【摘要】 根据Gutenberg-Richter公式对青海省东部及邻区(N34°—39.5°,E96°—104°)地震频次和震级的统计关系进行了研究。结果表明:中强地震前震中附近一定范围内中小地震的拟合相关系数有明显的下降现象。对研究区的地震进行统计计算,提取出了可信度较高的中期预报指标,预报评分为0.631。更多还原

【Abstract】 Useing the G-R formula,the statistical relation of earthquake frequency and magnitude in east of Qinghai province and its adjacent region(N34°—39.5°,E96°—104°) is researched.The result shows that the earthquake fitting correlation coefficient of middle and small earthquakes descended obviously before strong shock in certain range near the epicents.Through calculation a reliable medium-term earthquake prediction index for research area is obtained,with higher R value 0.631.更多还原