-time centralized activity in a definite space-time range is always accompanied. Two quantitive parameters with clear meaning and fine applicability to describe the earthquake space-time uniformity degree have been given on the basis of previous works. Through the study on 5 earthquakes with MS≥5.5 occurred in Ningxia and its neighboring region and 4 earthquakes with MS≥6.0 occurred in North china, it is showed that there exists obviously abnormal rise process of Ct and Cd value in couple mouths or around one year before main shocks, indicating that there exists obviously centralized process in earthquake space-time distribution before strong shocks. |
| Keywords: | Earthquake time distribution Space distribution Uniformity degree |
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