| 张家口-怀柔地区的微震震源参数 |
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| 引用本文： | 郑治真,齐国英,郭亚平. 张家口-怀柔地区的微震震源参数[J]. 地球物理学报, 1976, 19(3): 234-238 |
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| 作者姓名： | 郑治真 齐国英 郭亚平 |
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| 作者单位： | 1. 中国科学院地球物理研究所;2. 中国科学技术大学工农兵学员 |
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| 摘 要： | 本文是前两项工作的继续,采用微震仪记录图测定了张家口-怀柔地区微震（ML=2.0-3.0）的震源参数,结果表明,拐角频率在2-5赫兹范围,地震矩为（0.5-20）×1019达因·厘米数量级,应力降为十分之几巴到几巴.
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| 关 键 词： | 震源参数 地震趋势 应力降 拐角频率 记录图 地震矩 微震仪 张家口 地球物理学 地区 |
THE FOCAL PARAMETERS OF MICROEARTHQUAKES IN THE ZHANGJIAKOU-HUAIROU REGION |
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| ZHENG ZHI-ZHEN,QI GUO-YING,GUO YA-PING. THE FOCAL PARAMETERS OF MICROEARTHQUAKES IN THE ZHANGJIAKOU-HUAIROU REGION[J]. Chinese Journal of Geophysics, 1976, 19(3): 234-238 |
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| Authors: | ZHENG ZHI-ZHEN QI GUO-YING GUO YA-PING |
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| Affiliation: | 1. Institute of Geophysics, Academia Sinica;2. Worker-Peasant-Soldier Student, University of Science and Technology of China |
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| Abstract: | The present paper is the continuation of two previous ones. The focal para-meters of microearthquakes （ML = 2.0-3.0） recorded in the Zhangjiakou-Huairou re-gion have been determined from seismograms. The results are: corner frequenciesrange from 2-5 Hz; seismic moment varies between （0.5-20） × 1019 dyne·cm;stress drops are estimated to be less than one to few bars. |
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