强震动观测仪器面临的机遇和挑战

Opportunities and Challenges of Strong Motion Observation Instruments

本文介绍了国内外强震仪、力平衡加速度计、烈度计、MEMS加速度仪等强震动观测仪器的发展历史与现状,概述了强震动记录中典型异常波形产生的原因和力平衡加速度计的仪器响应误差及校正,建议了解决强震仪器缺陷的措施,分析了强震仪在强震动观测发展中面临的机遇和挑战。研究结果如下:(1)进行强震动记录异常波形的研究是有针对性改进现有强震仪存在问题的很好途径;(2)早期数字强震仪(力平衡加速度计频带范围0至30Hz)获取的强震动记录应进行仪器校正;(3)应跟踪强震动观测新方法和相关领域新技术,发展MEMS加速度仪和光纤加速度仪等新型仪器。

The development history of strong motion instruments, force-balance accelerometers, seismic intensity meter and MEMS accelerometers is described, and typical abnormal waveforms in strong motion records and instrument response errors correction for force-balance accelerometers are analyzed in brief, then challenges and opportunities of strong motion instruments are studied. The measures to solve the defects of strong motion instruments are suggested. The results are showed as following： （1） it is a good way to promote the development of strong motion instruments by studying abnormal waveforms in strong motion records; （2） for force-balance accelerometers with the band range from 0 to 30Hz, strong motion records obtained by early digital strong motion instruments should be corrected by instrument response; （3） new methods and technology in strong motion observation should be tracked, and new instruments （MEMS accelerometers and Opticalfibre accelerometers） should be developed to meet the demands of our country.