| 五倍强震仪 |
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| 引用本文： | 叶林才,周光宇,曹璞安. 五倍强震仪[J]. 地球物理学报, 1978, 21(4): 332-339 |
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| 作者姓名： | 叶林才 周光宇 曹璞安 |
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| 作者单位： | 1. 国家地震局地球物理研究所;2. 国家地震局地震仪器厂 |
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| 摘 要： | 五倍强震仪是记录三分向地动位移的仪器,直接机械杠杆放大,可见记录,触发但不丢地震初动,能保留触发前20秒内的波形. 仪器参数是:T5.00秒,D0.550,V5.00.零点漂移小（<0.1毫米/℃）,频带较宽,可记录5级以上的地方震和近震. 两年来,八次中强震记录表明仪器性能良好.可供台站仪器配套和现场记录强余震用.
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| 关 键 词： | 强震仪 水平摆 垂直摆 固有周期 国家地震局 小摆锤 面波 折合摆长 龙陵 阻尼 |
| 收稿时间： | 1977-07-21 |
A QUINTUPLE STRONG MOTION SEISMOLOGRAPH |
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| YE LIN-CAI,ZHOU GUANG-YU,CAO PU-AN. A QUINTUPLE STRONG MOTION SEISMOLOGRAPH[J]. Chinese Journal of Geophysics, 1978, 21(4): 332-339 |
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| Authors: | YE LIN-CAI ZHOU GUANG-YU CAO PU-AN |
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| Affiliation: | 1. Institute of geophysics, National Seismological Bureau;2. The seismolograph factory, National Seismological Bureau |
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| Abstract: | The quintuple strong motion seismograph may record three-component ground displacements with mechanical lever amplification, visible recording and triggering without the loss of the first motion of the earthquake waves, preserving wave forms 20 seconds before triggering.The parameters of the instrument are: T 5.00 sec, D 0.550, V 5.00. Its zero point drift is smaller （< 0.1mm/℃）, frequency band wider. It may record local and near earthquakes of magnitude greater than five.During the past two years, the instrument recorded eight moderate earthquakes, rather satisfactorily. |
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