CAJ | 학술논문

采用Sato单次散射模型,利用大柴旦台数字地震资料,研究了大柴旦震群序列尾波Qc值在流逝时间窗长60～90 s时间内的变化特征,计算频率从3 Hz至18 Hz,得到Qc值随频率的变化关系：Qc（f）=（72±19.9）f0.93±0.08。计算结果反映出大柴旦地震余震序列的尾波Qc值较低,说明大柴旦震源区属于构造运动较为活跃的地区,这与大柴旦地质结构特征相符。
채용Sato단차산사모형,이용대시단태수자지진자료,연구료대시단진군서렬미파Qc치재류서시간창장60～90 s시간내적변화특정,계산빈솔종3 Hz지18 Hz,득도Qc치수빈솔적변화관계：Qc（f）=（72±19.9）f0.93±0.08。계산결과반영출대시단지진여진서렬적미파Qc치교저,설명대시단진원구속우구조운동교위활약적지구,저여대시단지질결구특정상부。
By means of the single scatter mode（Sato）,the variation characteristics of coda Qc value of Dachaidan earthquake swarm sequence,recorded by Dachaidan Seismic Station,were analyzed in the S-wave lapse time ranging from 60 to 90 seconds;and the coda wave Q values were calculated in the frequency from 3 Hz to 18 Hz.We obtained the relationship between coda wave value and frequency,which is Qc（f）=72±21.6·f0.93±0.08.The calculation results reflect that the coda Qc value of Dachaidan earthquake aftershock sequence was in a low level.This means Dachaidan seismic zone belongs to the tectonic active area,in consistent with the geological structure features of Dachaidan area.