【摘要】 跟踪分析了江苏省“九五”期间建设的5套钻孔体应变仪观测资料的完整性、稳定性及观测精度等,利用观测资料分钟值,对2001~2004年发生在台湾地区的强震记录特征进行了研究,结果表明:1)江苏5套体应变仪的观测精度波动较大,受仪器故障、降雨雷击、气压等因素的干扰,观测资料的完整性、稳定性欠佳,各台都存在着不明原因的突跳现象;2)大部分体应变分钟值能清晰地记录到台湾地区6级以上地震,其中南通体应变仪的灵敏性最好;震级越大形变波衰减时间越长,波幅也越大,波形更似尖锐脉冲;3)徐州、溧阳、南通3台以应变仪在部分台湾地震震前十几分钟至数小时,能记录到显著的震前应力异常变化,如果这种变化是震前应力改变的反映,则对于提高地震预警能力和临震预报能力具有重要意义。更多还原

【Abstract】 We analyzed the integrality,stability and precision of observation of 5 bore-hole body strain metres in Jiangsu province in the period of “The Nineth Five-year-plan”,and studied the characteristics of Taiwan strong earthquake recorded by the five metres from 2001 to 2004 by use of the data minute.The results show as follows:1)The observation precision of 5 bore-hole body srain metres is not stable,the integrality and stability are affected by apparatus trouble,rain,thunder and atmospheric pressure.2)Minute value of most stations reflects clearly the %M%s>6 earthquakes of Taiwan,body trainmetre at Natong station is most sensitive among them.The stronger the vent is,the larger the wave amplitude is and the more the wave shape looks like a spike.3)All of the metres at Xuzhou,Liyang and Nantong stations record clearly strain anomaly before Taiwan earthquake from dozen-minute to several hours.If the change is a can sure response to the stress change before earthquake it will has the very important significance for improving the abilities of earthquake beforehand alarm and impending prediction.更多还原