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| 南北地震带南北段地震迁移现象 | |
| 引用本文： | 杨兴悦,杨立明,陈继峰,张辉,王燕,李冬梅.南北地震带南北段地震迁移现象[J].地震地磁观测与研究,2012,33(5):7-12. |
| 作者姓名： | 杨兴悦 杨立明 陈继峰 张辉 王燕 李冬梅 |
| 作者单位： | 1. 中国甘肃730000,中国地震局兰州地震研究所;中国甘肃741308,武山地震台 2. 中国甘肃730000,中国地震局兰州地震研究所 3. 中国甘肃741020,天水中心地震台 4. 中国济南250014,山东省地震局 |
| 基金项目： | 中国地震局"三结合"基金项目 |
| 摘 要： | 对1990年以来南北地震带南段发生的Ms5．0以上地震和北段发生的慨4．5以上地震的迁移现象进行分析。结果表明，在南北地震带南、北段发生的中强地震具有呼应现象，且呈现一定规律，即大致以30°N线为基线对称分布。通过对震源机制的对比分析，发现南段和北段的地震类型不一致，可能与不同的地质构造和作用力有关。 |
| 关 键 词： | 南北地震带 地震迁移 地震呼应 震源机制 |
Discussion on earthquake migration phenomenon of northern and southern zone in north-south seismic belt |
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| Yang Xingyue , Yang Liming , Chen Jifeng , Zhang Hui , Wang Yan , Li Dongmei.Discussion on earthquake migration phenomenon of northern and southern zone in north-south seismic belt[J].Seismological and Geomagnetic Observation and Research,2012,33(5):7-12. | |
| Authors: | Yang Xingyue Yang Liming Chen Jifeng Zhang Hui Wang Yan Li Dongmei |
| Institution: | 1) Lanzhou Institute of Seismology, China Earthquake Adminitration, Gansu Province 730000, China ;2) Wushan Seismic Station, Gansu Province 741308, China; 3) Tianshui Central Seismic Station, Gansu Province 741020, China ;4) Earthquake Administration of Shandong Province, Jinan 250014, China) |
| Abstract: | The migration phenomenon of the earthquakes（Ms≥5.0） happened at the southern zone and the earthquakes（Ms≥4.5） happened at the northern in north-south seismic belt since 1990 is analyzed. The results show that the moderate-earthquakes have echo phenomenon of northern and southern zone in north-south seismic. This kind of echo phenomenon also presents certain laws. The earthquakes symmetricly distributed about latitude 30°N as a baseline at the southern and northern zone. In this article, further discussion about earthquake type and seismogenic law is presented. Through the contrastive analysis of the focal mechanism, it is found that the northern and southern earthquake type is not consistent, which maybe related with the different geological structure and the force. |
| Keywords: | north-south seismic belt earthquake migration earthquake echo focal mechanism |
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