随着预报工作的深入发展,对现行观测手段的评价已提到日程上来了。特别是在综合预报中,计算机技术的引入,专家系统的建立,已迫使我们刘地ρs 异常的预报可靠程度进行定量评定,确定在该系统中应占有的位置,从概率的角度给定手段判据在综合预报中的预报价值和意义。四川是个多震的省分,有关异常的震例总结亦屡见不鲜,在目前有关异常对应地震的“ With the further development of the forecasting work, the evaluation of the current observation means that the agenda has come up. Especially in comprehensive forecasting, the introduction of computer technology and the establishment of expert system have forced us to quantitatively assess the reliability of prediction of ρs anomalies in the Liu area, determine the position that should be occupied in the system, and give the means of judgment from the perspective of probability According to the forecast value and significance in comprehensive forecasting. Sichuan is a multi-earthquake provinces, the abnormal earthquake cases are also common, in the current earthquake corresponding to the abnormal "