不同类型地震断层上的固体潮汐库仑破裂应力特征

计算和研究了不同类型地震断层上的潮汐库仑破裂应力及其随纬度变化特征;通过对全球20395个地震断层发震时潮汐库仑破裂应力的计算,研究了受到潮汐库仑破裂应力促滑作用的不同类型地震断层的纬度分布特征.结果表明,断层上潮汐库仑破裂应力的性质和特征与断层的类型、走向和位置密切相关,同一时间段内不同类型地震断层上的潮汐库仑破裂应...

The features of tidal Coulomb failure stresses on various kinds of seismic fault

The tidal Coulomb failure stresses (TCFS) on various kinds of seismic faults are calculated and their latitudinal characters are studied. We compute tidal Coulomb failure stresses at shock-occurring times on 20395 earthquake faults and analyze the latitudinal distribution of various types of nature seismic faults that are slip-encouraged by TCFS. The results show that the features of tidal failure stress are closely correlated with fault type, fault strike and fault location. The TCFS variation properties are different on various kinds of fault during the same period. And there are obvious differences in amplitudes and signs of TCFS on same kind fault at different latitudinal regions. For normal faults, the tidal slip-encouraged effects are outstanding in low and middle latitudinal region; for thrust faults, the tidal slip-encouraged effects are outstanding in middle and high latitudinal region; for strike-slip fault, the tidal slip-encouraged effects are reducing with latitude increasing.