短临突发异常的一般特征 在地震预报研究中,人们发现短、临突发异常与长、中趋势异常是两类不同性质的异常,它们在异常时间的长短、空间分布、量值大小、变化特征、种类多寡等方面,都有着明显的差别。短、临突发异常除了时间短、突发性这两个特征外,还应强调下列几点: General characteristics of short-term and sudden anomalies In the study of earthquake prediction, it is found that short and temporary sudden anomalies and long and medium-anomalous trends are two types of anomalies of different nature. They are characterized by the length of anomalous time, spatial distribution, magnitude, Change characteristics, the type of species, etc., there is a clear difference. In addition to the short, sudden burst of these two features, the following points should also be emphasized: