论文部分内容阅读
根据地震预报的需要,我们研制了一种高频地震记录仪。采用熏烟或墨水记录。仪器频带2～120Hz(-3db);总功耗约0.4瓦,重量24公斤。滚筒速度分二档:240mm/分、360mm/分(或120mm/分,240mm/分),在240mm/分速度时,仪器可连续记录12小时。 本仪器在云南省剑川、云龙和鹤庆等地,以及贵州六枝地区做过流动观测,并在昆明、昭通、易门和海口做过半年至一年以上的长期试用性观测。流动观测期间,记到不少零级以下的地震。有的地震卓越频率大于40周,震级<-1.7;根据估算,在频率100Hz时,可以观测到-3级左右的地震。长期流动和固定观测证明了仪器的稳定性、可靠性都是良好的。 试验观测表明:这种仪器对监测极微震活动、地声观测和研究断层的现代活动性都是一种有用的仪器。因为采取了可见记录,观测结果更直观,维修管理方便,适于流动观测。如果与慢速磁带机相结合,可使高频地震观测更为有效和完善。
According to the needs of earthquake prediction, we developed a high-frequency seismic recorder. Adopt fumigation or ink records. Instrument band 2 ~ 120Hz (-3db); total power consumption of about 0.4 watts, weight 24 kg. Roller speed in second gear: 240mm / min, 360mm / min (or 120mm / min, 240mm / min), at 240mm / min speed, the instrument can continuously record 12 hours. The instrument in Jianchuan, Yunnan Yunlong and Heqing and other places, as well as the flow of observation done in Guizhou six areas, and in Kunming, Zhaotong, Yi Men and Haikou for more than six months to a long trial of more than a year of observation. During the flow observation, it was noted that many earthquakes below zero level. Some earthquakes have an excellent frequency of more than 40 weeks and a magnitude of <-1.7; according to estimates, an earthquake of magnitude -3 can be observed at a frequency of 100 Hz. Long-term flow and fixed observation of the instrument proved the stability, reliability are good. Experimental observations show that this instrument is a useful instrument for monitoring extremely microseismic activity, geoacoustic observations and the study of the modern mobility of faults. Because of the visible record, the observation results are more intuitive, maintenance and management is convenient, suitable for mobile observation. Combined with a slow tape drive, high-frequency seismic observations are more efficient and complete.