| 华北平原邢台地震活动地区的上地幔结构和地幔低速层 |
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| 引用本文： | 滕吉文,魏斯禹,李金森,赵静娴.华北平原邢台地震活动地区的上地幔结构和地幔低速层[J].地球物理学报,1982,25(1):58-64. |
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| 作者姓名： | 滕吉文 魏斯禹 李金森 赵静娴 |
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| 作者单位： | 1. 中国科学院地球物理研究所;
2. 国家地震局地震地质大队 |
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| 摘 要： | 邢台地震活动地区,地壳底部莫霍界面之下尚有纵波速度为8.1、7.6、7.8和8.1公里/秒的四层介质,它们的下面有速度为7.2-7.4公里/秒的地幔低速层,低速层顶部的深度为83公里左右。 本文所得低速层与世界其他地区所得低速层参数的比较似乎说明:在构造活动地区、火山活动地区和地震活动地区,低速层中的速度值一般均较正常状态下（海洋和大陆地区）的地幔低速层为低,且埋深相对较浅。
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| 关 键 词： | 低速层 邢台地震 华北平原 上地幔结构 莫霍界面 速度分布 反射波 s波 地壳介质 震相 |
| 收稿时间： | 1979-05-31 |
STRUCTURE OF THE UPPER MANTLE AND LOW VELOCITY LAYER OF THE MANTLE UNDER THE HSINGTAI EARTHQUAKE REGION ON THE NORTH CHINA PLAIN |
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| TENG JI-WEN,WEI SHI-YU,LI KIN-SHEN,CHAD ZING-XIAN.STRUCTURE OF THE UPPER MANTLE AND LOW VELOCITY LAYER OF THE MANTLE UNDER THE HSINGTAI EARTHQUAKE REGION ON THE NORTH CHINA PLAIN[J].Chinese Journal of Geophysics,1982,25(1):58-64. |
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| Authors: | TENG JI-WEN WEI SHI-YU LI KIN-SHEN CHAD ZING-XIAN |
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| Affiliation: | 1. Institute of Geophysics, Academia Sinica;
2. Seismotectonic Brigade, State Seismological Bureau |
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| Abstract: | Under the Hsingtai earthquake region of the North China Plain and beneath the Mohorovicic Discontinuity, there are four layers respectively of longitudinal velocities 8.1, 7.6, 7.8 and 8.1 km/sec. Further below, a low velocity layer of velocity 7.2-7.4 kin/sec exists in the mantle, the upper boundary of which lies at a depth of about 83 kilometers.In this paper, comparison of the low velocity layer of the Hsingtai region with that of the other parts of the world seems to show that the low velocity values of the tec-tonically, active regions are usually less than the normal value for regions such as oceans and continents. |
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