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计算即将发生地震的强度,在地震预报问题中具有重要意义.现在,这一计算是按震前效应(即地震前兆)出现的数量和面积进行的.比如,根据水文地球动力学前兆,建立开始出现前兆的震中距Δ与孕育地震的震级(M)间的经验关系曲线.无疑,类似的关系在别的前兆中也会存在.通过取经验数据的平均值,建立Δ与M关系的阈值曲线,并将其看作只是这些值间的最可能的关系.在这一意义上,当M定得到高或过低,都有可能偏离曲线.Мовахов.等于1979年研究了M定得过高的两种明显情况.据推测:M定得过高,是由于引起地震典型前兆出现的弹性应力的松弛具有蠕变(即塑性形变)性质所造成的.
Calculating the intensity of an imminent earthquake is of great importance in the prediction of earthquakes, and is now based on the number and area of occurrences of pre-earthquake effects (ie, earthquake precursors), for example, based on precursors to hydrogeometries An empirical relationship between epicentral distance Δ and magnitude of inoculated earthquake (M) undoubtedly exists in other precursors.A threshold curve of the relationship between Δ and M is established by averaging the empirical data , And treat it as just the most probable relationship between these values. In this sense, it is possible to deviate from the curve when M is set high or low. M овахов. Equivalent to the 1979 study of M too high Two obvious cases are presumed: M is set too high due to creep (ie, plastic deformation) properties of the relaxation of the elastic stresses that cause typical earthquake precursors.