摘要
采用b值时间扫描及地震复发周期等统计方法,对乌鲁木齐至沙湾一带1977年以来的地震观测资料进行了计算分析。初步结果表明:研究区域内5.0级以上中强地震发生前,b值均出现不同程度的负异常。利用地震复发周期计算公式和未来地震震级定量计算公式,得到区内不同震级区间的平均复发周期及今后2年左右可能发生的最大地震震级。
The seismological observation data obtained since 1977 in the area from Urumqi to Shawan were calculated and analyzed with the methods of 6 value of earthquake recurrence period and time scanning. The result shows that: (1) There were negative anomalies of 6 value in different degree before medium and strong earthquake of Ms>5. 0 in the area; (2) Average earthquake recurrence period in different magnitude range in the area were obtained by using the equation for earthquake recurrence period, (3) The possible magnitude of the quake which would occur in coming 2 years was obtained by using calculation equation for magnitude of coming earthquake.
出处
《内陆地震》
1992年第1期99-105,共7页
Inland Earthquake
关键词
地震活动性
地震
震级
乌鲁木齐
b value Earthquake recurrence period The maximum magnitude of earthquake in coming year
